Amp ohms

[TMali 10+ year member]

I have a massive audio p1500.1 thats going into protect. Fixing this amp is the one of the final steps in finishing my build(wouldnt have to be if someone didnt sell me a broken amp....). well nothing in the amp looks fried but ive been doing some research on how to fix an amp. I was reading that most common is a short circut in the MOSFETs

so i put a DMM on them, heres a pick of what they read

if anyone could tell me which are bad and kindof how to replace them

Click to read more...

 

[TMali 10+ year member]

common guys! i know theres someone out there that know alittle about amp repair

 

[TMali 10+ year member]

anyone here in the morning know?

 

[TMali 10+ year member]

mid dayish bump

 

[TMali 10+ year member]

no1?

 

[hatedonmostly 5,000+ posts]

Talk to MakeshiftAudio, he's a real nice guy.

 

[nateberrier 10+ year member]

The transistors should look burnt or damaged. you should measure the resistance between each post. such as 1-2 1-3 2-3 on each transistor. if any of them short, replace it. Good luck finding decent transistors though, most of the ones on ebay have an N appended to the end. if this is the case I would just replace all of the ones matching the bad. also most of the newer transistors are made in china and are garbage, Im sure someone on here knows where to get them. Also if anyone knows where to get sil pads i would love you forever.

 

[nateberrier 10+ year member]

Also note that you need to take the metal place holders off and read the code on them. I cant tell you if one is bad without knowing that. the ones with the same code should all read the same. should read something like TIPS504k. Im no expert at this but i can get you started.