VAX 9440
The VCF museum took delivery of a VAX 9440 today. It arrived in two 28-foot trailers. Here's our forklift driver beginning to unload the first truck: https://drive.google.com/file/d/1E-Q5xrsYXyjrZEZh92xIBhlStvvNUcRV/view?usp=sharing Here's a teaser picture of the main cabinet: https://drive.google.com/file/d/1bEpSMzBEeOvuDnzPQ9Npc7iYmDhjZq8c/view?usp=sharing The full system is 30-40 feet long when it's all set up! It is in pristine condition and was in service at a defense contractor until a couple of months ago. Rumor has it that we arranged for another one to land in Dave McGuire's Large Scale Systems Museum collection, and a third to be with Bob Roswell's System Source collection. :) Perhaps they'll post updates too!
Re: VAX 9440
Hi Evan, Beautiful catch! Congrats to everyone. Paul On Thu, Nov 8, 2018 at 12:09 AM Evan Koblentz via cctalk < cctalk@classiccmp.org> wrote: > The VCF museum took delivery of a VAX 9440 today. > > It arrived in two 28-foot trailers. Here's our forklift driver beginning > to unload the first truck: > > > https://drive.google.com/file/d/1E-Q5xrsYXyjrZEZh92xIBhlStvvNUcRV/view?usp=sharing > > Here's a teaser picture of the main cabinet: > > > https://drive.google.com/file/d/1bEpSMzBEeOvuDnzPQ9Npc7iYmDhjZq8c/view?usp=sharing > > The full system is 30-40 feet long when it's all set up! It is in > pristine condition and was in service at a defense contractor until a > couple of months ago. > > Rumor has it that we arranged for another one to land in Dave McGuire's > Large Scale Systems Museum collection, and a third to be with Bob > Roswell's System Source collection. :) Perhaps they'll post updates too! >
Re: VAX 9440
Outstanding, glad to hear these were saved. Zane > On Nov 8, 2018, at 1:09 AM, Paul Anderson via cctalk > wrote: > > Hi Evan, > > Beautiful catch! Congrats to everyone. > > Paul > > On Thu, Nov 8, 2018 at 12:09 AM Evan Koblentz via cctalk < > cctalk@classiccmp.org> wrote: > >> The VCF museum took delivery of a VAX 9440 today. >> >> It arrived in two 28-foot trailers. Here's our forklift driver beginning >> to unload the first truck: >> >> >> https://drive.google.com/file/d/1E-Q5xrsYXyjrZEZh92xIBhlStvvNUcRV/view?usp=sharing >> >> Here's a teaser picture of the main cabinet: >> >> >> https://drive.google.com/file/d/1bEpSMzBEeOvuDnzPQ9Npc7iYmDhjZq8c/view?usp=sharing >> >> The full system is 30-40 feet long when it's all set up! It is in >> pristine condition and was in service at a defense contractor until a >> couple of months ago. >> >> Rumor has it that we arranged for another one to land in Dave McGuire's >> Large Scale Systems Museum collection, and a third to be with Bob >> Roswell's System Source collection. :) Perhaps they'll post updates too! >>
Re: VAX 9440
That is a behemoth!! Did you ger that huge powerforming thingy that goes with it? Are you crazy enough to atempt a power-up? /P On Wed, Nov 07, 2018 at 09:55:07PM -0500, Evan Koblentz via cctalk wrote: > The VCF museum took delivery of a VAX 9440 today. > > It arrived in two 28-foot trailers. Here's our forklift driver > beginning to unload the first truck: > > https://drive.google.com/file/d/1E-Q5xrsYXyjrZEZh92xIBhlStvvNUcRV/view?usp=sharing > > Here's a teaser picture of the main cabinet: > > https://drive.google.com/file/d/1bEpSMzBEeOvuDnzPQ9Npc7iYmDhjZq8c/view?usp=sharing > > The full system is 30-40 feet long when it's all set up! It is in > pristine condition and was in service at a defense contractor until > a couple of months ago. > > Rumor has it that we arranged for another one to land in Dave > McGuire's Large Scale Systems Museum collection, and a third to be > with Bob Roswell's System Source collection. :) Perhaps they'll > post updates too!
Re: VAX 9440
Evan said it was in service until a couple of months ago, so it should power up OK, if it could all be electrically and mechanically stitched back together carefully. The question is probably, could they afford the power bill? We have a bunch of Crays and CDCs at the Computer History Museum, and if they were operational, we'd probably have to take up a special very-large-hat-passing collection just to pay the power bill for the multiple,- multi-ton refrigeration units (at least one was about a seven-ton unit, IIRC)! Then, there's the problem of replacement parts for when, not if, things fail, not to mention the labor expertise and availability. It's one thing to replace discrete transistors in our IBM 1401, but, it's quite another to desolder and yank various little black rectangles off extremely dense circuit boards without destroying anything else ... and then solder in a replacement, if you can find one not already firmly attached to another board with another kind of failure. That assumes that problems can even be isolated, although at least more modern systems tend to have self-diagnostic capabilities, at least above a certain level of functionality, or lack thereof. On Sat, Nov 10, 2018 at 3:26 AM Pontus Pihlgren via cctalk < cctalk@classiccmp.org> wrote: > That is a behemoth!! > > Did you ger that huge powerforming thingy that goes > with it? > > Are you crazy enough to atempt a power-up? > > /P > > On Wed, Nov 07, 2018 at 09:55:07PM -0500, Evan Koblentz via cctalk wrote: > > The VCF museum took delivery of a VAX 9440 today. > > > > It arrived in two 28-foot trailers. Here's our forklift driver > > beginning to unload the first truck: > > > > > https://drive.google.com/file/d/1E-Q5xrsYXyjrZEZh92xIBhlStvvNUcRV/view?usp=sharing > > > > Here's a teaser picture of the main cabinet: > > > > > https://drive.google.com/file/d/1bEpSMzBEeOvuDnzPQ9Npc7iYmDhjZq8c/view?usp=sharing > > > > The full system is 30-40 feet long when it's all set up! It is in > > pristine condition and was in service at a defense contractor until > > a couple of months ago. > > > > Rumor has it that we arranged for another one to land in Dave > > McGuire's Large Scale Systems Museum collection, and a third to be > > with Bob Roswell's System Source collection. :) Perhaps they'll > > post updates too! >
Re: VAX 9440
LCM has successfully restored and is running multiple large vintage systems. Not easy, but doable. Lee C. On Sat, Nov 10, 2018 at 7:55 AM Jim Manley via cctalk wrote: > Evan said it was in service until a couple of months ago, so it should > power up OK, if it could all be electrically and mechanically stitched back > together carefully. The question is probably, could they afford the power > bill? We have a bunch of Crays and CDCs at the Computer History Museum, > and if they were operational, we'd probably have to take up a special > very-large-hat-passing collection just to pay the power bill for the > multiple,- multi-ton refrigeration units (at least one was about a > seven-ton unit, IIRC)! Then, there's the problem of replacement parts for > when, not if, things fail, not to mention the labor expertise and > availability. It's one thing to replace discrete transistors in our IBM > 1401, but, it's quite another to desolder and yank various little black > rectangles off extremely dense circuit boards without destroying anything > else ... and then solder in a replacement, if you can find one not already > firmly attached to another board with another kind of failure. That > assumes that problems can even be isolated, although at least more modern > systems tend to have self-diagnostic capabilities, at least above a certain > level of functionality, or lack thereof. > > On Sat, Nov 10, 2018 at 3:26 AM Pontus Pihlgren via cctalk < > cctalk@classiccmp.org> wrote: > > > That is a behemoth!! > > > > Did you ger that huge powerforming thingy that goes > > with it? > > > > Are you crazy enough to atempt a power-up? > > > > /P > > > > On Wed, Nov 07, 2018 at 09:55:07PM -0500, Evan Koblentz via cctalk wrote: > > > The VCF museum took delivery of a VAX 9440 today. > > > > > > It arrived in two 28-foot trailers. Here's our forklift driver > > > beginning to unload the first truck: > > > > > > > > > https://drive.google.com/file/d/1E-Q5xrsYXyjrZEZh92xIBhlStvvNUcRV/view?usp=sharing > > > > > > Here's a teaser picture of the main cabinet: > > > > > > > > > https://drive.google.com/file/d/1bEpSMzBEeOvuDnzPQ9Npc7iYmDhjZq8c/view?usp=sharing > > > > > > The full system is 30-40 feet long when it's all set up! It is in > > > pristine condition and was in service at a defense contractor until > > > a couple of months ago. > > > > > > Rumor has it that we arranged for another one to land in Dave > > > McGuire's Large Scale Systems Museum collection, and a third to be > > > with Bob Roswell's System Source collection. :) Perhaps they'll > > > post updates too! > > > -- Lee Courtney +1-650-704-3934 cell
RE: VAX 9440
Even LCM has had issues. For example, with IBM 43xx boxes. I seem to remember their first box died with memory issues and the second had PSU issues. Not sure if the PSU is fixed. In the UK TNMOC have an ICL 2900 and that is somewhat temperamental and uses a disk drive emulator. They have all the ICL fiche http://www.tnmoc.org/special-projects/icl-2966 CHM keep the IBM1401 working because they have two and have plenty of spares. Large systems always needed a lot of TLC to keep them running When in production older systems had an on-site engineer. Honeywell L66 systems also came with an automated board tester that was used to diagnose chip level faults I know the DEC systems are more modern and so should be more stable, but don't underestimate the work required. Dave > -Original Message- > From: cctalk On Behalf Of Lee Courtney via > cctalk > Sent: 10 November 2018 18:25 > To: General Discussion: On-Topic and Off-Topic Posts > > Subject: Re: VAX 9440 > > LCM has successfully restored and is running multiple large vintage systems. > Not easy, but doable. > > Lee C. > > On Sat, Nov 10, 2018 at 7:55 AM Jim Manley via cctalk > > wrote: > > > Evan said it was in service until a couple of months ago, so it should > > power up OK, if it could all be electrically and mechanically stitched > > back together carefully. The question is probably, could they afford > > the power bill? We have a bunch of Crays and CDCs at the Computer > > History Museum, and if they were operational, we'd probably have to > > take up a special very-large-hat-passing collection just to pay the > > power bill for the > > multiple,- multi-ton refrigeration units (at least one was about a > > seven-ton unit, IIRC)! Then, there's the problem of replacement parts > > for when, not if, things fail, not to mention the labor expertise and > > availability. It's one thing to replace discrete transistors in our > > IBM 1401, but, it's quite another to desolder and yank various little > > black rectangles off extremely dense circuit boards without destroying > > anything else ... and then solder in a replacement, if you can find > > one not already firmly attached to another board with another kind of > > failure. That assumes that problems can even be isolated, although at > > least more modern systems tend to have self-diagnostic capabilities, > > at least above a certain level of functionality, or lack thereof. > > > > On Sat, Nov 10, 2018 at 3:26 AM Pontus Pihlgren via cctalk < > > cctalk@classiccmp.org> wrote: > > > > > That is a behemoth!! > > > > > > Did you ger that huge powerforming thingy that goes with it? > > > > > > Are you crazy enough to atempt a power-up? > > > > > > /P > > > > > > On Wed, Nov 07, 2018 at 09:55:07PM -0500, Evan Koblentz via cctalk > wrote: > > > > The VCF museum took delivery of a VAX 9440 today. > > > > > > > > It arrived in two 28-foot trailers. Here's our forklift driver > > > > beginning to unload the first truck: > > > > > > > > > > > > > https://drive.google.com/file/d/1E- > Q5xrsYXyjrZEZh92xIBhlStvvNUcRV/view > > ?usp=sharing > > > > > > > > Here's a teaser picture of the main cabinet: > > > > > > > > > > > > > > https://drive.google.com/file/d/1bEpSMzBEeOvuDnzPQ9Npc7iYmDhjZq8c/vi > ew > > ?usp=sharing > > > > > > > > The full system is 30-40 feet long when it's all set up! It is in > > > > pristine condition and was in service at a defense contractor > > > > until a couple of months ago. > > > > > > > > Rumor has it that we arranged for another one to land in Dave > > > > McGuire's Large Scale Systems Museum collection, and a third to be > > > > with Bob Roswell's System Source collection. :) Perhaps they'll > > > > post updates too! > > > > > > > > -- > Lee Courtney > +1-650-704-3934 cell
Re: VAX 9440
On Sat, Nov 10, 2018 at 8:55 AM Jim Manley via cctalk wrote: > It's one thing to replace discrete transistors in our IBM > 1401, but, it's quite another to desolder and yank various little black > rectangles off extremely dense circuit boards without destroying anything > else ... and then solder in a replacement, Actually that's just as easy as the discrete transistors. You just need a vacuum desoldering station. I use a Hakko 472D-01, which is great, but unfortunately discontinued. Hakko's replacement, the FR410-03, is even better, but unfortunately is twice as expensive (around $950). Some people are satisfied with the handheld vacuum desoldering irons, like the Hakko 808 (now replaced by Hakko FR-301). They're OK for some small jobs, but the handpiece is bulky and heavy, so it's difficult if you have a lot of desoldering to do, or the density is high so you need careful positioning. The pencil-style handpiece of the 472D-01 or FR410-03 is smaller and much lighter. There are cheap no-name Chinese desoldering stations to be found online. I haven't tried them, but I've generally been dissatisfied with Chinese no-name soldering stations. if you can find one not already > firmly attached to another board with another kind of failure. > Actually that's ideal, because parting out a non-working board isn't destroying anything useful, and a vacuum desoldering station allows the ICs to be removed without damaging them. However, for rare parts it's more common to not have any other board with that part, working or otherwise.
Re: VAX 9440
Some people are satisfied with the handheld vacuum desoldering irons, like the Hakko 808 (now replaced by Hakko FR-301). They're OK for some small I love my 808. Have used it heavily to re-cap arcade monitor chassis (15+) and all kinds of other circuit boards. Of course it doesn't work well when the component lead is super tight to the plate through hole, but that is an issue for wick as well. Friend swears by Pace stations. Recently picked up some Chinese soldering tweezers to aid in SMD capcitor replacement. So far not in love with them. Of course, all the SMD caps I want to remove have leaked electrolyte and the solder doesn't melt right. Hot air setup is the next thing.
Re: VAX 9440
plus one for the hakko 808. Love it! Never leave home without it! From: cctalk on behalf of Ethan via cctalk Sent: Monday, November 12, 2018 9:34 AM To: Eric Smith; General Discussion: On-Topic and Off-Topic Posts Subject: Re: VAX 9440 > > Some people are satisfied with the handheld vacuum desoldering irons, like > the Hakko 808 (now replaced by Hakko FR-301). They're OK for some small I love my 808. Have used it heavily to re-cap arcade monitor chassis (15+) and all kinds of other circuit boards. Of course it doesn't work well when the component lead is super tight to the plate through hole, but that is an issue for wick as well. Friend swears by Pace stations. Recently picked up some Chinese soldering tweezers to aid in SMD capcitor replacement. So far not in love with them. Of course, all the SMD caps I want to remove have leaked electrolyte and the solder doesn't melt right. Hot air setup is the next thing.
Re: VAX 9440
On 11/12/2018 08:34 AM, Ethan via cctalk wrote: Some people are satisfied with the handheld vacuum desoldering irons, like the Hakko 808 (now replaced by Hakko FR-301). They're OK for some small I love my 808. Have used it heavily to re-cap arcade monitor chassis (15+) and all kinds of other circuit boards. Of course it doesn't work well when the component lead is super tight to the plate through hole, but that is an issue for wick as well. Friend swears by Pace stations. Yes, I have 2 Pace desoldering stations. One at work has an internal vacuum pump, the one at home has a venturi system that requires an air compressor. But, they REALLY pull all the solder out of the hole, and when the last pin is cleared, the part just FALLS off the board. Jon
Re: VAX 9440
What a majestic system! When I saw the teaser picture of the backs of racks on Twitter, I was assuming something in the 11/78x series. I don't know anything about the 9440 yet, so it'll be fun to read up on that. -- Mark J. Blair, NF6X http://www.nf6x.net/
Re: VAX 9440
The question is probably, could they afford the power bill? We have a bunch of Crays and CDCs at the Computer History Museum, and if they were operational, we'd probably have to take up a special very-large-hat-passing collection http://vcfed.org/wp/contribute/ :)
Re: VAX 9440
Amazing rescue! Hope nothing breaks. Right now I'm just happy no * people * broke when it was delivered! Unloading it from two 28-foot trailers required five people, two pallet jacks, and a forklift.
Re: VAX 9440
That is a behemoth!! Did you ger that huge powerforming thingy that goes with it? I'm told that we got * everything *. Are you crazy enough to atempt a power-up? Yes.
Re: VAX 9440
Amazing rescue! Hope nothing breaks. On 11/8/18, 3:55 AM, "cctalk on behalf of Evan Koblentz via cctalk" wrote: The VCF museum took delivery of a VAX 9440 today. It arrived in two 28-foot trailers. Here's our forklift driver beginning to unload the first truck: https://drive.google.com/file/d/1E-Q5xrsYXyjrZEZh92xIBhlStvvNUcRV/view?usp=sharing Here's a teaser picture of the main cabinet: https://drive.google.com/file/d/1bEpSMzBEeOvuDnzPQ9Npc7iYmDhjZq8c/view?usp=sharing The full system is 30-40 feet long when it's all set up! It is in pristine condition and was in service at a defense contractor until a couple of months ago. Rumor has it that we arranged for another one to land in Dave McGuire's Large Scale Systems Museum collection, and a third to be with Bob Roswell's System Source collection. :) Perhaps they'll post updates too!
Re: VAX 9440
I believe that a mini version of the VAX 9000 consisting of the main CPU rack can be set up for display, plus photos / posters of a full setup in the background. Add a terminal or two and we can demo the 9000 without breaking the bank. I did not check but even a few drives would suffice to demo the unit. What would be more impressive is not how many racks we get up and running but whether we network it and put the CPUs to work to do something interesting. We may even be able to bypass the huge DC power unit and just "plug in" each CPU directly using lower-AMP mains. I was inspecting the 9000 at System Source (Baltimore) this weekend, it's the same as what is at VCFed in New Jersey. I think if we keep it small we can actually use the 9000 without having to expand what power is already available at System Source or VCFed museum. Dave's LSSM may have enough to power everything as originally intended. I look forward to seeing that, too next time I go to Pittsburgh. I am lucky to live in between these three places. MyVAX 4000-705 is a baby compared with these 9000's but in the end they're the compatible and can talk to each other. It would be fun if we spent some time connecting our various VAXenz on a given day, an international event or something b On Tue, Nov 13, 2018 at 4:40 PM Evan Koblentz via cctalk < cctalk@classiccmp.org> wrote: > > The question is probably, could they afford the power bill? We have a > bunch of Crays and CDCs at the Computer History Museum, and if they were > operational, we'd probably have to take up a special very-large-hat-passing > collection > > http://vcfed.org/wp/contribute/ > > :) >
desoldering (was Re: VAX 9440)
On 11/12/18 7:24 AM, W2HX via cctalk wrote: > Hot air setup is the next thing. > I was doing some board repair this weekend, and used a mix of Hakko 472 vacuum and hot air equipment. I was having trouble clearing the holes completely with the Hakko so I heated the board with a 1" hot air nozzle, pulled the part, then used an Edsyn Atmoscope to blow the holes clean. Cleaning the Hakko is SO much easier than a Pace (there is no glass to burn your fingers on). I'm not impressed with Weller vaccums either, though to be fair it's pretty old tech.
Re: desoldering (was Re: VAX 9440)
On the topic of desoldering tweezers: I don't like them. I've done tons of rework of components down to 0201 size. I consider 0201 to be difficult, but I found that once I could work on 0201 components at all, 0402 suddenly seemed easy to work with! Anyway, the tweezers I've used had poor tip alignment, tips too blunt for small components, and of course the whole handle has to be positioned in a plane such that both tips touch their corresponding terminals at the same time. And that was with high-end Metcal tweezers. Instead, I use two pencil-type irons, one in each hand, working under a stereo microscope. The tips are much better, and manipulating each tip independently provides great control of what's going on. Only drawback is that if you want to use a fancy, expensive iron, now you get to buy two of them. If you're tempted by a soldering station with two or more outputs, make sure that it can drive both simultaneously. There are dual-output stations that have two outputs but can only run one at a time, as well as ones which can drive two irons at once. -- Mark J. Blair, NF6X http://www.nf6x.net/
Re: desoldering (was Re: VAX 9440)
On 11/13/18 7:38 AM, Mark J. Blair via cctalk wrote: > Instead, I use two pencil-type irons, one in each hand, working under > a stereo microscope. The tips are much better, and manipulating each > tip independently provides great control of what's going on. Only > drawback is that if you want to use a fancy, expensive iron, now you > get to buy two of them. If you're tempted by a soldering station with > two or more outputs, make sure that it can drive both simultaneously. > There are dual-output stations that have two outputs but can only run > one at a time, as well as ones which can drive two irons at once. After seeing the video on the ZD-985 some years ago on Dave's EEVBlog: https://www.youtube.com/watch?v=Ft50m8UU5WQ I've been wondering if it's a worthwhile tool. Does anyone have one of these things? --Chuck
Re: desoldering (was Re: VAX 9440)
All this yammering about fancy desoldering gizmos harkens back memories of a "desoldering station" consisting of a hot soldering iron ... made of a hefty amount of copper (the kind you put in a pit of fire to heat up!) and a long, skinny screwdriver, or two, used to _very_ gently pry up ICs from each end while you ran the iron along the pins, loosening the IC a bit at a time until it popped loose. Clearing the pin holes of solder involved blowing through them as you heated up the pads ... with your breath, hopefully before the pads debonded from the PC board! There's no skill involved any more with the fancy-schmancy stuff ... That also harkens back to my days in the Navy when I would go visit the local Defense Reutilization and Marketing Office (DRMO), previously just called "The Dump". That's where all sorts of DoD-owned military and commercial grade equipment was sent as soon as the new models came along that the Air Force always got first (it helps when you don't have to drive your runways full of aircraft and fuel all over the world, like we do in the Navy!). Most of the Navy stuff showed up when ships got decommissioned ... a typical ship can stay in service for four or five decades, s ... anyone need any vacuum tubes, or a mechanical fire-control computer??? Do you know why the Air Force always builds the Officers Club first, and the runways last, on a new base? Congress will _always_ approve more money to finish a runway on a typically horribly-underbid DoD contract (that their brothers-in-law always seem to be involved with)! Anyway, as I was perusing the offerings, I wandered around a corner and there was a guy sitting over what can only be described as a medieval blacksmith's furnace. He was recovering the gold and other precious metals from boards and ICs by basically heating everything and collecting the metals as they dribbled out of the cracking, charring non-metals! He appeared to be positioning the materials over time to achieve various melting temperatures, which allowed him to pretty accurately collect each metal in sequence as the materials heated up. I can only wonder whether he wound up with a medical retirement, as I don't recall him wearing any kind of respirator, and it was being done in a large warehouse structure. Come to think of it, I'm surprised _I_ didn't wind up with a medical retirement, given the amount of time I spent in those places finding all sorts of great stuff! Speaking of inheriting Air Force hand-me-downs, a little-known factoid is that Admiral Grace Hopper (co-author of COBOL and an operator of the Harvard Mark IV) used to send her enlisted people around the Pentagon in the evenings to snag things left in the halls by Air Force offices to be carted off by the janitors. That included all of the furniture in her basement-level office and even the American Flag there (complete with heavy stand and oak pole with an eagle atop it). Few able-bodied military men escorted by armed guards ever wandered around in the basement of the Pentagon because of the dank, poorly lit (if at all) corridors, let alone a woman. However, Admiral Hopper wasn't just any woman, and there are rumors that the ne'er-do-wells scattered like cockroaches when they heard her coming (and that was easy to do, as she was always instructing someone about something very useful in conversations). I still have a Nanosecond piece of ~11.2-inch insulated 22-gauge solid wire that she handed out at her presentations - it's even signed, which means it has little marks that correspond to where her signature crossed its horizontal midpoint! She originally used them to explain to MBA-degreed flag officers why there was a noticeable delay between the then-new geosynchronous communications satellites located about 22,300 miles in altitude over the Equator, and satellite ground stations. She would show them a Nanosecond wire (the distance it would take for an electromagnetic wave to travel at the speed of light in one nanosecond) and then move it along an imaginary line-of-sight from a ground station to a satellite and start counting, "One nanosecond ... two nanoseconds ... three nanoseconds ... " until the audience members all exhibited the "Ah-HA!" moment on their faces. Then, she would repeat it along another path between the satellite and another ground station. Ain't computing history great??? All the Best, Jim
Re: desoldering (was Re: VAX 9440)
I have the combo unit including solder. I do not have any other experience with any high-end ware but I can say that this unit does all I need and does it well. On Tue, Nov 13, 2018 at 7:17 PM Chuck Guzis via cctalk < cctalk@classiccmp.org> wrote: > On 11/13/18 7:38 AM, Mark J. Blair via cctalk wrote: > > > Instead, I use two pencil-type irons, one in each hand, working under > > a stereo microscope. The tips are much better, and manipulating each > > tip independently provides great control of what's going on. Only > > drawback is that if you want to use a fancy, expensive iron, now you > > get to buy two of them. If you're tempted by a soldering station with > > two or more outputs, make sure that it can drive both simultaneously. > > There are dual-output stations that have two outputs but can only run > > one at a time, as well as ones which can drive two irons at once. > > After seeing the video on the ZD-985 some years ago on Dave's EEVBlog: > > https://www.youtube.com/watch?v=Ft50m8UU5WQ > > I've been wondering if it's a worthwhile tool. Does anyone have one of > these things? > > --Chuck > >
Re: desoldering (was Re: VAX 9440)
Another Hakko 472D owner here. Got mine in pieces as used/nonworking. They're easy to rebuild. I've used the 808s at workshops/friends' places, there's no comparison IMO. I use the "pencil" style handpiece, we had the "gun" style at a previous job, I definitely like the "pencil" style better. Thanks, Jonathan On Tue, Nov 13, 2018 at 6:38 PM Ed C. via cctalk wrote: > I have the combo unit including solder. I do not have any other experience > with any high-end ware but I can say that this unit does all I need and > does it well. > > On Tue, Nov 13, 2018 at 7:17 PM Chuck Guzis via cctalk < > cctalk@classiccmp.org> wrote: > > > On 11/13/18 7:38 AM, Mark J. Blair via cctalk wrote: > > > > > Instead, I use two pencil-type irons, one in each hand, working under > > > a stereo microscope. The tips are much better, and manipulating each > > > tip independently provides great control of what's going on. Only > > > drawback is that if you want to use a fancy, expensive iron, now you > > > get to buy two of them. If you're tempted by a soldering station with > > > two or more outputs, make sure that it can drive both simultaneously. > > > There are dual-output stations that have two outputs but can only run > > > one at a time, as well as ones which can drive two irons at once. > > > > After seeing the video on the ZD-985 some years ago on Dave's EEVBlog: > > > > https://www.youtube.com/watch?v=Ft50m8UU5WQ > > > > I've been wondering if it's a worthwhile tool. Does anyone have one of > > these things? > > > > --Chuck > > > > >
Re: desoldering (was Re: VAX 9440)
I have a 605. I tend to use solder wick though, it has been a while since I needed a powered sucker. On Wed, Nov 14, 2018 at 8:40 AM systems_glitch via cctalk < cctalk@classiccmp.org> wrote: > Another Hakko 472D owner here. Got mine in pieces as used/nonworking. > They're easy to rebuild. I've used the 808s at workshops/friends' places, > there's no comparison IMO. I use the "pencil" style handpiece, we had the > "gun" style at a previous job, I definitely like the "pencil" style better. > > Thanks, > Jonathan > > On Tue, Nov 13, 2018 at 6:38 PM Ed C. via cctalk > wrote: > > > I have the combo unit including solder. I do not have any other > experience > > with any high-end ware but I can say that this unit does all I need and > > does it well. > > > > On Tue, Nov 13, 2018 at 7:17 PM Chuck Guzis via cctalk < > > cctalk@classiccmp.org> wrote: > > > > > On 11/13/18 7:38 AM, Mark J. Blair via cctalk wrote: > > > > > > > Instead, I use two pencil-type irons, one in each hand, working under > > > > a stereo microscope. The tips are much better, and manipulating each > > > > tip independently provides great control of what's going on. Only > > > > drawback is that if you want to use a fancy, expensive iron, now you > > > > get to buy two of them. If you're tempted by a soldering station with > > > > two or more outputs, make sure that it can drive both simultaneously. > > > > There are dual-output stations that have two outputs but can only run > > > > one at a time, as well as ones which can drive two irons at once. > > > > > > After seeing the video on the ZD-985 some years ago on Dave's EEVBlog: > > > > > > https://www.youtube.com/watch?v=Ft50m8UU5WQ > > > > > > I've been wondering if it's a worthwhile tool. Does anyone have one of > > > these things? > > > > > > --Chuck > > > > > > > > >
RE: desoldering (was Re: VAX 9440)
Al Kossow wrote: > Cleaning the Hakko is SO much easier than a > Pace (there is no glass to burn your > fingers on). The newer Pace desoldering tools (SX-90, SX-100) are much better, both in cleaning (disposable traps) and usage (the tips simply don't block at all). Bill S. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
