Audio pipe ap3k repair need some help please

@ampjunkielikeme ;

You cant just replace the burnt parts and expect it to work. There are other parts that are hooked to those burnt parts that need to be checked and replaced as well. If the power supply went poof, you will need to check all the gate resistors , gate drive transistors and the power supply controller IC chip. all those parts on your 3k are surface mounted parts and are very small and a ***** to mess with...

Also, the driver card for the outputs could be shorted out . or it could have shorted output transistors that do not show obvious signs of damage. you will need a digital multimeter on diode check to find the bad parts...

Have you fixed amps before? Or is this the first time?

What this man says ^^^^

At the end of the day, just blindly throwing parts at these you'll likely have spent the cost of the amp new and still have a POS unreliable amp.

sometimes you can get lucky and change out the blown parts and the amp will work.. but most of the time you have to get more in depth and find the problem. you need to know what the amp does and how it works before you can do advanced repairs. or you can just replace everything you can identify on the board blindly and hope it works again.

if your amp is in protection. it still has a short somewhere . you must find it. follow the traces from the burnt parts you replaced. they lead to resistors or transistors. etc... set your meter on diode check to check for shorts. the meter will beep constantly and the meter will read a dead a dead short 0.00 .

you can go on diyaudio.com . it has a car amp repair section. post your problem on there . lots of other guys on there that can help you more than me.

this site will help out tons.. buy the amp repair tutorial from perry. it is worth it..

Basic Amplifier Repair