GA-965P-S3 doesn't boot even after recap

[otoluk]

For GA-965P-S3 REV1.0 (Doesn't apply to ga-965p-ds3 which has solid caps.)

The mainboard had history of overheating, the video card is with passive cooling and SB got very hot, this could speeded up the failure.
Firstly the Intel SATA ports failed first and the HDD controller reported intermittent errors in event viewer and PC sometimes locked. Temporary it could be fixed by plugging HDD into GSATA ports. But after couple months the PC didn't boot. Inspected the board visually and found two blown caps(didn't check the brand)

Replaced the 2 blown caps(DEC11, DEC12) 6.3V 3300uF. After that PC could be booted but only after powering on/off 2 times everytime. Now again it doesn't boot. The symptoms: the CPU cooler works but no POST beeps - nothing. What else could be at cause?

Other caps on board:
16V/1500uF Rubycon (MBZ) 4x
6.3V/1000uF Nichicon (HM(M)) 20x
16V/470uF KZG 1x (gigabyte - why put different brand for 1 cap?)
10V/100uF TEAPO (A3) 7x
16V/100uF can't see ends with E...con (E67F) 1x

[PCBONEZ]

Re: GA-965P-S3 doesn't boot even after recap

Nichicon HM with 2001-2004 date codes are defective due to manufacturing goof.
Nichicon Date Codes.. in H0322 .. the "03" = year 2003 [and the "22" = week 22.]
- Need to replace all of them.

Chemicon KZG are bad and often don't bloat.
- Need to replace all of them.

Evercon are bad but a small one like that is less likely to be the problem than HM or KZG.
- Probably don't -need- to, but I'd replace it anyway.
.

[PCBONEZ]

Re: GA-965P-S3 doesn't boot even after recap

(gigabyte - why put different brand for 1 cap?)

You could have two or three Gigabyte same model & revision motherboards from the same factory and almost every cap can be different between them.
Just depends on what they had that day for that spec cap.

About the age your board is Gigabyte was using KZG, HM, and MBZ interchangeably.
What you got was luck of the draw.
.

[RJARRRPCGP]

Re: GA-965P-S3 doesn't boot even after recap

What processor is on that board?

[otoluk]

Re: GA-965P-S3 doesn't boot even after recap

Thanks.
Processor is Pentium D or something. The board is year 2006. Nichicon HM date code A0630

I will replace 6.3V/3300uF with Rubycon when they arrive and replace chemicon and evercon. Let's see.

[Uranium-235]

Re: GA-965P-S3 doesn't boot even after recap

its not the board that has a history of overheating, it's the processor. Pentium D is one of the most terribly overheating processors in the history of desktop processors. get a better heatsink on there, clean them up (heatsink bottom and cpu top), and put some artic silver on there (fine, thin layer, spread as thin as you can get it)

were DEC11/12 near the CPU?.....the heatsink might not be transferring enough heat off it and the chip itself is overheating the board, and thus the caps (why those 2 probably originally bloated)

go ahead and replace the KGZ's, thats your best bet, but I would also try an alternative CPU if you've got one, those D's draw some serious power and require some higher voltage, of a cap blew and was blown for a long period of time, it might have put too much current through the cpu vrm

oh yeah replace the nichis too, I like Sanyo's, but Panasonics are just as good

[otoluk]

Re: GA-965P-S3 doesn't boot even after recap

Yeah but North and South bridges were heating a lot too and the passive cooled VGA(one bad cap on it also) maked it even worse. I salvaged the broken PC at my workplace so nothing to lose. The bad caps was around CPU of course. Reapplied the thermal paste it was hardened like a brick, almost lifted the NB .

Is there a dealer for Rubycon in Europe? I just calculated for replacement of all caps it costs 40$ locally. I just don't seem comfortable to order from badcaps the caps then will travel - Asia->USA->Europe

[RJARRRPCGP]

Re: GA-965P-S3 doesn't boot even after recap

its not the board that has a history of overheating, it's the processor. Pentium D is one of the most terribly overheating processors in the history of desktop processors.

Some Conroes seem to be the same, too.

My E4500 will get hot easily with a stock heatsink. And the E2180s seem worse.
Makes me kind of amazed that I can OC it to where I am.

[Uranium-235]

Re: GA-965P-S3 doesn't boot even after recap

check your voltages, make sure your PSU isn't putting too much juice to it. it would explain why it not only runs hot, but why you can overclock it well

[PCBONEZ]

Re: GA-965P-S3 doesn't boot even after recap

In Europe that I know of there is RS Components.

There is also a member here [Big Pope] that sells Samxon out of Hong Kong.
You can PM him.
.

[otoluk]

Re: GA-965P-S3 doesn't boot even after recap

Resoldered all caps except Nichicons, there are too many of them and one naughty cap pissed me off. At first it didn't boot so I thought that I failed but after CMOS reset it was back to life. Now it works again .

There was one cap witch I couldn't unsolder correctly. It has two alternate mounting holes and it was impossible to extract it. Used 50W iron and 240°C temp is it not enought? Ended up with this.



After one week of burn-in there is only one problem remaining. I can't use RAM in dual channel mode the board reboots in endless cycles.
What is causing this?

[c_hegge]

Re: GA-965P-S3 doesn't boot even after recap

240°C isn't even close to hot enough. I always use at least 450°C

[otoluk]

Re: GA-965P-S3 doesn't boot even after recap

my mistake I wanted to spell 450°C just miscalculated . But the soldering iron can't push higher than that maybe I should look for chisel tip for iron. Neverless soldering the cap on side did the trick so for a now let it sits like that.

Still looking what causes the dual RAM fail.

[otoluk]

Re: GA-965P-S3 doesn't boot even after recap

Got it! The problem with the dual channel RAM is only when Intel QST is enabled. Strange that CMOS reset doesn't clear that, I can boot only when RAM module is set in slot3 so the QST disables automatically and then disable it in BIOS. Tried different bios and the same problem.
How this QST works? What interferes with it?