JL RD1000/1

[miniman82]

Finally got my hands on a broken RD1000/1, and it’s a pretty cool amp. Much more basic than the older slash series stuff, and makes use of more modern higher power chips and FETs. Love the die cast case too.

The power supply FETs, gate resistors and BJT drivers were smoked but the 494 still makes gate pulses, so I ordered that stuff and it’ll be here next week. What I’m having trouble understanding is the output stage.

Looks like IRFB4410Z FET pairs being driven by IR2101 drivers, but it doesn’t appear to be wired like I’d expected. Can anyone confirm that’s what the drivers really are, so I know I’ve pulled the correct data sheet? It’s U12 in the picture.

 

[Perry Babin]

MAybe:
HIP2101IBZT Intersil - Gate Drivers - Distributors, Price Comparison, and Datasheets | Octopart component search

 

[miniman82]

Yes, that one makes a lot more sense. Now I’m glad I asked, I nearly ordered the other part lol. I’ll pick up a few, the old one shorted high so that’s undoubtedly what took out the amp. Only thing in the power path that survived was the rectifiers, I guess when they go down they go down hard.

 

[iliketheboom75]

Have 2 of these amps. No output on sound. 1 listed on ebay as non working.

https://www.ebay.com/itm/2755136654...Mrr3og7SWa&var=&widget_ver=artemis&media=COPY

Looking to get my other one repaired.

 

[Perry Babin]

Please don't post in a repair thread that was started by someone else unless you are trying to help them.

Start a new thread if you need help with a repair of your own.

If you think this thread is relevant, include a link to it in the original post of your new thread.

 

[miniman82]

I invited him, you have PM.

 

[Perry Babin]

I had no PMs.

 

[miniman82]

#4 does