Re: Diamond Monster3D - Missing smd caps
Posted on 2021-09-09, 23:03
Did you use "L" inductors to replace these L labelled solder pads? Cheers,
Re: What was the purpose of the plastic covers on some chips on the IBM HDD PCBs?
Posted on 2021-09-09, 00:52
Any one who had C= computers would disagree with you. Very sensitive to ESD. This is what killed our Ti 94/A back in the day, no matter how careful we were. Cheers,
Re: suggesti0ns for a skinny cpu heatsink/fan
Posted on 2021-09-09, 00:39
Wider heatsink and a look on ebay you should able to find some server specific heatsink for this type. Tualatin CPU is more than 30W running at that speed. Cheers,
Re: What case do these drive sleds and other parts go to?
Posted on 2021-09-09, 00:18
The black bars are for card guides. Rarely used as most card are not full length. Cheers,
Re: What was the purpose of the plastic covers on some chips on the IBM HDD PCBs?
Posted on 2021-09-09, 00:16
These are ESD shields. Back in the day ICs was extremely sensitive. Cheers,
Re: Thermal tape ripped CPU die off of substrate
Posted on 2021-09-08, 22:52
Adhesive thermal tape? This has not enough w/mk and is not intended use especially on bare die applications. Stick with thermal pastes like MX-4 or 5, AS5, NT-H1/H2 etc. Cheers,
Re: Can someone explain to me about the capacity of old hard drives?
Posted on 2021-09-08, 22:46
That one is correct model number. 4.3 AT means 4.3GB PATA/ATA. Cheers,
Re: Can someone explain to me about the capacity of old hard drives?
Posted on 2021-09-08, 19:52
This printings is not "this can do...", rather it is listing of details for each model to save you from searching or calling some body else for the settings to input into the computer. The true model # is somewhere else on the hard drive. In this case usually a sticker on the IDE connector or …
Re: Help with old VLSI motherboard
Posted on 2021-09-08, 02:40
This actually was IBM. What model, I know not. Cheers,
Re: Compaq Portable III Motherboard / CPU Problems
Posted on 2021-09-06, 23:04
One of these 240W ATX SFF PSU from HP would work perfect, pull apart to get board and install that, just add a -5V regulator if needed. Cheers,
Re: ASUS p55t2p4 repair
Posted on 2021-09-06, 22:53
Yay! Cheers,
Re: Replacing tantalum power decoupling decoupling caps on vintage motherboards
Posted on 2021-09-06, 18:28
MLCC are not that expensive now. Polymer capacitors are excellent subs too. Cheers,
Re: Compaq Portable III Motherboard / CPU Problems
Posted on 2021-09-06, 18:26
Buy a ESR capacitor meter. The switching power supply can be serviced but need to substitute the components as original parts were no longer made. Toughest part is blown resistors means you need to look into working power supply of exact one. Study the power supply of compaq's to understand what …
Re: Bought these (retro) hardware today
Posted on 2021-09-06, 18:08
No. Quantum did not have rubber issue. These early 3.5" quantum drives run hot and ruins these platters' coatings to wear off quickly and heads sticks to platters. Easily solved with a quick twist right after turning power on. This is due to case designers not accounting for hot running hard drive …
Re: Bought these (retro) hardware today
Posted on 2021-09-06, 18:05
Micropolis has rubber bumper sticking issue when it self-park when off. Watch for that. Happened even back in the day! Cheers, Is that only with their MFM drives? I have a massive Micropolis SCSI drive I pulled from an external enclosure and I have no idea if it works or not because the enclosure …
Re: Bought these (retro) hardware today
Posted on 2021-09-06, 01:05
Micropolis has rubber bumper sticking issue when it self-park when off. Watch for that. Happened even back in the day! Cheers,
Re: ASUS p55t2p4 repair
Posted on 2021-09-06, 01:01
Not supported configuration. Pentium boards requires 2 matched set of 72 pin. if 4MB, this needs two 4MB sticks, or two 8mb sticks, or two 16MB sticks so on. You do not have two 16MB or two 128MB. But you have two matched 32MB sticks. Use this only. Cheers,
Re: IBM pc 330 450dx2 PSU questions
Posted on 2021-09-06, 00:57
The early soft power PSU that you see often in some computer also in IBM computers of this type are exactly same way as ATX do. These 3 pin connectors are: Turns on when one wire grounded, one of wire is 5Vsb and other wire is ground. Recheck the wires before you wire up the ATX to this old pinout …
Re: RAM adapter . for 286 motherboard - MB81C1000 , GM71C1000, HM511000, HY531000, MT4C1024, M5M41000, MCM511000, UPD42
Posted on 2021-09-05, 14:30
Precisely. I have compaq memory expansion board by kingston, only way to fit is original 1MB x 1bit dip memory. Can make adapters but the pins has to be SMT with width of the SOJ 1MB x 1bit on top. Problem is where to find pins that is SMT (bent solder pad). Cheers,
Re: Quantum Trailblazer 850AT on a 386 DX 40 motherboard shows only 504 MB in dos.
Posted on 2021-09-05, 01:47
That will work, as 500MB, that's the max on 386, and it will boot still. Cheers,
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