Good news. Board is fully working again! Resistor was actually fine but the trace really was broken. Used a wire and now it works fine. Thank you everyone for helping find and fix the issue. I hope I will be able to use the board for a lot longer now. Oh and btw got a new CPU for it as well

Well thanks for the tips however the drive is as dead as a dodo. The bottom 2 head sensors were not even on the platters and there is a big scratch under the first platter. The PCB board is working fine though so if you know any reason not to throw it away as well say it here Edit: also found …

For the Bigfoot several things may be going on. You could look into: - the coils to position the actuator may fail. - The heads may be damaged somehow (big arm!) - some read error for positioning data - some part (s) on the PCB runs out of spec - internal data chip corrupted Good luck figuring …

I have a Quantum bigfoot that broke some time ago. The drive spins up, initializes, spins down, repeat until bios shows as not detected. Confirmed that the IDE PCB is working fine and the platters don't seem to be damaged by a head crash. Can someone more knowledgeable help?

Problem with that cap theory is its position, it would have to leak against gravity. It looks like MC34063 is driving Q17 Q18? and pin 1 where that resistor seems to connect also provides main power to the transistors. Geofand26 did you by any chance forced CPU in wrong orientation and powered the …

Well repair hasn't gone well. I am not sure what the values of the shorted resistor are to find the correct replacement. Does anyone have the same board to measure the values it has?

Thanks for the answers. I cant troubleshoot any further for now so after a few hours i will write back with results. You helped me more than most repair shops which just tell me "its too old so i wont even diagnose it" so again thank you so much!

Just checked under the bios chip and i can vaguely see a blacked(burned?) trace. Probably killed the bios chip. Gonna remove the socket and see what i can do about the trace. Can i flash a new bios on an eprom chip or do i have to use something else?

Doornkaat wrote on 2022-01-28, 09:20: Geofand26 wrote on 2022-01-28, 09:01: Its C21 for sure Not to be a dick but it isn't. It got burned yea you are correct sorry for wrong info

0 stands for 0 ohms You should be able to solder it shut Best I can see, that pad is set up in a T configuration to where you could put the link in one of three ways, or it ‘s meant to hold a link or a three legged component of some type, my bet is it’s set up as a switch, and that bridge is the …

That's a 0 Ohm resistor. It's like a soldered jumper. The silk screen marking is probably 'D21' (instead of C21) and referrs to a diode that may be installed in its place. (There's a third solder pad above the resistor and three legs are marked.) There's probably another fault on this motherboard …

Specs: Motherboard: PC Chips M577 CPU: AMD K6-2 266 GPU: Intel i740-8 GPUalt(more powerful but not used now) : Siluro t400 64mb HDD1: 4.5gb quantum fireball HDD2: 2.5gb quantum bigfoot CDD:32x generic ROM FDD1:1.44mb FDD2:1.44mb RAM: 96MB Other: 10/100 fast internet card; serial mouse; AT keyboard; …

Yesterday I was installing a HDD when my PC Chips m577 motherboard died. It looks like a capacitor/resistor (?) leaked. On the board it's C21 but had a black 0(zero) on it like a resistor. I don't know what it is and what to actually buy for a repair. Can someone help? Screenshot_2022-01-28-09-30-09 …

Noted. Thanks 👍

Those specs are off... SRAM is used in caches and no K6-2 system would have more than 2MB (or 16Mb) of it. You probably mean SDRAM. Anyway, reading what you probably mean instead of what you actually say, you have a late So7 CPU, some AGP cards, one of which is nVidia. That sounds like you want a …

I've never seen that a bad ram configuration can fry the motherboard, so maybe just the ram went bad and not the mobo. What layout is it, AT or ATX? If it is ATX Super Socket 7 ATX boards are getting expensive, maybe you can get a i440BX cheaper and fit it in the case. Its an AT power supply. I am …

Hello! I recently restored an old family computer. Everything worked fine except for the RAM. I tried to change the jumper config but i messed something up and i think i fried the board... So i am looking for a new board. Any ideas from you? the specs: amd k6-2/266 afr cpu intel i740 agp gpu/siluro …