I have this punch 55.2 amp I'm working on I replaced the power supply fets and driver transistors. Amp still won't come on. Also removed all shorted outputs. No lights nothing, can anyone help me with this? Thanks
Board number is pc-1882-a
Board number is pc-1882-a
Anyone ? I just freshly replaced gate resistors, power supply mosfets (irf3205) and driver transistors. It's not coming on I'm not sure what to check next, any ideas??
Post the DC voltage on the LM339.
IC#
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:
IC#
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:
I suppose, TL494 & LM339 get like warm. I don't get what's going on with this amp never experienced this problem usually I replace short semis and a few resistors and smd transistors and its working again but this one is something else...
Any possible way to check this w/o a meter? I left mine at my buddy's I have to go pick up it but for the mean time, I have a meter that measures continuity... TL494 & LM339 both get luke warm when I have power applied to the amp. No fets get warm or hot all stay cold.
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