Hey everyone, got a JL Audio 500/1 that i disassembled to paint the heatsinks, unfortunately when reassembling i forgot to put insulator between output mosfets and the heatsink. when powering up i got green light, then low load warning light and smoke, i quickly disconnected power supply. upon first inspection i got one of output fets fried and 5 power supply transistors shorted. power supply gate resistors all measure about 47 ohm. any chance i can fix the thing just just using my soldering skills and a multimeter? i dont have oscilloscope on hand, any help would be appreciated.
Best regards
Best regards
Power it up. Do you read approximately the same DCV between the gate and source pads for the PS FETs?
What is that voltage?
Do you have any replacement parts on hand?
What is that voltage?
Do you have any replacement parts on hand?
just to double check, do you want me to check the voltage between gate and source pads for all PS fets, correct? regading the parts - i just ordered replacement fets, should be here in a coulple of days
I hope you didn't order from ebay or amazon.
It would have taken less time to measure than to get a reply. Yes.
It would have taken less time to measure than to get a reply. Yes.
The measurements for all 8 PS fets are 5.96 volts. Regarding parts - ordered from reputable local pats seller.
I need you to measure the gate/source on the output FETs.
What sort of soldering iron are you using? Tip shape on it?
Do you have desoldering braid?
What sort of soldering iron are you using? Tip shape on it?
Do you have desoldering braid?
The layout is slightly different but the general location is the same. I didn't have a good photo of a rev11.
I know there is virtually no chance that the solder bridge isn't making contact but double-check.