Hi.
My Sapphire 7950 stopped working and I found the problem - capacitor C800 has blown due too high temperatures and me not monitoring it too much.
I can't RMA it. I bought it from private person, another mistake but I got lesson for the life, that's for sure.

Can anyone tell me the value(capacitance) of capacitor?

Hi, see if some one local that does electronic repairs its worth a few phone calls.

oops!!

If it's a reference design it should be 100pF/50V. Not guaranteed as manufacturers are allowed some freedom within the specs.

The problem here is as there's no markings and as it's obviously blown it can't be measured.

Would it be as simple as measure the one beside it and hope its the same?

Skip one and measure the next (C791 or C827). tbh it's only a decoupling capacitor, should run fine as it is if it hasn't gone short-circuit. Be careful if your equipment outputs more than 800mV AC for the measurement as these connect directly with the vRAM. Most compact meters use around 30mV but they are not accurate enough for the job due to the ram being a semiconductor.

What manufacturer and model, I'll try and grab schematics.

OK. Assuming standard parts:

100pF 25V DSCC casestyle: 0402 should do you just dandy - by experience

Can you still get in touch with the seller? People do that all the time on here, not sure what Sapphire's RMA process entails exactly though.

Ripshod said:

OK. Assuming standard parts:

100pF 25V DSCC casestyle: 0402 should do you just dandy - by experience

Click to expand...

Thank you sir, will try your size capacitor and I will hope for the best.


There is positive and negative pin on capacitors, how I can tell what side is negative on those type capacitors?
Or I should take 50/50 chance

It looks like its a ceramic cap, so non-polarized.

Confirmed it's a ceramic, no polarity.

SMD, harder to solder than Cap but I have done so on a G-Force 4 Ti 4600.

Surface mount's OK, decent soldering iron, fine tip, don't dwell too long to avoid overheating things

Ripshod said:

OK. Assuming standard parts:

100pF 25V DSCC casestyle: 0402 should do you just dandy - by experience

Click to expand...

Got them, wrong size.
Mlcc 0402 X7R 25V 100Pf - MULTICOMP


Anybody knows the right size?

Have you tried contacting Sapphire directly? Twitter might be a good idea and they might be able to DM you a tech email

Try measuring what you've got. I suspect it might be 0402 metric, rather than 0402 imperial

http://en.wikipedia.org/wiki/Surface-mount_technology#Packages

Try measuring what you've got. I suspect it might be 0402 metric, rather than 0402 imperial

http://en.wikipedia.org/wiki/Surface-mount_technology#Packages

onsen said:

Hi.
My Sapphire 7950 stopped working and I found the problem - capacitor C800 has blown due too high temperatures and me not monitoring it too much.
I can't RMA it. I bought it from private person, another mistake but I got lesson for the life, that's for sure.

Can anyone tell me the value(capacitance) of capacitor?

Click to expand...

Pray it hasn't damaged that controller chip, there are burn marks on it

humbug said:

Pray it hasn't damaged that controller chip, there are burn marks on it

Click to expand...

Looks to me like it's only staining from the capacitor burning out.

same problem on R9 280X dual-x

Hi ! I got a shappire R9 280X that is dead (black screen and fans doesn't spins).
When you have replaced that blown capacitor , you have solved the problem??
I have an image of my faulty board