JL 500/1 rectifier replacment? - diyAudio
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Old 18th July 2011, 12:06 AM   #1
Klez is offline Klez  United States
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Default JL 500/1 rectifier replacment?

This is my first dive into car audio repair and I have searched the forum for quite a while, but could not find my answer.

JL 500/1 (D600)
It's listed:
T408
SFI606G

I have not found anything that crosses with this.

Thanks for any help
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Old 18th July 2011, 12:42 AM   #2
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Location: Louisiana
The MUR1620CT will work.

These rarely fail. Are you sure that it's defective?
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Old 18th July 2011, 04:36 PM   #3
Klez is offline Klez  United States
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When I got it Q607 and Q606 were burnt. The other 6 Z44s were shorted to ground on two legs and the rectifier was shorted to ground on all 3 legs. After I removed all the Z44s the same two legs were shorted (at the pads) until I removed the rectifier. Now the pads at the rectifier only show ground on the outer pins and not the center (+) pin.

This is my first time so I am not 100% sure on anything.

Thanks for the reference part.

If you think I am going in the wrong direction let me know.

Thanks again!
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Old 18th July 2011, 07:29 PM   #4
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Did you check the output transistors?

Did you check the diode out of the circuit?

You'll have to replace all 8 power supply FETs and likely all of the 47 ohm gate resistors for the power supply FETs.
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Old 18th July 2011, 08:09 PM   #5
Klez is offline Klez  United States
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Yes all 4 checked out fine.

I don't know where that is located

All resistors checked out within tolerance.

Sorry this is my first amp repair
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Old 19th July 2011, 12:27 AM   #6
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I was referring to the rectifier diode that you believe to be shorted.
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Old 20th July 2011, 01:32 AM   #7
Klez is offline Klez  United States
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I have no voltage there.
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Old 20th July 2011, 07:37 AM   #8
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You would remove it from the circuit and check it.
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Old 21st July 2011, 08:05 PM   #9
Klez is offline Klez  United States
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Still no voltage.
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Old 21st July 2011, 09:51 PM   #10
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With the rectifier out of the circuit, does the rectifier still appear to be shorted?
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