JL Slash 500 v1 Help - Page 6

RiLoWa · 23rd December 2011, 02:02 AM

Slow down and don't get ahead of Perry's direction. There are several things that you needed to check BEFORE you put in the IRF540's, some he has already told you and some he will. These JL amps can be a pain in the rear if you're impatient.

Q504 - Q507 are the outputs, IRF540's. If you have them installed, you should carefully remove them to continue on.

Once removed, recheck all the IRF540's ensuring they are still good. Visual inspection is of no use, use your meter.

Look closely for solder bridges where you have done some soldering work, use your meter to verify there are no shorts everywhere you have been.

Then go back and answer post #46.

jeanious2011 · 28th December 2011, 12:58 AM

Hell I have the same problem. My 500/1 turns green when powered up but absolutly no audio output. Mine has absolutly no burnt resistors or transistors, I think it might be the power supply. How can I check it or the rail voltage?

Perry Babin · 28th December 2011, 03:37 AM

Start a new thread.

23rd December 2011, 02:02 AM	#51
RiLoWa diyAudio Member Join Date: Aug 2010 Location: Illinois	Slow down and don't get ahead of Perry's direction. There are several things that you needed to check BEFORE you put in the IRF540's, some he has already told you and some he will. These JL amps can be a pain in the rear if you're impatient. Q504 - Q507 are the outputs, IRF540's. If you have them installed, you should carefully remove them to continue on. Once removed, recheck all the IRF540's ensuring they are still good. Visual inspection is of no use, use your meter. Look closely for solder bridges where you have done some soldering work, use your meter to verify there are no shorts everywhere you have been. Then go back and answer post #46. __________________ Tools - 1. TPI Scope Plus 440 2. B&K 2125 20MHz Dual Trace 3. Sorensen DCR20-50B 4. B&K 4011 5MHz Function Generator 5. Weller WESD51

28th December 2011, 03:37 AM	#53
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Start a new thread. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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28th December 2011, 12:58 AM	#52
jeanious2011 diyAudio Member Join Date: Nov 2010 Location: Texas	Hell I have the same problem. My 500/1 turns green when powered up but absolutly no audio output. Mine has absolutly no burnt resistors or transistors, I think it might be the power supply. How can I check it or the rail voltage?

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