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Old 5th July 2011, 09:13 PM   #1
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Default JL 500/1 Schematic

I have a JL 500/1 that I bought to repair, I thought it was just the MOSFETS but it looks like the resistors are trashed as well. I brought it to a repair shop instead and they said they would fix it for $80 if I could find a schematic for it and the part numbers for the resistors as they are damaged and unreadable. Does anyone know where I can find a schematic? Anyone do side jobs and want to repair this thing?
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Old 5th July 2011, 11:58 PM   #2
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It is a JL 500/1 REV3
I think I need part numbers for
Possibly R654 and D600
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Old 6th July 2011, 12:02 AM   #3
timwebb is offline timwebb  United States
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what transistors are in the power supply?
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Old 6th July 2011, 03:19 AM   #4
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Old 6th July 2011, 03:27 AM   #5
RiLoWa is offline RiLoWa  United States
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Location: Illinois
If your Rev.3 board looks like this then
Use IRFZ44PBF for Q600 - Q607 like these 844-IRFZ44PBF but you can get them elsewhere.
Use 47 Ohm, .25W, 1% SMT 1206 size resistors like these 652-CR1206FX-47R0ELF but you can get them elsewhere.
For Q608-Q611 follow this link jl 500/1 SMD transistors
I have not had to replace R654 or a D600 are you sure they are defective or are they missing?
Attached Images
File Type: jpg Gate Resistors.jpg (399.0 KB, 196 views)
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 6. A big hammer
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