Help! A7V died after mod. Need to change C6 ???

[lionknight]

Ok, here is the short story: I did voltage mod on A7V to get higher vcore. Bad luck for me, I chipped half of the C6 (that's capasitor 6)on the raised power board (you know what I'm talking about). So when I re-solder it again the MB won't boot. I guess it's only the C6 that is fried cos the MB still make noise (endlees loop of 2 tones).
Now, anybody there can help me to figure out what's the value of the C6? Or better still, what can I change that with? I don't know where to get that super small capasitor, so I'm thinking if I can change that with normal capasitor.

Help please....

ps: C6 is the bottom most capasitor next to the IC that control the vcore. It's written there on the MB.

If you want to know about this mod or want to see picture go to http://www.vr-zone.com/guides/a7v133/

 

[Rob Cork]

Do you mean the one indicated below? If you do, I've been told by Deviant that it's a 1mF capacitor, used only for cleaning the voltage going to the cpu. I desoldered mine by accident, and remade the connection with a blob of solder instead of a capacitor - it works

I think the important thing is to make sure that point is still connected to ground - where it used to go to ground through the capacitor, just ground it through the solder instead. I haven't noticed any reduction in stability or voltage regularity with the loss of the capacitor, guess I got lucky! Just be veerry careful not to touch any other connections on the mobo with the solder, and keep your fingers crossed... good luck with it

 

[Deviant]

Do what rob said, and hopefully it will still work fine.
Rob must of made a typo, cause it's actually a 1nF capacitor. Also I had the same high/low tones and it was the CPU that was fried, so I suggest trying a new one in your mobo, after you fix the mobo problem.

 

[FlyingDingle]

I've wanted to do this volt mod also but my A7V doesn't look quite like the one I see in all the pics. If you look at the pic above, i've got another capacitor to the right of the highlighted one. I've tried sending the guy who put the article together that illustrates this on Tom's hardware, but I didn't get a reply. I know the article was translated to english, so the guy just might not be able to reply or he just insn't replying. Anyway, i'm wondering if anyone knows if I can do this same mod and it will work? If anyone knows, please respond. I've been having a hell of a time getting this question answered. I've got a peltier with a good HS on it and I just need to be able to turn my voltage up.

A7V, Tbird 800@950

 

[lionknight]

Thanks for the fast response guys, I will try it. I know that my Duron 600 is still ok cos I fire it up on another board and its alive, so its the mobo that faulty.

FlyingDingle,
See If this pic the same with ur A7V:

ASUS A7V and A7V-133 VCORE MOD

www.ocinside.de

 

[Rob Cork]

Deviant (Mar 17, 2001 08:15 p.m.):
Do what rob said, and hopefully it will still work fine.
Rob must of made a typo, cause it's actually a 1nF capacitor. Also I had the same high/low tones and it was the CPU that was fried, so I suggest trying a new one in your mobo, after you fix the mobo problem.

It wasn't a typo, I meant to write that - guess I got confused :-D

 

[lionknight]

Ok, tried the trick, no luck. The MB still crying. I checked around the c6, all looks ok. I might have damaged something else, like the resistor instead, or the other capasitor cos resistor is more "burnproof". I finally bought new ABIT KT7A and change the whole system to it. It's working fine now.

So, any other idea to salvage my poor A7V?

Thanks anyway, guys.

 

[FlyingDingle]

lionknight (Mar 18, 2001 03:30 a.m.):
Thanks for the fast response guys, I will try it. I know that my Duron 600 is still ok cos I fire it up on another board and its alive, so its the mobo that faulty.

FlyingDingle,
See If this pic the same with ur A7V:

ASUS A7V and A7V-133 VCORE MOD

www.ocinside.de

Yup, that's the one. Thanks for the info lionknight.