Hi,

We were hit by thunder few month ago and many devices go fried. I repaired some of them.
Our sound card M-audio Fast track Pro is one of the destroyed item.
When opened I noticed these two burnt resistor.

Any idea which value they have ?

I found an image of that pcb there and it seems these resistors are "0" acting I guess as fuses, could it be ?



What do you think ?

Thank you for your replies

 

0 is not a fuse, it is a jumper (short circuit). Luckily in your case it acted like a fuse.

Sometimes because of the layout the designer decided to use jumpers, but more often big manufacturers use the same PCB for a family of products.. another soundcard of the same family might have a resistor there.

 

thank you meth for your reply and your explanations,

I have some 0 ohm smd resistors around. I'll replace them and let you know.

 

I replaced the jumpers. I checked continuity, ok. But no luck.
After further investigation I noticed that chip exploded

Looks like a texas instrument 5(7?)21..

It's in the power supply managment area


what chip could that be ?

Thanks

 

Maybe it is 211 op amp? But I cant be sure, you will have to figure out from the layout, if the pins (VCC, GND, input, output) make sense according to the 211 pinout.

 

Thanks for your reply again,
I'll check that

 

It may be the TI TPS2111, power MUX