Gigabyte GA-8IE533 with busted caps

[Toasty]

Re: Gigabyte GA-8IE533 with busted caps

It looks great!

However, as PC so eloquently pointed out to me , I never realized that you used the FC's in the VRM. I thought you used them for the other miscellaneous caps and the FJ's in there.

Somewhere I got the wires crossed in my head of which ones you were putting where...

I think the saving grace here is that you doubled them up by filling the 2 open spaces. You have 4 where there used to be 2. The FC specs are 1850mA ripple and an ESR of 35 mohms. You've effectively Doubled the capacitance there, your ESR is 8.75 mohms, and ripple is 7400mA. I have no idea what the GSC's were rated for (I have no specs), but I think the 4x FC's are rather close.

My immediate concern would be the single FC. It may cause a problem in the future.

Best of Luck!
Toast

[c_hegge]

Re: Gigabyte GA-8IE533 with busted caps

I thought FC were fine for the VRM in (although I wouldn't use them for VRM out), although you probably know more about it than me. Also, I believe that the single cap in parallel with the other 4. My multimeter registers 0 ohm between the legs on the four caps and that single one.

The only markings on the GSC caps (other than the voltage and capacitance) are [RE] 105*C and T29A. RE series maybe?

[PCBONEZ]

Re: Gigabyte GA-8IE533 with busted caps

I see 3x 16v caps in the original list and 5 FC's in there now.
I dunno where you got 2 and 4.

-> Presumably GSC MZ series in a VRM.
3x GSC MZ 1500/16v/10mm => 8310mA & 4.0 mohms.
5x FC => 9250mA & 7.0 mohms.
-
The Ripple only helps the FC's to not over heat.
It's the ESR that affects the other VRM caps and that's nearly doubled.
.
U C

That solo cap off in the corner is still in parallel with the others.
They do that so the tiny bit of resistance in the trace doesn't cause [allow] any fluctuations at the other end.
- It's like putting a Ferrite Bead on both ends of a cable instead of using one at one end.
.

[PCBONEZ]

Re: Gigabyte GA-8IE533 with busted caps

If they were RE series you are fine. [And upgraded with 5 FC in there.]

In fact if Gigabyte was stupid enough to use only 3 RE there then that might of killed the Sanyo over time. [If they are bad that is. I still don't think they are.]

[c_hegge]

Re: Gigabyte GA-8IE533 with busted caps

I'm pretty sure that the GSC were RE series I can post a pic of one if you like. I don't know for sure that the sanyo are bad. It may have been the addition of the polys that helped, but it's stable now and I'm happy

[goodpsusearch]

Re: Gigabyte GA-8IE533 with busted caps

I found a GA-8IE533 with 1 bulging Choyo 3300uF 6.3V cap.
The mobo booted with the bulging cap. I did that test to decide if it was worth recapping.

I recapped it with OST RLS 3300uF 6.3V and the mobo booted again.

Now, 6 months later, I decided to fit the motherboard to a PC case. The mobo is now dead. When pressing the power button, cpu fan spins, power led lights, no error beeps, no post, nothing.

I have tested every cap with esr micro, small or big, and replaced some suspicious ones...

Then I took the mobo out of the case and put out the CPU and then reseated it. The mobo worked and I got error beeps = no ram. I put some ram and then I got no vga beeps. But when I placed a vga it went dead again. This happened again 2-3 times but the mobo would stop working sooner.

I have an identical mobo that is ok, so I know that those symptoms (cpu fan spins and power led lights, no post/beeps) are meant to happen when you power the mobo without a CPU installed. So, it is like a CPU contact issue..?


The CPU is ok, I used it in another mobo and it worked, I tried also another CPU with the GA-8IE533 mobo too and nothing changed..

Any idea/advice welcome.... Thanks!

[PCBONEZ]

Re: Gigabyte GA-8IE533 with busted caps

Get rid of the Choyo and OST.
.

[severach]

Re: Gigabyte GA-8IE533 with busted caps

Bad brands that are very old can fail in such a way that they test fine on an ESR meter but they won't work under load. Applying rated voltage from a bench supply usually smokes these out. Do this outside where the explosions are fun and not stinky.

[PCBONEZ]

Re: Gigabyte GA-8IE533 with busted caps

And sometimes you can play rocket launch!
.

[goodpsusearch]

Re: Gigabyte GA-8IE533 with busted caps

I replaced every Choyo capacitor, even the small 22uF 16V ones...

Still, the m/b just spins the CPU fan and does nothing more...

[PCBONEZ]

Re: Gigabyte GA-8IE533 with busted caps

Often that means bad chipset.
-
Did you inspect the chipset?
Did you look for bad MOSFETs?
Is PSU known good?
Did you reset the CMOS?
.
Figuring you did cause you've been here a while...
... but did you?
.

[goodpsusearch]

Re: Gigabyte GA-8IE533 with busted caps

Often that means bad chipset.
-
Did you inspect the chipset?

.

Ι visually inspected the northbridge and southbridge and also touched them with my finger to see if they get extremely hot, but they were ok.

Did you look for bad MOSFETs?

Yes and I also tested the Vcore and found it 1.55V stable.

Is PSU known good?

Yes, and I tested the m/b with another one just to make sure.. It didn't post.

Did you reset the CMOS?

Yes.

[RJARRRPCGP]

Re: Gigabyte GA-8IE533 with busted caps

it locks up (mouse doesn't move, num lock and caps lock don't work, etc) after ~10hrs on Prime95.

That usually only occurs when the core is OC'ed beyond what the chip can handle.

Maybe too high of core temp.

But running for 10 hours before a crash, sounds like it may be too hot.

[c_hegge]

Re: Gigabyte GA-8IE533 with busted caps

As I said, I did fix it by polymodding the VRM-out. It's still going strong to this day btw.

[RJARRRPCGP]

Re: Gigabyte GA-8IE533 with busted caps

As I said, I did fix it by polymodding the VRM-out. It's still going strong to this day btw.

Damn! Maybe the Ost caps on my Asus A7V8X-X with my 2004 T'bred 2400+ KIXJB was also causing a wall!

At roughly 2415 Mhz, it starts doing that lock-up bull shit at around 5 minutes of Prime95.

My Asus A7V8X-X, which I don't have anymore, also had green Chemicon KZE.