Working through this one, and pads R4082/R4087 have a single 3w resistor soldered between them. The resistor runs 300+F degrees and smokes slightly and is discolored and discoloring the board. I'd like to replace this resistor with a 5w. Off the board this resistor is measuring 7.8k, but looks like this is either a 10K or maybe even a 10/100/1000 ohm resistor. Any idea what the value is supposed to be?
If you have a reason to measure the rail voltage in this amp, please post it. Don't worry about it if the amp is back together.
Parts obtained. Rail voltage is +-115.5vDC.
Another note, this amp has turn-off delay with REM. The amp continues to draw about 0.3A for 15 seconds until final shut down upon removal of rem. Sort of like JL 500/ amps. I'm not sure what that is controlling but likely something similar to the JLs. I do not need to further investigate. Amp appears to have about 3 secondary power supplies. One is for the MTX style PS.
I'm about to finish this amp this afternoon. Let me know if you need anything else.
Another note, this amp has turn-off delay with REM. The amp continues to draw about 0.3A for 15 seconds until final shut down upon removal of rem. Sort of like JL 500/ amps. I'm not sure what that is controlling but likely something similar to the JLs. I do not need to further investigate. Amp appears to have about 3 secondary power supplies. One is for the MTX style PS.
I'm about to finish this amp this afternoon. Let me know if you need anything else.