Need JL Audio Part 300/4

Tom7227 · 16th January 2012, 03:30 PM

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.

Tom7227 · 17th January 2012, 01:35 AM

Never mind, Perry Babin came thru with a part number

He so smart

asinclado · 11th February 2012, 12:57 AM

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.

Perry Babin · 11th February 2012, 07:05 AM

He was asking about the part N09. It's an LMV431.

asinclado · 11th February 2012, 11:24 PM

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

Perry Babin · 12th February 2012, 11:48 AM

What part on the driver board are you asking about (specifically)?

asinclado · 28th February 2012, 10:37 PM

i thought there was a part number for the whole board

asinclado · 28th February 2012, 11:23 PM

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

Perry Babin · 29th February 2012, 12:43 AM

You won't find any JL schematic diagrams.

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

16th January 2012, 03:30 PM	#1
Tom7227 diyAudio Member Join Date: Dec 2006 Location: Buffalo	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.

11th February 2012, 07:05 AM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	He was asking about the part N09. It's an LMV431. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

12th February 2012, 11:48 AM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	What part on the driver board are you asking about (specifically)? __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

29th February 2012, 12:43 AM	#9
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	You won't find any JL schematic diagrams. Desolder and resolder all of the solder connections on the large resistors marked 473. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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17th January 2012, 01:35 AM	#2
Tom7227 diyAudio Member Join Date: Dec 2006 Location: Buffalo	Never mind, Perry Babin came thru with a part number He so smart

11th February 2012, 12:57 AM	#3
asinclado diyAudio Member Join Date: Feb 2012	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.

11th February 2012, 11:24 PM	#5
asinclado diyAudio Member Join Date: Feb 2012	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

28th February 2012, 10:37 PM	#7
asinclado diyAudio Member Join Date: Feb 2012	i thought there was a part number for the whole board

28th February 2012, 11:23 PM	#8
asinclado diyAudio Member Join Date: Feb 2012	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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