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Jl Audio 500/1v2 No audio.
Jl Audio 500/1v2 No audio.
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Old 8th November 2018, 02:20 AM   #11
rhempz01 is online now rhempz01  United States
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Location: Milford Delaware
32.8ohm
.4 ohm
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Old 8th November 2018, 02:32 AM   #12
Perry Babin is offline Perry Babin  United States
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Do you have 12v on the drain of that FET?

Do you see any sort of drive signal on the gate of that FET?
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Old 8th November 2018, 03:08 AM   #13
rhempz01 is online now rhempz01  United States
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12.9vdc on drain and no drive on the gate, just .502vdc

Last edited by rhempz01; 8th November 2018 at 03:16 AM.
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Old 8th November 2018, 08:46 AM   #14
Perry Babin is offline Perry Babin  United States
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Post the DC voltage on the pins of the 10 pin header using the numbering shown below.
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File Type: jpg jlaudio500slashone10pinconnector01.jpg (155.8 KB, 15 views)
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Old 8th November 2018, 06:31 PM   #15
rhempz01 is online now rhempz01  United States
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1) 5.004v
2) .045v
3) 12.94v
4) 5.96v
5) 12.93v
6) 11.95v
7) 0.00v
8) 11.73v
9) 11.55v
10) 0.00v
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Old 8th November 2018, 06:43 PM   #16
Perry Babin is offline Perry Babin  United States
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Other than 2 and 7, those look OK. I think 2 is just for the power LED. 7 is the -15v for muting but that won't be there if the low-voltage supply isn't working.

Is the power LED lit?

It looked like the main supply was operating since it had 80v. Is the main supply operating?
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Old 8th November 2018, 08:38 PM   #17
rhempz01 is online now rhempz01  United States
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Yes power led is lit green, and the main supply is running.
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Old 8th November 2018, 11:05 PM   #18
Perry Babin is offline Perry Babin  United States
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What is the DC voltage on all 3 legs of the 5v regulator (U601)?
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Old 8th November 2018, 11:27 PM   #19
rhempz01 is online now rhempz01  United States
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Leg 1 12v
Center 0.0v
Leg 3 5.02vdc
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Old 8th November 2018, 11:44 PM   #20
Perry Babin is offline Perry Babin  United States
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What's the DC voltage on the resistor terminal highlighted below?
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