Re: Preferred way of substituting TFT for CRT Monitor?
The 98549A board is 1024x768, 6 planes (4 color, 2 overlay, at least under HP VUE -- perhaps there's a way it can make use of all 6 planes for color, but I don't know how). Otherwise, that matches what I've observed here. ok bear. On Jan 21, 2016, at 8:51 AM, wrote: > Yesterday I checked the 9000/217 98204B combo with my oscilloscope and I can > confirm the 25kHz horz. frequency (1V down to 0.3V pulses every 40 us). > I cannot measure the pixel clock as my oscilloscope was too cheap (I had to > compromise) and thus cannot sample at higher MHz rates. I only see that it > goes from 1V to approx. 2.2V. > Just for my understanding: if I do the math: 512 pixels x 400 rows = 204'800 > pixels at 50 Hz I end up with 10.2 MHz and at 60 Hz = 12.3 MHz. > There is more "room" required for the retrace time, probably another 10% or > so? > So I understand that the monitor must be capable of ~25 kHz and 10...14 MHz > and that I better try before buy. > > It is difficult to find specs for these HP 9000 video boards. > In case it is useful for someone ... my list below is still missing DIO-bus > type (1 or 2) and signal frequencies. > > 98204B Video Board medium resolution (512x390)monochrome > for 35721 monitor, DIO-1 > 98542A Monochrome Video Boardmedium resolution (512x400)monochrome > 98543A Color Video Board medium resolution (512x400)16 colors > 98544B Monochrome Video Boardhigh resolution (1024x768) monochrome > 98545A Color Video Board high resolution (1024x768) 16 colors > 98546A/B Monochrome Video Board medium resolution (512x390)monochrome > alpha/graphics, for 216/217 display compatibility > (a pair of cards, compatible with 2136 and 217 displays (512x390, > 25x80)) > 98547A Color Video Board high resolution (1024x768) 64 colors > 98548A Monochrome Video Boardhigh resolution (1280x1024)high > performance > 98549A Color Video Board high resolution (1280x1024)high > performance > 98550A Color Video Board high resolution (1280x1024)high > performance > 98700A Graphics Display Station high resolution (1024x768) 256 colors > 98710A Graphics Accelerator optional for 98700A > 98720A High Performance Boardhigh resolution (1280x1024) nur HP-UX, > requires 98724AA interface and 98784A monitor > 98730A High Performance Boardhigh resolution (1280x1024) nur HP-UX > 98722 memory upgrade optional for 98720A > > Martin > > -- until further notice
Re: Restoring Old Paper Tape
On 01/21/2016 6:46 PM, Charles Anthony wrote: On Thu, Jan 21, 2016 at 6:21 PM, Jason T wrote: On Thu, Jan 21, 2016 at 8:04 PM, Charles Anthony wrote: For part 2, personally, I would take movies of the paper tape moving and doing image analysis to recover that data; this occurs to me because I've done a fair bit of image recognition software, so this solution may not be feasible for all. If you sent me a sample movie, I would make a stab at writing some data recovery software. I have heard of those approach and was thinking it may be a solution in cases where the tape is too fragile (and that's pretty likely here.) It would be well beyond my abilities but might make an interesting project for you or anyone else with the skills. The general approach would be to have the tape backlit (on a piece of glass, with a light source and and diffuser underneath ) and guide block that the tape slides against so the holes move left-to-right but not up and down. The camera is set up so that the tape fills the image as much as is feasible. You start the camera, and slide the tape. Constant speed is not important, but avoid backing up. Grab a frame from the movie. Figure out the approximate pixel coordinates of the data and pin feed holes in the axis moving across the tape (eg, the 1 bit is about 24 pixels from the top of the image, the 2 bit is about 47 pixels from the top, etc). Process the movie a frame at a time. Grab a column of pixels from the center of the image from top to bottom. Look at the pixels around where the pin feed is, decide if they are light or dark. If light, the a character is centered in the column. If not, move to the next frame. look at the pixels around where each data bit is, and decide if the are light (punched) or dark (unpunched). Write out that data. Skip frames until the pin feed pixels go dark, and then skip frames until it goes light again; that will be the next character. Repeat. The pin feed holes greatly simplify the process. This process is quite analogous to reading multi-track magnetic media with a timing track. Test on a known tape. Debug. Run over damaged tapes; data recovered. -- Charles Would it not be simpler to make an optical reader to handle this job? You need a light source and the correct number of opto transistors to read the light from each hole. There is an index built into the tape so that is easy to set. Something like this: http://hackaday.com/2014/05/02/reading-paper-tapes-from-scratch/ Of course my assumption above is based on tape that is still complete. If it has holes or can't be pulled then, yes, photographing and visually reading the dot patterns may be necessary, but that sounds rather impractical if there are more than a couple of tapes to transcribe. John :-#)# -- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out"
Dec items for sale or trade (winter cleaning), HP
8-A boards- i found more, or most, but no FP8 Quantity of LA34, 38, 50, 100, 120 printers and parts Quantity of DECMATE, Rainbow, and PRO units and parts H7883 ps H7894-MA ps 30-43120-01 ps 30-44712-01 ps DEC PC WXE-A2 (2) DEC PC443 DXLP CELEBRIS 560 830WW VENTURIS 466 854WW (2, one is very rough) VENTURIS 575 821WW VS42S-JC VT1200 VX10A-AA HP 82901M flexible disc drive Shipping from 61853. Feel free to contact me off list with any questions and offers. Paul
UA11 Boards have arrived!!
I know some folks sent an email to me indicating their desire for a UA11 board but others may have waited until they arrived. The boards arrived this week (I'm just getting to it because I was out of town on business). They actually got here a week a head of schedule (yea!). The price will be $99/ea + shipping. To make it easy, I'll be using USPS priority with flat rate boxes, so within the USA I'll be charging $15 for packing and shipping, so the total will be $114 (for folks that want more than one board I can probably fit 2-4 boards in the flat rate box so I'll only charge shipping once). I will also be including 1 copy of printed documentation with each order (if you purchase multiple boards in a single order, you'll only get one copy). I accept paypal to g...@shiresoft.com. If you don't want to use paypal, email me directly and we can figure something out. In any case, please email me to indicate the number of boards that you'd like and where you want them shipped. The folks who have emailed me previously will have priority. TTFN - Guy
RE: Restoring Old Paper Tape
By all means, let's discuss and it will be a useful and fascinating conversation both now and in the future. But just as a thought for the more immediate issue (your tapes)... I find it somewhat unlikely that a significant number of early HP 21XX paper tapes are not already archived, or in good condition elsewhere. So at least regarding your particular stash of tapes, I'd suggest first getting a list up of what all you have. At the least, you may find machine readable images already exist, or that of all your tapes there's only 3 that should be given heroic efforts There's a major percentage of those tapes online, and I have a pretty huge (cases and cases) stash of early 2114/5/6 & 2100 tapes I haven't even cataloged yet. I should do the same, but at least mine are all (currently) in pristine shape :) J
Re: Restoring Old Paper Tape
On Thu, Jan 21, 2016 at 6:21 PM, Jason T wrote: > On Thu, Jan 21, 2016 at 8:04 PM, Charles Anthony > wrote: > > For part 2, personally, I would take movies of the paper tape moving and > > doing image analysis to recover that data; this occurs to me because I've > > done a fair bit of image recognition software, so this solution may not > be > > feasible for all. If you sent me a sample movie, I would make a stab at > > writing some data recovery software. > > I have heard of those approach and was thinking it may be a solution > in cases where the tape is too fragile (and that's pretty likely > here.) It would be well beyond my abilities but might make an > interesting project for you or anyone else with the skills. > The general approach would be to have the tape backlit (on a piece of glass, with a light source and and diffuser underneath ) and guide block that the tape slides against so the holes move left-to-right but not up and down. The camera is set up so that the tape fills the image as much as is feasible. You start the camera, and slide the tape. Constant speed is not important, but avoid backing up. Grab a frame from the movie. Figure out the approximate pixel coordinates of the data and pin feed holes in the axis moving across the tape (eg, the 1 bit is about 24 pixels from the top of the image, the 2 bit is about 47 pixels from the top, etc). Process the movie a frame at a time. Grab a column of pixels from the center of the image from top to bottom. Look at the pixels around where the pin feed is, decide if they are light or dark. If light, the a character is centered in the column. If not, move to the next frame. look at the pixels around where each data bit is, and decide if the are light (punched) or dark (unpunched). Write out that data. Skip frames until the pin feed pixels go dark, and then skip frames until it goes light again; that will be the next character. Repeat. The pin feed holes greatly simplify the process. This process is quite analogous to reading multi-track magnetic media with a timing track. Test on a known tape. Debug. Run over damaged tapes; data recovered. -- Charles
Re: Restoring Old Paper Tape
On Thu, Jan 21, 2016 at 8:04 PM, Charles Anthony wrote: > For part 2, personally, I would take movies of the paper tape moving and > doing image analysis to recover that data; this occurs to me because I've > done a fair bit of image recognition software, so this solution may not be > feasible for all. If you sent me a sample movie, I would make a stab at > writing some data recovery software. I have heard of those approach and was thinking it may be a solution in cases where the tape is too fragile (and that's pretty likely here.) It would be well beyond my abilities but might make an interesting project for you or anyone else with the skills.
Fwd: Re: Kaypro Motherboard Add-On Question
Hmm, no one able to help? Forwarded Message Subject:Re: Kaypro Motherboard Add-On Question Date: Fri, 8 Jan 2016 22:25:39 -0600 From: Jim Brain To: General Discussion: On-Topic and Off-Topic Posts On 12/12/2015 10:52 AM, Glen Slick wrote: On Sat, Dec 12, 2015 at 8:32 AM, Jim Brain wrote: http://www.ebay.com/itm/USED-KAYPRO-4-COMPUTER-MOTHERBOARD-/331730690952? The non soldermask boad on top of the main unit intrigues me. Does anyone know what it is? Jim The board says Centram Systems, Inc, Camp Hill, Pa. There is a marketing blurb in the August 15, 1983 issue of Computerworld. Don't know if it is for that exact board. Long ugly link: https://books.google.com/books?id=soGti0kvtgwC&pg=RA1-PA71&lpg=RA1-PA71&dq=centram-systems+inc+kaypro&source=bl&ots=6Vnr0qZn3W&sig=otazIdpkt4Y5Oyrp9jjKKrv_dq4&hl=en&sa=X&ved=0ahUKEwjHtaP34tbJAhUL9mMKHWnaDYQQ6AEIIDAB#v=onepage&q=centram-systems%20inc%20kaypro Sorry for the delayed update, but after a few relistings, I was able to secure the PCB for a reasonable price. It is indeed the board listed on the link, and here is another link: https://books.google.com/books?id=7xNVMAAJ&pg=PA267&lpg=PA267&dq=the+web+nt+centram+systems+inc+kaypro&source=bl&ots=xy6yxBjbgc&sig=ByqG8cnOV0sZbxZDf3rKwxA30rg&hl=en&sa=X&ved=0ahUKEwirpYH76pvKAhWDNiYKHeDfA2oQ6AEIIDAB#v=onepage&q=the%20web%20nt%20centram%20systems%20inc%20kaypro&f=false The product is called "KayNet", a baseband twisted pair CSMA/CD local network operating at 125kbps. It uses a network called Web, designed by Centram Systems, Inc. of Camp Hill, PA. The network software , OPSnet, was written by Aquinas, INc., and is compatible with CP/M 2.2 I secured the board, but it needs to be reverse engineered and I lack the time at present. Anyone want to take on the effort? I also need to track down OPSnet OS, and I think there is a bit more to this board (the documentation I found mentions a switch and an RJ-11 connector. I see what looks like the LED wires on the PCB, and there are 3 more pins on the PCB that could be the RJ11 pins. There is a wire that is soldered to U65:pin4 on the motherboard, which I assume is the switch but maybe hooked to this gate as a way to make the switch a softswitch. Here is some documentation: https://archive.org/stream/bitsavers_kayproKayn_4822341/Kaynet_Users_Guide_1983_djvu.txt Here is the KayNET documentation: https://archive.org/details/bitsavers_kayproKayn_4822341 http://maben.homeip.net/static/S100/kaypro/hardware/kaypro%20kaynet%20users%20guide.pdf (Thanks Jason Scott!) Anyone interested in bringing this network back to life? I am happy to design and manufacture replacement PCBs at cost for this... More on KayNET: https://books.google.com/books?id=ui8EMBAJ&pg=PA3&lpg=PA3&dq=kaynet+kaypro&source=bl&ots=0BU3jTdrH3&sig=LsCiZJVRumQ7QgRa1-QpuzpefQ8&hl=en&sa=X&ved=0ahUKEwiOjZLr75vKAhXL8CYKHVxUAdwQ6AEIKjAC#v=onepage&q=kaynet%20kaypro&f=false http://gopherproxy.meulie.net/gopher.floodgap.com/0/archive/walnut-creek-cd-simtel/KAYPRO/KPRO-LAN.INF This looks very interesting, but I think I need help to move forward. Jim -- Jim Brain br...@jbrain.com www.jbrain.com
Re: Restoring Old Paper Tape
On Thu, Jan 21, 2016 at 5:56 PM, Jason T wrote: > I'm tossing this out here as a conversation-starter more than a > request for help, although I may end up putting the knowledge to use. > Today I received a set of original HP paper tapes for the 2115a > machine. I don't know if they've been archived or not - there are > dozens of HP tapes on bitsavers and I'll have to make a P/N list and > compare them. The real problem is they're in horrible shape. Decades > of basement moisture and likely a few critters have turned them > blackened, moldy and stuck together. > > So, what to do? How to get to the data without a bio-hazardous > payload along for the ride? My thoughts go toward sunlight and/or U/V > light (like a hair salon sanitizer,) rubber gloves and a mask, > isopropyl alcohol, careful picking apart of layers, etc. I'd think > one thing in our favor is that holes in paper are going to be easier > to read than ink on paper. So Part 1 is getting them into readable > condition, with part 2 being the actual reading. > > For part 2, personally, I would take movies of the paper tape moving and doing image analysis to recover that data; this occurs to me because I've done a fair bit of image recognition software, so this solution may not be feasible for all. If you sent me a sample movie, I would make a stab at writing some data recovery software. -- Charles
Restoring Old Paper Tape
I'm tossing this out here as a conversation-starter more than a request for help, although I may end up putting the knowledge to use. Today I received a set of original HP paper tapes for the 2115a machine. I don't know if they've been archived or not - there are dozens of HP tapes on bitsavers and I'll have to make a P/N list and compare them. The real problem is they're in horrible shape. Decades of basement moisture and likely a few critters have turned them blackened, moldy and stuck together. So, what to do? How to get to the data without a bio-hazardous payload along for the ride? My thoughts go toward sunlight and/or U/V light (like a hair salon sanitizer,) rubber gloves and a mask, isopropyl alcohol, careful picking apart of layers, etc. I'd think one thing in our favor is that holes in paper are going to be easier to read than ink on paper. So Part 1 is getting them into readable condition, with part 2 being the actual reading. Any experience out there? -j
Re: Any Collectors in Italy, near Milan?
If some italian friend could find me one of these... http://fraelbruc100.msxit.org/ :) 2016-01-21 22:06 GMT-02:00 supervinx : > Well.. I'm in Italy but far away... (in the south) > You can visit MuPin in Turin. > Let me think a bit... I'll post something else. > There's a lot of collector, but they don't read this list... > -- > Vincenzo (aka Supervinx) > > --==ooOoo==-- > My computer collection: > http://www.supervinx.com/OnlineMuseum > > --==ooOoo==-- > You can reach me at: > www.supervinx.com > www.facebook.com/supervinx > http://www.youtube.com/user/supervinx > http://www.myspace.com/supervinx > >
Re: Any Collectors in Italy, near Milan?
Well.. I'm in Italy but far away... (in the south) You can visit MuPin in Turin. Let me think a bit... I'll post something else. There's a lot of collector, but they don't read this list... -- Vincenzo (aka Supervinx) --==ooOoo==-- My computer collection: http://www.supervinx.com/OnlineMuseum --==ooOoo==-- You can reach me at: www.supervinx.com www.facebook.com/supervinx http://www.youtube.com/user/supervinx http://www.myspace.com/supervinx
Re: Any Collectors in Italy, near Milan?
Do a search for Olivetti M20. You'll find several people in Italy. The M20 was a Z8000 processor and is more interesting than the 8088/86 machines. Even so, they may connect you to other DEC collectors. Dwight From: cctalk on behalf of Robert Jarratt Sent: Thursday, January 21, 2016 1:58 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Any Collectors in Italy, near Milan? I am going to be visiting Milan in a few weeks' time. I was wondering if there are any collectors on this list who live in that area, who would like to show off their collection, if I can get a bit of time away from the family? I have a particular interest in DEC machines, but other makes also interest me. If so, please get in touch Regards Rob
Any Collectors in Italy, near Milan?
I am going to be visiting Milan in a few weeks' time. I was wondering if there are any collectors on this list who live in that area, who would like to show off their collection, if I can get a bit of time away from the family? I have a particular interest in DEC machines, but other makes also interest me. If so, please get in touch Regards Rob
Looking for an IBM SP/2 (the supercomputer, not a typo)
I was contacted by a guy who works for a computing lab at a major US University on the East Coast who is looking for an SP/2 they can display in their lobby. I have one, but it'll be a monumental pain in the to get out of here. I wanted to drop a line and see if anyone had one they'd be willing to part with in the US, preferably near-ish to the right coast. Thanks all; - JP
Re: C64 system cost?
- Original Message - From: "william degnan" To: "General Discussion: On-Topic and Off-Topic Posts" Sent: Thursday, January 21, 2016 3:52 PM Subject: Re: C64 system cost? > > >> >> >> >> > >> > Mike Stein, while you're printing and delivering these, I'd like to offer >> > my opinion that, as much as I appreciate a contemporary, >> high-performance, >> > hyper-complex web stack (I work on this stuff for my career), there's >> > certainly beauty in a plain-jane http server that's easily manageable by >> > one guy, simple and reliable. I looked at it and there's no shame in >> Jim's >> > stuff -- it's quite adequate and arguably exactly the right tool for the >> > job. >> > >> > thx >> > jake >> >> Sorry, Jake, not sure what you're trying to say. >> >> m >> > > > Mike, > I think Jake means that it's ok to have a simple web site. > Bill Ah, Joe's site, not Jim's; got it. Agreed; too many sites ignore that there are still folks out there with pay-per-byte or dial-up access, not to mention the frustration of wading through a lot of prettifying fluff. m
Re: C64 system cost?
> > > >> > > > > Mike Stein, while you're printing and delivering these, I'd like to offer > > my opinion that, as much as I appreciate a contemporary, > high-performance, > > hyper-complex web stack (I work on this stuff for my career), there's > > certainly beauty in a plain-jane http server that's easily manageable by > > one guy, simple and reliable. I looked at it and there's no shame in > Jim's > > stuff -- it's quite adequate and arguably exactly the right tool for the > > job. > > > > thx > > jake > > Sorry, Jake, not sure what you're trying to say. > > m > Mike, I think Jake means that it's ok to have a simple web site. Bill -- @ BillDeg: Web: http://www.vintagecomputer.net/";>vintagecomputer.net Twitter: https://twitter.com/billdeg";>@billdeg Youtube: https://www.youtube.com/user/billdeg";>@billdeg http://www.vintagecomputer.net/readme.cfm";>Unauthorized Bio
Re: C64 system cost?
- Original Message - From: "Jacob Ritorto" To: "General Discussion: On-Topic and Off-Topic Posts" Sent: Thursday, January 21, 2016 8:30 AM Subject: Re: C64 system cost? > On Thu, Jan 21, 2016 at 1:58 AM, Mike Stein wrote > [...] >> >> I'll give Joe a printout of these messages when I see him tomorrow to let >> him know what folks are saying about him; as Jim says he's usually pretty >> good but s**t happens sometimes. >> > > Mike Stein, while you're printing and delivering these, I'd like to offer > my opinion that, as much as I appreciate a contemporary, high-performance, > hyper-complex web stack (I work on this stuff for my career), there's > certainly beauty in a plain-jane http server that's easily manageable by > one guy, simple and reliable. I looked at it and there's no shame in Jim's > stuff -- it's quite adequate and arguably exactly the right tool for the > job. > > thx > jake Sorry, Jake, not sure what you're trying to say. m
RE: Preferred way of substituting TFT for CRT Monitor?
> Just for my understanding: if I do the math: 512 pixels x 400 rows = 204'800 > pixels > at 50 Hz I end up with 10.2 MHz and at 60 Hz = 12.3 MHz. > There is more "room" required for the retrace time, probably another 10% or > so? To avoid the inaccuracies from the unknown vertical retrace time (and unused lines, etc) I would say that 512 pixels per line and 25kHz line time -> a pixel rate of at least 12.8MHz. It will be higher than that due to the horizontal retrace time, of course > So I understand that the monitor must be capable of ~25 kHz and 10...14 MHz > and that > I better try before buy. Yes. > It is difficult to find specs for these HP 9000 video boards. I have no idea as to the resolution, but there is an HP98204A that outputs TV rate (US or European I think) video. -tony
RE: Preferred way of substituting TFT for CRT Monitor?
Yesterday I checked the 9000/217 98204B combo with my oscilloscope and I can confirm the 25kHz horz. frequency (1V down to 0.3V pulses every 40 us). I cannot measure the pixel clock as my oscilloscope was too cheap (I had to compromise) and thus cannot sample at higher MHz rates. I only see that it goes from 1V to approx. 2.2V. Just for my understanding: if I do the math: 512 pixels x 400 rows = 204'800 pixels at 50 Hz I end up with 10.2 MHz and at 60 Hz = 12.3 MHz. There is more "room" required for the retrace time, probably another 10% or so? So I understand that the monitor must be capable of ~25 kHz and 10...14 MHz and that I better try before buy. It is difficult to find specs for these HP 9000 video boards. In case it is useful for someone ... my list below is still missing DIO-bus type (1 or 2) and signal frequencies. 98204B Video Board medium resolution (512x390)monochrome for 35721 monitor, DIO-1 98542A Monochrome Video Boardmedium resolution (512x400)monochrome 98543A Color Video Board medium resolution (512x400)16 colors 98544B Monochrome Video Boardhigh resolution (1024x768) monochrome 98545A Color Video Board high resolution (1024x768) 16 colors 98546A/B Monochrome Video Board medium resolution (512x390)monochrome alpha/graphics, for 216/217 display compatibility (a pair of cards, compatible with 2136 and 217 displays (512x390, 25x80)) 98547A Color Video Board high resolution (1024x768) 64 colors 98548A Monochrome Video Boardhigh resolution (1280x1024)high performance 98549A Color Video Board high resolution (1280x1024)high performance 98550A Color Video Board high resolution (1280x1024)high performance 98700A Graphics Display Station high resolution (1024x768) 256 colors 98710A Graphics Accelerator optional for 98700A 98720A High Performance Boardhigh resolution (1280x1024) nur HP-UX, requires 98724AA interface and 98784A monitor 98730A High Performance Boardhigh resolution (1280x1024) nur HP-UX 98722 memory upgrade optional for 98720A Martin
Re: C64 system cost?
On Thu, Jan 21, 2016 at 1:58 AM, Mike Stein wrote [...] > > I'll give Joe a printout of these messages when I see him tomorrow to let > him know what folks are saying about him; as Jim says he's usually pretty > good but s**t happens sometimes. > Mike Stein, while you're printing and delivering these, I'd like to offer my opinion that, as much as I appreciate a contemporary, high-performance, hyper-complex web stack (I work on this stuff for my career), there's certainly beauty in a plain-jane http server that's easily manageable by one guy, simple and reliable. I looked at it and there's no shame in Jim's stuff -- it's quite adequate and arguably exactly the right tool for the job. thx jake
Re: Data Recovery Services
On 21 January 2016 at 12:50, Peter Faraday wrote: > Iv had some luck with drives where the head gets suck in the park position. > If the drive spins up then shuts down it could be this. Bit of an > agricultural fix but, take the lid off and give the head a slight nudge off > the centre and get the lid back on quick. I'm lead to believe this will > only work with old drives dew to the tolerances in gap of head to platter. > Big risk with this is crashing the head into the disk but iv used it a few > time with 100% success. The drives were from early 90s https://en.wikipedia.org/wiki/Stiction#Hard_disk_drives -- Liam Proven • Profile: http://lproven.livejournal.com/profile Email: lpro...@cix.co.uk • GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lpro...@hotmail.com • Skype/AIM/Yahoo/LinkedIn: liamproven Cell/Mobiles: +44 7939-087884 (UK) • +420 702 829 053 (ČR)
Re: Data Recovery Services
Iv had some luck with drives where the head gets suck in the park position. If the drive spins up then shuts down it could be this. Bit of an agricultural fix but, take the lid off and give the head a slight nudge off the centre and get the lid back on quick. I'm lead to believe this will only work with old drives dew to the tolerances in gap of head to platter. Big risk with this is crashing the head into the disk but iv used it a few time with 100% success. The drives were from early 90s On Thu, Jan 21, 2016 at 6:30 AM, Chuck Guzis wrote: > On 01/20/2016 11:26 AM, Pete Rittwage wrote: > > The services can be expensive (in the thousands, typically) so the data has >> to be pretty valuable to you in order to proceed. >> > > I'll second Drivesavers--they've recovered very damaged drives, including > a few buried in mud after a hurricaine. They'll rebuild a drive if they > have to. > > They're also one of the few companies who have working relationships with > SSD makers and claim that they can un-brick many dead SSDs. > > Nice people, too. But yes, expensive, very. > > --Chuck > >
