I know this has probably been discussed 100 times .
But does anyone know of a good replacement for the driver ic for the outputs ?
It’s labeled ABLETEC.COM. 436P
But does anyone know of a good replacement for the driver ic for the outputs ?
It’s labeled ABLETEC.COM. 436P
I wouldn't repair them but some do. The ICs are $30 from PacParts.
The generic IC part number is IRS20956. It appears to be a custom IC.
The generic IC part number is IRS20956. It appears to be a custom IC.
The outputs are blown in the amp so my guess is the ic is also defective .
No sense of ordering outputs for the amp just to find out the ic is defective
No sense of ordering outputs for the amp just to find out the ic is defective
You may be able to get an idea of whether it's damaged (likely) or not by measuring across the 3 terminals for each output (like you would for the 21844). If any read a low value (FETs out of circuit), you know it's defective.
I've done 9 of these amps this year (it's been a cheap way to learn, when I'm ready to work on someone else's gear I'll likely never touch 'em again.) When the outputs go it's almost certain that the IC has failed as well from what I've seen. I think I had one where the chip survived.
The only reliable source for that part is PacParts and maybe Encompass (I've never used them.) I've read mixed results on people using a chip from China with the same number, I wouldn't chance it personally.
The only reliable source for that part is PacParts and maybe Encompass (I've never used them.) I've read mixed results on people using a chip from China with the same number, I wouldn't chance it personally.