kenwood ps400m

[lussks]

hello evryone im new to the site.... i have a couple of questions i purchased a couple of amps from ebay(kenwood ps400m) the seller said they where working but when i powerd them up one dindt turn on the secon one turned on but no sound took them to get repaird but the tech had no luck any one ever worked on these amps before that they could lead me in the right direction thanks

[Perry Babin]

Did you contact the seller to see if you could get a refund?

If you haven't done any repair work previously, read through the basic repair page (link below).

What test equipment do you have?

[lussks]

i contacted the seller he never replied and when he replied he said they where working but stated they night have gotten a little wet in his garage( yea thanks for telling me that once i had purchased them) im a automotive mechanic the only thing i have that comes to mind is a digital meater... thanks for the help

[Perry Babin]

If you want to try to repair them, start with the one that's dead. Power it up (check the fuses to make sure they're not blown) and post the voltages on the UPC494 IC. This is the pin numbering scheme:
http://www.bcae1.com/temp/tl494pinconfiguration01.jpg

Place the black meter probe on the amplifier's ground terminal. Place the red meter probe on the point where you need to measure the voltage.

Copy and paste this into your reply:

IC6
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 15:
Pin 16: