Westinghouse W1603 TV Repair

[Fisher77]

Well I installed the new FET and the .24 resistor, plugged it in, and zap, blew the FET and the resistor immediately. I will start a new thread for this one.

[KhronX]

  If i didn't type it out in this thread, i at least thought it - if the FET and the source resistor are blown, chances are good the PWM controller's gone as well.

I've experienced that first-hand (including blowing the replacement FET) once or twice myself 

[Fisher77]

Well here is the Westinghouse up and running again. Replaced IC109. It is a LD7575 PWM.

I appreciate everyones help with it.

[Fisher77]

I do beleive you are absolutely right Monkeh. Looks like the only fix is to get another main board.

Ok, I finally got back to the Sony tv. I replaced the main board,  and it still will not fire up, and has no stanby light. Anyone have any suggestions?