JL Audio 1000/1 Repair Thread.

[WHATJUSTHAPPENd 10+ year member]

As promised I'll keep updates of my progress posted if I can.

You'll excuse me if this project takes awhile, i'm taking it a step at a time and i'm very busy.

Day 1. i've mainly just removed covers and those massive sinks. Next on the list is to check all those transistors. All 36+ and the resistors paralleled to them.

Click to read more...

 

[528hz 10+ year member]

This should be pretty neat to see...I take you know what you're doing?

Subscribed.

 

[WHATJUSTHAPPENd 10+ year member]

This should be pretty neat to see...I take you know what you're doing?
Subscribed.

well it's def. going to be a learning experience. right now i'm just checking components for low resistance and such but if i run into bigger repair needs i have a few cheap amps to practice on.

 

[Crimson Boom 10+ year member]

has anyone ever benched one to see what they actually put out?, I'm sure its more than 1k, but not by much

 

[WHATJUSTHAPPENd 10+ year member]

has anyone ever benched one to see what they actually put out?, I'm sure its more than 1k, but not by much

between 12-1400 depending on ohm load. some people claim to get more which is possible. they are a little under-clocked.

the 500/1 puts out a cool 700+. http://www.carsound.com/review_archive/amps/jl_5001.html

 

[528hz 10+ year member]

So...have you fixed amps before, or this your first one?

 

[WHATJUSTHAPPENd 10+ year member]

So...have you fixed amps before, or this your first one?

First one. Everyone feel free to lend me any tips or suggestions.

I'm in diagnostic mode right now. looking for the problem.

 

[mcsoul 10+ year member]

Sub'd for epic win or fial.

 

[WHATJUSTHAPPENd 10+ year member]

Ok first question guys.

I'm studying up on MOSFET transistors since I plan to check them first.

It is my understanding (from most sources) that the gate voltage basically regulates the voltage flowing through the transistor (like a faucet.)

I also see everywhere that these transistors are used to amplify the current going through them but I've found no good explanation as to why this is true.

So how does a transistor effectively amplify a current? It would seem that if the transistor works like a faucet, the voltage across the transistor could only be equal or less than the original voltage.

Please feel free to tell me if I'm completely off base. Remember, this is a learning experience for me.

 

[WHATJUSTHAPPENd 10+ year member]

On a side note, I contacted JL audio tech support.

They will not provide schematic diagrams for the amp but they do repair un-serialed amps.

The repair of the amp costs a flat fee of $180 and a re-serial fee of $50.

If they cannot repair it they will replace it.

While this seems fairly reasonable depending on the price of shipping, I would still like to see if i can discover the amp's problem myself.

 

[grimreper912003 5,000+ posts]

On a side note, I contacted JL audio tech support.
They will not provide schematic diagrams for the amp but they do repair un-serialed amps.

The repair of the amp costs a flat fee of $180 and a re-serial fee of $50.

If they cannot repair it they will replace it.

While this seems fairly reasonable depending on the price of shipping, I would still like to see if i can discover the amp's problem myself.

I wouldnt... Id rather send it and get a new one. Maybe practice on something smaller/ worth less. If you wanted to the JL could pull some good money, but not if you **** it up beyond JL touching it.

 

[PIITB Wut Wut 10+ year member]

I wouldnt... Id rather send it and get a new one. Maybe practice on something smaller/ worth less. If you wanted to the JL could pull some good money, but not if you **** it up beyond JL touching it.

THIS

buy a blown crunch amp here or soemthing

 

[WHATJUSTHAPPENd 10+ year member]

That may be the best thing for me to do. I guess 250 some bucks is not too steep for getting a like new repair, I did forget to ask if they give a warranty on the repair.

As far as practice, I do have an old POS sony 2 channel amp i got from like autozone. I could always hook that up to a .5 ohm load. lol