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Old 29th March 2004, 02:50 AM   #1
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Cool Fisher model ca-854

I have a problem with this amp the audio output transistors were blown so I replaced them.now im popping fuses.I got in a hurry and took them all out at once and now im not sure I put them back in there right location thats what happens when you get in a hurry.Now I need the schematic to be absolutely sure of there location Ive tested the other components in the sys. and cant find anything bad so this is my only guessis that i goofed.any help would be appreciated.
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Old 29th March 2004, 06:38 AM   #2
subwo1 is offline subwo1  United States
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Hello. One thing to be sure of is that the collectors of your output transistors end up on the proper polarity power rail. The PNP collector, the middle lead, needs to go to the negative rail while the NPN collector, also the middle lead, needs to connecto to the + rail. The new parts have probalby been destroyed if that is the problem. However, your driver transistors may originally have been blown also, possiblly causing a repeat failure.

fee based schematics

I could not find free online schematic sources.
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Old 29th March 2004, 10:40 AM   #3
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Cool Fisher model ca-854

I saw this sight they dont have anything on this model.A couple of the other sites have a schematic but they were like 30.00 and I didnt want to keep putting money into this thing.I thought I might luck up and someone have a schematic they could email me a copy of.I think Ill wait it out a bit to see and if all else fails Ill try to purchase one.Just knowing about the transistors should help determine if they are right but I dont know yet.Thanks for the reply.
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