Re: Crest repair center needed
Hi Alan,
So, I was able to get a few minutes of time from the guys in engineering and showed them the photo you shared on this forum. They looked at it, figured out what part of the board it was on and then informed me of the following:
That particular trace is part of the startup circuit for the amplifier. It is only supposed to be on for a very short period of time with very low current. Having it on long enough to burn up off the board like that is indicative that there is something else wrong. For some reason the startup circuit is possibly staying on all the time... an undesirable condition and not what it is supposed to be doing. There are likely some resistors in some related circuitry that are burnt, but they would have to look at it to figure out what is up with this.
After learning about this I passed this photo and problem description around the actual repair techs who fix the amplifiers that people send in for repair. No one could recall seeing anything like this in the past. However, they seemed confident that if the amplifier were sent here for repair, they would be able to repair it and return it to you in fully operational condition.
So, I would encourage you, if you have problems with your amplifiers blowing up again, send them in to the factory for repair. When these amplifiers are purchased, they have a FIVE year warranty.
See, I didn't forget about you, even though I'm sure you thought I was going to allow this to slide into oblivion...
I don't know why you are having such a problem with these amplifiers, it seems like this is a particular failure that is extremely uncommon. It is especially uncommon when you consider that the particular issue you have outlined for us in this thread has absolutely nothing to do with operating the amplifiers bridged into a 4 ohm load.
