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-   -   orion xtr 1000 (http://www.diyaudio.com/forums/car-audio/226355-orion-xtr-1000-a.html)

timwebb 24th December 2012 02:22 PM

orion xtr 1000
 
im working on one of these and. im getting no output from the amp. i found im getting 8.59 which suppose to be negative. on the ground pin on all the opamps.

brandes.cm 24th December 2012 03:24 PM

So you are getting +8.59Vdc on the negative supply pin of the op-amps? Are any op-amps getting warmer than the rest?

timwebb 24th December 2012 04:39 PM

a few are warm. they are all surface mount.

brandes.cm 24th December 2012 06:28 PM

Lift the negative supply pin on those one at a time. See if your voltage returns to normal.

ultra 24th December 2012 07:51 PM

excellent
 
Quote:

Originally Posted by brandes.cm (Post 3298053)
Lift the negative supply pin on those one at a time. See if your voltage returns to normal.

Very nice, i use the same technique.

Perry Babin 24th December 2012 09:33 PM

Either the negative regulator has failed or something connecting the negative regulator to the op-amps has opened. There may be a shorted op-amp as well so when you repair the regulator, be careful when powering it up.

Post a photo of the inside the amp.

timwebb 25th December 2012 05:50 AM

1 Attachment(s)
i lifted the pins now i get 25v at the ground for the opamps

Perry Babin 25th December 2012 11:57 AM

Do you have negative input and output voltage on IC722 and IC732?

Isn't this an XTR 10001?

timwebb 25th December 2012 02:44 PM

yeah it is..had to take the tape off.

timwebb 25th December 2012 03:48 PM

[QUOTE=Perry Babin;3298549]Do you have negative input and output voltage on IC722 and IC732?

both ic's have negitive voltages on it.


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