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Old 16th January 2012, 03:30 PM   #1
Tom7227 is offline Tom7227  United States
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Smile Need JL Audio Part 300/4

Does anybody have an audio driver PCB for this amp? There are 4 of them in the amp (all the same), perhaps someone has one in the scrap pile.
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Old 17th January 2012, 01:35 AM   #2
Tom7227 is offline Tom7227  United States
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Never mind, Perry Babin came thru with a part number

He so smart
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Old 11th February 2012, 12:57 AM   #3
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hi, my name is marco, and i am having the same problem with one of those boards, do you mind sharing the part number with me? and where did you get the part from? thanks.
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Old 11th February 2012, 07:05 AM   #4
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He was asking about the part N09. It's an LMV431.
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Old 11th February 2012, 11:24 PM   #5
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what about the board? i have the 620 ohm resistor blown and the solder on the transistors around it look like were overheated a little bit, i am replacing the resistor, doing the solders on those 470 bigger resistors on the board, but in the worst case what is the part number for that audio driver board? and where will i be able to get it? right now the resistors are on order and i also got a bunch of output transistors just in case. thanks
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Old 12th February 2012, 11:48 AM   #6
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What part on the driver board are you asking about (specifically)?
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Old 28th February 2012, 10:37 PM   #7
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i thought there was a part number for the whole board
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Old 28th February 2012, 11:23 PM   #8
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the led next to that 621 resistor measures bad to me, when testing the amp, it lit for a few minutes, now it doesn't will that keep the whole channel from working? i saw somewhere someone posted a picture of the diagram for that board but cannot find it any more, where can i find a schematic for this amp? or at least for that board. and is that a regular led or it needs to be an specific part number? sorry for threadjacking, but i figure is a similar problem, i should not need to start a new one.

thanks
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Old 29th February 2012, 12:43 AM   #9
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You won't find any JL schematic diagrams.

Desolder and resolder all of the solder connections on the large resistors marked 473.
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