can i fix my kenwood cd player?

[KD#1]

my cousin was hooking up my kenwood cd player and put the positive and negative speaker wires together and now there is no sound coming from the speakers..i hooked a amp and sub to it and it played through the sub but still not from regular speakers...I have tried other speakers and even tried hooking a speaker directly to the cd player speaker wires and it still wont play...I think he fried the audio or something...is there a way I can check it or fix it...I know how to Sauder and I am good with fixing things like this I am just not sure where I should start looking for the problem

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[keep_hope_alive Premium Member]

head units use an STK pack for an amplifier chip. all of the amplification is contained in one or two chips about 1/4 the size of a credit card. replacing the chip is the only option (20 pins or so).

typically, these chips have internal short circuit protection and will just shut off as long as the short circuit is present. make sure each speaker wire from the head unit is separate and insulated - disconnect all of them. then test one speaker output at a time. don't do this in your car. hook up the radio on a table and use a power supply to turn the radio on. i use insulated terminal strips to land wires for testing purposes so i don't have loose wiring.

lesson learned here is NEVER wire a head unit while it is on and ALWAYS disconnect the battery when dealing with exposed wires in the dash.