Jl 500/1 Gone Bad

**mrhonnesty99** · 07-17-2007, 10:47 AM

To make a long Story short i got to eat it or fix it.
I have Added a picture. What are the odds of this thing working once i replace the damage, assuming that i can find the parts?
ps: the amp powers on without a problem just the outputs are fried.

**binary.h4x** · 07-17-2007, 10:50 AM

I would go ahead and replace those resistors too, while you are at it, they are cheap.

**mrhonnesty99** · 07-17-2007, 11:09 AM

Originally Posted by binary.h4x

I would go ahead and replace those resistors too, while you are at it, they are cheap.

I think they are resistors is that what they are called it has a white # 470. is there any special place i might find these?

**binary.h4x** · 07-17-2007, 11:19 AM

Originally Posted by mrhonnesty99

I think they are resistors is that what they are called it has a white # 470. is there anu special place i might find these?

They are called surface mount resistors.

**mrhonnesty99** · 07-17-2007, 11:24 AM

Originally Posted by binary.h4x

They are called surface mount resistors.

Thanks

**durwood** · 07-17-2007, 11:34 AM

www.digikey.com

Measure it with a mutlimeter but I think it's value might be 470ohm. Make sure the transistors are all the same part# before ordering. Most amps use a complimentary pair and the might not all be IRFZ44N's. make sure you replace all the transistors on the output stage an not just the burned up ones.

Good luck.

EDIT: I forgot it's a classD amp, they might all be the same part number.

**mrhonnesty99** · 07-17-2007, 11:44 AM

I found the parts online and from 2 different placed the tottal was bout $22 max for all the parts including shipping lets hope it works i will keap you posted.

**mbkowns** · 07-17-2007, 11:47 AM

Let me know how it goes i have a JL Audio 300/4 locked in protect mode and it won't come out. Haven't pulled it apart yet but maybe thats whats up...

**mrhonnesty99** · 07-17-2007, 11:48 AM

Originally Posted by durwood

www.digikey.com

Measure it with a mutlimeter but I think it's value might be 470ohm. Make sure the transistors are all the same part# before ordering. Most amps use a complimentary pair and the might not all be IRFZ44N's. make sure you replace all the transistors on the output stage an not just the burned up ones.

Good luck.

EDIT: I forgot it's a classD amp, they might all be the same part number.

I found the 8 burned irfz44n, the new parts # is irfz44npbf . just in case some one got screwed like i did and the surface mount resister are part # CAT10471 from http://www.weisd.com/store2/CAT10471.html

**durwood** · 07-17-2007, 12:05 PM

Originally Posted by mbkowns

Let me know how it goes i have a JL Audio 300/4 locked in protect mode and it won't come out. Haven't pulled it apart yet but maybe thats whats up...

Crack it open and have a look to see what is burned up. The 300/4 will look a bit different and might use different parts since it is a class a/b design instead of Class D.