Asrock K7Upgrade-880 "fails" memtest86+

[mrmazda]

OST on MB's are shit. OST on PSU's are shit (especially near the power transistors), in fact OST is probably as bad as the Fujjjuckus.

So if I replaced the 4 OST 3300uf 6.3v near CPU that appear fine on my Asrock K7Upgrade-880 it might not be a waste of time? What about the 4 KZE 1200uf 16v in same vicinity?

When it was rather young it gave trouble and I replaced 16 1000uf 6.3v and it seemed much better for a couple of years. Eventually I began having random trouble with various Linux activity. Then for a while it seemed to be behaving well, so I added a 2nd HD. Then freeze-ups began.

I ran memtest86+ and almost immediately it spewed endless red. I tried 6 different RAM sticks total, and same thing with all. Then I disconnected both HDs and ran memtest from CD, which did 5 passes plus with no errors. So there must be a power problem of some sort. I changed PS to a newer Earthwatts that was working fine when shelved last year. With it, the board won't even POST.

Might replacing caps with no obvious bulges or leaking really resurrect this antique?

[mariushm]

Re: Asrock K7Upgrade-880 "fails" memtest86+

KZE is not a problem series. KZG and KZJ are.

Unlikely to be a problem.

Replace the capacitors near the ram slots if you have ram problems and you know the memory modules are good.

[mrmazda]

Re: Asrock K7Upgrade-880 "fails" memtest86+

I negelected to mention the OSTs are RLX and the KZE are NK.

The few caps near the RAM slots were all replaced years ago, Nichicon 1000uf 6.3v HM.

[stj]

Re: Asrock K7Upgrade-880 "fails" memtest86+

check BOTH your psu's

even if the board has problems, the fact that the second psu was worse means it's got problems too.

[mrmazda]

Re: Asrock K7Upgrade-880 "fails" memtest86+

Both PSUs pass my digital PS tester. I've already replaced a couple of caps in the original PSU years ago. The much newer 2nd is a 430w 80+ Antec Earthwatts with 3300uf 16v and maybe a 1000uf 16v I already changed, but still has 4 original 1000uf 10v OST RLP and 3 OST RLX 2200uf 10v.

[stj]

Re: Asrock K7Upgrade-880 "fails" memtest86+

afaik those testers check voltage - not ripple.

i have a cheaper version with led's and it's really only good for go/nogo tests atfer you do a repair.