Clarion amp repair help
Posted: Sat Jul 30, 2011 1:10 pm
I replaced the caps in that Clarion APA4320 amp I have and powered it up before I put the board back in the amps case. Now it wont power up, instead I hear a pulsating "spark" sound coming from the ??? It's a winding of wires with a metal square deal around that, not sure if that is the transformer or not, but it makes the sound of that of a sparking type noise. I see nothing and feel nothing when I touch it as it does it.
I'm about to take the board out again and power it up and see if the 3 Blue LEDs light up again. Not sure if the mosfets are grounding out on the case or if it could be something else. I did put new thermal paste on all of the mosfets. There's a film between some of the mosfets and the case, does this need to be there between all of them or just a select few or does it not matter?
The noise is coming from the big yellowish plastic encased coil at the very bottom center of the pic. A legs on one mosfet did bend and break apart, but I soldered it back on. That is the only other thing to happen from when I first powered it up out of the case to powering it up in the case. Your thoughts?
I'm about to take the board out again and power it up and see if the 3 Blue LEDs light up again. Not sure if the mosfets are grounding out on the case or if it could be something else. I did put new thermal paste on all of the mosfets. There's a film between some of the mosfets and the case, does this need to be there between all of them or just a select few or does it not matter?
The noise is coming from the big yellowish plastic encased coil at the very bottom center of the pic. A legs on one mosfet did bend and break apart, but I soldered it back on. That is the only other thing to happen from when I first powered it up out of the case to powering it up in the case. Your thoughts?