amp repair, part ID

[NCC74656]

need to know if these fets and resistors are the proper replacements.

im looking at 24 resistors and 20 fets, all with the same labling. its on the power side of a 2500W Viper amp.

here are pictures of my blown ones:

and here is what im looking at replacement wise.

http://www.digikey.com/scripts/DkSe...=635604798806214543&CSRT=11423872297582443546

http://www.digikey.com/scripts/DkSe...=635604798806214543&CSRT=11423872297582443546

if they are not correct, please direct me to the proper parts. thanks.

 

[davenn]

hi there

you haven't told us the part number on the transistors it looks like IRF 3205 can you confirm please
and what is the colour code on the resistors

Neither of your links work, both are error 404 not found

cheers
Dave

 

[NCC74656]

links work on my end. the fets are 3205, yes.

the resistors are red/red/black/gold

 

[davenn]

links work on my end. the fets are 3205, yes.

the resistors are red/red/black/gold

probably cuz they are cached on your puter






rd rd bk is 22 Ohms

 

[KrisBlueNZ]

Do you know why they all failed?

Are you sure there are no other faulty or damaged components?

 

[NCC74656]

while I don't know for certain why it failed I suspect it has to do with the cold weather. It was negative 15 degrees and my remote starter was not working, my remote starter has a relay that disables the radio when remote started. I went out to start it with a key and the stereo was on full blast. When the stereo kicked on the app popped. When I opened the amp the FETs are shattered, half of them look like somebody took a hammer to them.I want to replace all the resistors and all the fets. The capacitors do not appear to be popped. I cannot see any visual damage on the output side of the amplifier. The amplifier itself still turns on but I do not get a power light on the side of the amp.

 

[KrisBlueNZ]

So the IRF3205 is available in TO-220 package in two versions, one with a 'Z' suffix and one without. I don't see any 'Z' on the ones in your photo, so the replacement would be http://www.digikey.com/product-detail/en/IRF3205PBF/IRF3205PBF-ND/812033

The resistors aren't critical; suitable ones are http://www.digikey.com/product-detail/en/RNMF14FTC22R0/S22CACT-ND/2617472

Good luck!