GA-6VXC7-4X-P torn off capacitors

[pfrcom]

Scored this GA-6VXC7-4X-P by the kerb, complete with Celeron 900, one 256mb SDRAM DIMM and a TNT2 M64 AGP card

Worth saving seeing it's built around VIA's 694X chipset, their final edition for Coppermine

Problem is, two capacitors are torn off, at TC23 and TC24, just behind the PS/2 connectors

Can someone tell me what are their specs please

[Scenic]

Re: GA-6VXC7-4X-P torn off capacitors

probably the same values as the other caps (same size) around it..

[shadow]

Re: GA-6VXC7-4X-P torn off capacitors

Scenic is right. The values are probably the same as the others around it.

Those capacitors seem to be part of the VRM. In nearly every board I have seen, identical capacitors are used throughout the VRM.

[jpdoe]

Re: GA-6VXC7-4X-P torn off capacitors

I've seen a few motherboards where there's two sets of capacitors.
Most of them are in the first set: those filtering Vcore
But there's a couple in the second set: those filtering the VRM input. These are the first to go bad when a cheap PSU is used.

I would guess a good way to be sure if the missing caps are filtering Vcore is to use a DMM to check if the missing caps are in parallel with the surviving Vcore caps

[PCBONEZ]

Re: GA-6VXC7-4X-P torn off capacitors

Check with DMM and find out if they are high/low side VRM or something else.

[stevo1210]

Re: GA-6VXC7-4X-P torn off capacitors

I have a similar board and I will check what caps go in the position of the torn off ones. It's been pouring with rain here in Sydney and my shed is flooded so I've gotta wait for a day with less rain to drain out my shed and also drain the flooded computer stuff left in there.

Thanks.

[pfrcom]

Re: GA-6VXC7-4X-P torn off capacitors

Torn-off caps are not in parallel with the existing ones, which are 1200uf 6.3v

The board fired up after I put in a pair of 1500uf 6.3v

Hope to hear from someone what the actual values need to be

[Harvey]

Re: GA-6VXC7-4X-P torn off capacitors

Check the voltages on those new capacitors - if they are connected to 12V you'll end up having more 'torn off' capacitors soon as the case and half of the internals heads towards the sky

[PCBONEZ]

Re: GA-6VXC7-4X-P torn off capacitors

Looked for photos of that section of board but couldn't find any.

My guess is those are VRM-high and probably in parallel with that one next to them.
And, that caps on other side of MOSFETs are VRM-low.

Can't tell without tracing the circuit.

I did find one photo that showed those missing caps but the values weren't positioned to read them.
They -looked- from the back side to be the same as the still present one next to them but that's not very reliable.
.

[PCBONEZ]

Re: GA-6VXC7-4X-P torn off capacitors

Check the voltages on those new capacitors - if they are connected to 12V you'll end up having more 'torn off' capacitors soon as the case and half of the internals heads towards the sky

YES, that needs checked but I think he's okay.
Socket 370 GA boards I've seen all used +5v for CPU.

[pfrcom]

Re: GA-6VXC7-4X-P torn off capacitors

Is there anyone with one of these geriatric boards ?

[PCBONEZ]

Re: GA-6VXC7-4X-P torn off capacitors

Why do you ask?
I have similar GA boards but not that one.
Mine are i815 chipset and uATX and take up to P3-S 1.4Ghz Tualatin.

[PCBONEZ]

Re: GA-6VXC7-4X-P torn off capacitors

GA-6IEML
[Couldn't remember. Had to go look.]

[pfrcom]

Re: GA-6VXC7-4X-P torn off capacitors

Thanks for looking

Everything works with the substitute 1500s, but those caps are slightly warm to the touch, whereas cannot feel any warmth in the ones nearby

Would like to have manufacturer's original values as replacements at TC23 and TC24, for peace of mind

Despite their age, it's worth keeping mature versions of hardware with late stepping chipsets and firmware having most bugs eradicated

Is your new avatar a methaphor for Linux and Micro$oft ?

[PCBONEZ]

Re: GA-6VXC7-4X-P torn off capacitors

If I was a better artist I'd put a shirt on the bear that said Microsoft.
~ WAKE UP!

[tj2]

Re: GA-6VXC7-4X-P torn off capacitors

pfrcom, I can confirm that the original values for capacitors TC23 and TC24 are 1200 uF, 6.3 V, not that you're likely to be concerned anymore. I have this board in front of me right now. The capacitors in these positions are Choyos. The rest of the caps on the board are bad quality too: G-Luxons and GSCs.

[PCBONEZ]

Re: GA-6VXC7-4X-P torn off capacitors

I traced out the circuit on the GA-6IEML when I recapped the first one.
It has two 1200uF 6.3v in parallel with two 330uF 25v on high side [PSU side] of VRM.
I've been replacing all 4 with 1000uF 6.3v MBZ and they are happy campers.
.

[pfrcom]

Re: GA-6VXC7-4X-P torn off capacitors

Thank you very much TJ2 - it is reassuring to know what I put in would be within tolerance of the originals

[tj2]

Re: GA-6VXC7-4X-P torn off capacitors

pfrcom, Do you still have the board, and if so, has it been working properly? I found that the caps I put in on my FB11's VRM got fairly warm at first, but they settled down and now they run cool. I assume that they just needed a forming charge, which heated them up, and then they were fine. (They were a few years old from the vendor.)

[PCBONEZ]

Re: GA-6VXC7-4X-P torn off capacitors

When you install NOS caps let the system sit at the BIOS screen for about an hour.
That will reform them without putting much actual work load on them.
.