Quote:
Originally Posted by bgkast
I have the one in my SD that does not work, and a junkyard one that also does not work in the SD. The circuit board of the junkyard one looks fine, no burned patches or bad looking solder joints, but the cruise does not respond at all with either amp in place. Do you think both amps are bad, or do I have another problem?
I would be interested in sending my junkyard amp in if it is the problem. I just have the board, no metal case. It was too hard to get the bracket free at the junkyard.
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I don't know what exactly makes these go bad, the first one I fixed all I had to do was take the lacquer off, and it's worked fine ever since. Another, I had re soldered and it did just as dionysius explained...dying a few months later. I had also seen one that had a blown resister.
Quote:
Originally Posted by Dionysius
I have found the what has caused these to fail in very large numbers is that the electrolytic Capacitor(s) have gone bad. The unit loses its 'memory' because of this.
I do not know which one however since I have no schematic. If you touch all of them with a hot iron they may 'rejuvenate' but the effect may also be temporary.
Talk to me if you want to explore further......This piece of engineering info will help you greatly.
If you can get me a schematic I will locate the problem to a single component. Talk to me. There are a million of these out there all failed with the same problem. Email me with your phone number and I will call you.
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I don't know where to get a schematic as of yet. I haven't seen any around. It would be helpful though. The cap failure makes sense in my head.
Does anybody know where to get a schematic? I may make one if I get really bored, but I don't see myself having that kind of time/patients. It's not a complicated design, just has one fatal flaw.
PM's replied to
I have several on their way to me, let me play with these and I'll take on more business. I'll let everybody know what I find...just give me some time. Like I said before, my experience with this kind of stuff is me playing. I will be starting actual training on this within a few weeks.