jl audio 1000/1 version 1 rev 10

[klangston76]

I recently bought the amp,the guy hooked it up wrong.when i opened it i had a 100nj100 rattling loose in it dont know where it goes.I believe i was answered on position c809,c810,and c839 as these are all missing in the board.Is there anything in position c509 or is that an empty slot?when i powered the amp today i had a low voltage light,would any of these give me that result?The board looks ok not fried but the individual i bought it from claims theres no output sound.I have attached pics,any help would b great

[Perry Babin]

C509 is not installed.

The low voltage light is illuminated when the B+ voltage is too low. Did you measure the DC voltage directly across the B+ and ground terminals?

As far as I know, none of those components could cause the low voltage LED to light up?

[klangston76]

no i just measured the + lug of amp to the battery and it read around 14 volts,would the other components affect outout sound?He had said he hooked the speakers up wrong

[klangston76]

I was just out in the building with a car battery and a charger hooked on it to see if it would power up,so could be why voltage was low

[klangston76]

Before i forget thank you for helping me troubleshoot,its much appreciated

[Perry Babin]

You'll have to put a meter on it to know for sure.

[klangston76]

I will meter it again tomorrow on the voltage.is there any particular place I should look and test for the output for sound from that amp?if so can I use a multimeter?that's really all I have?

[Perry Babin]

Yes.

[ultra]

in the last pic you posted, the two 2200/25V electrolytics closer to the transformer, seem to be in bad condition.

[Perry Babin]

I didn't notice earlier but it appears that some of the windings on the power transformer are darkened and may have some enamel missing. Is it due to the lighting or are the windings darkened?