newbie needing help i got this amp months ago and i never really get to work on in sinse i was allways have other units to work on.Here is the deal local trade in jl 500/1 slash pcb rev-3 100006 .Before me posting here i spend good 2-3 hours inspecting the unit and i didnot foud and bad power supply or output fets.All resistors near the output are teasted and all with the tolerance.There is no burn marks or signs of previous repair ,when conected to the power supply them amp works but the audio output is very very low -10 watts max.i left it working for good 30 min and no overheating in the power or output side,no current on the speaker conectors.The audio output is clear with no distortion but very low.No ternal or low ohm lights any help is apresiated
input voltage sellection is set to low .week aggo i had same rev-3 jl audio for repair and i swaped the input boards but the amp keeps playing very low.The only part that i see must be changed is those large capacitors near output section 1200uf 100v-they have the bubble on the top.I ve seen plenty amps working fine with those capacitors bad.
Can you desolder Q515? If you can lift two legs and leave it in place, it will be easier to reinstall it later.
The transistor is under the preamp board near the large white resistor near the speaker terminals.
It's going to appear that it's leaking if you check it. That's normal.
With that transistor out of the circuit, does it produce audio at a normal level?
The transistor is under the preamp board near the large white resistor near the speaker terminals.
It's going to appear that it's leaking if you check it. That's normal.
With that transistor out of the circuit, does it produce audio at a normal level?
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