Re: Mac Classic boot problem

at a very minimum all the ones removed in the picture. Charles On Mar 9, 2016, at 10:00 PM, Stephen Collins wrote: > Which ones should I focus on to replace, or just do them all? Not sure what > you mean by a/b I assume that's the power supply. Thanks for all

Re: Mac Classic boot problem

Which ones should I focus on to replace, or just do them all? Not sure what you mean by a/b I assume that's the power supply. Thanks for all your input! -- -- - You received this message because you are a member of the Vintage Macs group. The list FAQ is at

RE: Mac Classic boot problem

: vintage-macs@googlegroups.com [mailto:vintage-macs@googlegroups.com] On Behalf Of Hardware Mack Sent: Wednesday, March 09, 2016 6:32 PM To: vintage-macs@googlegroups.com Subject: Re: Mac Classic boot problem the classic a/b, some of the time you cant even tell they are leaking until you remove em

Re: Mac Classic boot problem

You don't know whether he has a load on the PSU. On 3/9/2016 5:34 PM, Hardware Mack wrote: sounds pretty low... on the 12v side. and 5v side too! can you meter those with the hd spinning? or does the hd not even spin up. Charles -- -- - You received this message because you are a

Re: Mac Classic boot problem

You have to check ripple as well. On 3/9/2016 5:30 PM, Stephen Collins wrote: So it's a 4 lead connector into the drive - Red, Brown, Black, Orange. The Red one reads 4.88V and the Orange one reads 11.72V. How does that sound? -- -- - You received this message because you are a member

Re: Mac Classic boot problem

So it's a 4 lead connector into the drive - Red, Brown, Black, Orange. The Red one reads 4.88V and the Orange one reads 11.72V. How does that sound? On Wednesday, March 9, 2016 at 4:22:39 PM UTC-6, Notgoing Totellyou wrote: > > yep, Get readings for the +5 and +12 > > > Sent from the office

Re: Mac Classic boot problem

yep, Get readings for the +5 and +12 Sent from the office of MacCaps.com MACCAPS.COM  2 ROETHEL DRIVE SUITE D NOVI, MICHIGAN 48375 UNITED STATES Thanks. Charles Phillips 248 325 8812 On Mar 9, 2016, at 5:20 PM, Stephen Collins wrote: > Should I be able to test with a multimeter

Re: Mac Classic boot problem

Should I be able to test with a multimeter and get 12V on the drive's power lead? On Wednesday, March 9, 2016 at 4:19:09 PM UTC-6, Notgoing Totellyou wrote: > > my guess is the 12v rail is shot... as that is the first to go because of > the bad caps on the ab. > Charles > > > > > Sent from the

Re: Mac Classic boot problem

my guess is the 12v rail is shot... as that is the first to go because of the bad caps on the ab. Charles Sent from the office of MacCaps.com MACCAPS.COM  2 ROETHEL DRIVE SUITE D NOVI, MICHIGAN 48375 UNITED STATES Thanks. Charles Phillips 248 325 8812 On Mar 9, 2016, at 5:15 PM,

Re: Mac Classic boot problem

Well good news and bad news. I successfully replaced all the capacitors and cleaned the MB thoroughly. Sure enough, it fixed the sound issue. Bad news is still no internal hard drive. Last week, it would occasionally recognize on startup. Now it never does. I know the drive is good because it

Re: Mac Classic boot problem

I use those caps alot but not that method. There are methods to removing SMT caps,using 2 soldering irons, using SMT hot air station, Twist off or Wiggle off. Some swear by hot tweezers, The majority of the time I remove the bad caps with hot air. On 68kmla/ThinkClassic we have always

Re: Mac Classic boot problem

I understand that is the method Charles (Mr. MacCaps himself) uses with good success...that's how I learned it. I've done several that way with no problems so far...one or two were at least medium-ugly from the leaks. On the other hand, I pulled a pad loose on one fighting with it trying to use

Re: Mac Classic boot problem

> On Mar 4, 2016, at 10:08 AM, Louis Ciotti wrote: > > Grabbing and twisting just seem like the pad will get ripped off, especially > on a board that is slightly damaged from a leaky cap. You would think so but the downward pressure really helps to avoid this. I was

Re: Mac Classic boot problem

Grabbing and twisting just seem like the pad will get ripped off, especially on a board that is slightly damaged from a leaky cap. On Fri, Mar 4, 2016 at 1:03 PM, Wesley Furr wrote: > Sounds good to me...but of course you're working from my play book. :-) > Removing the caps

Re: Mac Classic boot problem

Sounds good to me...but of course you're working from my play book. :-) Removing the caps like that makes me nervous, but I've not yet had a problem...and it's so much easier and faster. Make sure you keep twisting and not pulling up after it starts coming loose...if a leg is hanging on, that

Re: Mac Classic boot problem

> On Mar 4, 2016, at 9:10 AM, Stephen Collins > wrote: > > I have inspected around the caps, and see no evidence of leakage. Regardless > I think they are weak, and it's probably a matter of time. Here's the > procedure I'm going with (via Wesley above). > >

Re: Mac Classic boot problem

I have inspected around the caps, and see no evidence of leakage. Regardless I think they are weak, and it's probably a matter of time. Here's the procedure I'm going with (via Wesley above). Capacitor replacement: - Grab cap with pliers, push down & twist - Clean area with isopropyl and

Re: Mac Classic boot problem

> On Mar 4, 2016, at 8:50 AM, Stephen Collins > wrote: > > Ok will do. Not as nervous about the surface mount repair since I looked at > Dave Jones' EEVlog video on the topic. Thanks for the help everyone. Fingers > crossed! Just be sure to CLEAN ti well. Not

Re: Mac Classic boot problem

Ok will do. Not as nervous about the surface mount repair since I looked at Dave Jones' EEVlog video on the topic. Thanks for the help everyone. Fingers crossed! On Friday, March 4, 2016 at 10:41:42 AM UTC-6, Dylan McDermond wrote: > > > > On Mar 4, 2016, at 8:02 AM, Stephen Collins

Re: Mac Classic boot problem

> On Mar 4, 2016, at 8:02 AM, Stephen Collins > wrote: > 1) As described above, the internal hard drive is missing most of the time, > but will occasionally appear on bootup alongside the Floppy EMU drive. 2) No > sound. > > I ask again, does this still sound

Re: Mac Classic boot problem

Update: I recently acquired a Floppy EMU from Steve Chamberlain over at http://www.bigmessowires.com. I connected it in hard drive mode on the DB-19 port. The machine runs System 6, apps and games flawlessly in this configuration with two exceptions: 1) As described above, the internal hard

Re: Mac Classic boot problem

yeah i had a Mac II that was really getting to me once. I checked all the traces, changed all the caps. installed good working ram simms. i didn’t think to pop the rom’s out and back in again, the rom i/c legs were defiantly tarnished. and then tried it and it worked fine. On Mar 3, 2016,

Re: Mac Classic boot problem

Hi Stephen, Not having hands-on, there are a number of possibilities and solutions. Can you boot from a floppy drive? Have any floppy tools? If you can put your hands on an old FWB tools floppy set or some other floppy diagnostic set, that would be a big help. After completing this email,

RE: Mac Classic boot problem

-macs@googlegroups.com Subject: RE: Mac Classic boot problem Here are part #'s and links to same on mouser.com that I bought for the couple LC's I re-worked. Not sure which of those are used in the Classic...be sure ratings and voltages match before ordering. What I would suggest is going

RE: Mac Classic boot problem

ductDetail/Kemet/C1206C105K5RACTU/?qs=sGAEpiMZZMs0A nBnWHyRQKLP9quIYhdRZscoGk%2f4rK8%3d Thanks, Wesley _ From: vintage-macs@googlegroups.com [mailto:vintage-macs@googlegroups.com] On Behalf Of Stephen Collins Sent: Wednesday, March 02, 2016 5:30 PM To: Vintage Macs Subject: Re: Mac Cl

Re: Mac Classic boot problem

Do you have a link for the capacitor? I'm new to surface mount soldering. Thanks! On Wednesday, March 2, 2016 at 2:41:46 PM UTC-6, Wesley wrote: > > Here's a post I made elsewhere about my method of doing it: > > >

Re: Mac Classic boot problem

Here's a post I made elsewhere about my method of doing it: http://www.vintage-computer.com/vcforum/showthread.php?50961-SE-30-Re-cap=400201=#post400201 If the link doesn't work, let me know and I can just re-post it here. As noted there, I'm a huge fan of the MLCC capacitors - they seem to be

Re: Mac Classic boot problem

> On Mar 2, 2016, at 11:34 AM, j...@cimmeri.com wrote: > > D, have you ever experimented with using non-SMD replacements? I think > that's how I'd try to go as I've found SMD can caps to be unreliable and very > short lived compared to leaded types. I like originality, so I usually do

Re: Mac Classic boot problem

On 3/2/2016 2:20 PM, Dylan McDermond wrote: On Mar 2, 2016, at 11:15 AM, Stephen Collins wrote: Can you help me choose the correct replacement caps? I assume Aluminum 47uf, 16V, Surface Mount. What else should I specify? Size? I am looking on digikey.com. Here

Re: Mac Classic boot problem

> On Mar 2, 2016, at 11:15 AM, Stephen Collins > wrote: > > Can you help me choose the correct replacement caps? I assume Aluminum 47uf, > 16V, Surface Mount. What else should I specify? Size? I am looking on > digikey.com. Here is what I’ve used for the Classic

Re: Mac Classic boot problem

Can you help me choose the correct replacement caps? I assume Aluminum 47uf, 16V, Surface Mount. What else should I specify? Size? I am looking on digikey.com. On Wednesday, March 2, 2016 at 12:01:55 PM UTC-6, Dylan McDermond wrote: > > > > On Mar 2, 2016, at 9:56 AM, Stephen Collins

Re: Mac Classic boot problem

One thing I did to get better with my "standard" soldering equipment on smd stuff was to order some cheap boards from eBay and then use YouTube videos. You have to look out as some of the videos are pretty bad, but if you've soldered much, you can tell who has a decent technique that works and

Re: Mac Classic boot problem

Hmm, I was afraid that would be the recommendation. I'm comfortable with soldering through-hole mounted stuff but everything (except cpu) here is surface mounted. Any links to a guide on this? On Wednesday, March 2, 2016 at 11:36:17 AM UTC-6, Dylan McDermond wrote: > > > > On Mar 2, 2016, at

Re: Mac Classic boot problem

> On Mar 2, 2016, at 9:56 AM, Stephen Collins > wrote: > > This is a Classic, so almost everything is surface mounted. I cleaned the > board with QD Electronic Cleaner just to see, but that did not help. Correct. Those metal-cased aluminum electrolytic leak all

Re: Mac Classic boot problem

> On 2 Mar, 2016, at 19:56, Stephen Collins wrote: > > This is a Classic, so almost everything is surface mounted. I cleaned the > board with QD Electronic Cleaner just to see, but that did not help. Then it’s the capacitors. You’ll need to find someone really

Re: Mac Classic boot problem

This is a Classic, so almost everything is surface mounted. I cleaned the board with QD Electronic Cleaner just to see, but that did not help. On Wednesday, March 2, 2016 at 11:42:16 AM UTC-6, Clark Martin wrote: > > Unplug and reseat the connections to the logicboard, especially the RAM. >

Re: Mac Classic boot problem

Unplug and reseat the connections to the logicboard, especially the RAM. The connections build up corrosion over time, replugging them cleans the contacts. Sent from an iPhone, don't ask whose. > On Mar 2, 2016, at 9:00 AM, Stephen Collins > wrote: > > Hi

Re: Mac Classic boot problem

> On Mar 2, 2016, at 9:00 AM, Stephen Collins > wrote: > > I cleaned the internals and system board using a can of compressed air, but > so far no water or chemicals. What should I do next? Recap the logic board. If it’s never had the capacitors replaced, it

Mac Classic boot problem

Hi everyone, I'm new to the vintage Mac scene and have a Mac Classic here with an internal Quantum 40MB hard drive and 4MB of memory. When I first got it, everything booted and ran fine. It came with 6.0.7. Over about a week, I noticed apps and even the Finder crashing. It got progressively