C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

C4 Delco Bose Problem

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Old Oct 28, 2010 | 06:31 PM
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dlee425
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From: Kissimmee Florida
Default C4 Delco Bose Problem

Does anyone have a schematic for the delco bose speakers in the 86 vette ?
Changed all the caps and no audio. Acts like a mute is on..

Thanks,
Donnie
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Old Oct 28, 2010 | 11:40 PM
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No sound from any speakers or just one?
I tried finding a schematic to identify a bad resistor in our 86 a year ago and never found one. The old one was burned beyond reading the color of the stripes.
If none of the speakers work it is the relay under the passenger side dash.
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Old Oct 29, 2010 | 05:28 PM
  #3  
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dlee425
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Originally Posted by megtom2
No sound from any speakers or just one?
I tried finding a schematic to identify a bad resistor in our 86 a year ago and never found one. The old one was burned beyond reading the color of the stripes.
If none of the speakers work it is the relay under the passenger side dash.
Only one speaker works out of 4. I can take the other 3 and hook to the line of the one that does work and they have no signal. I do know the amp section works as i can pass tone through it. Just no signal through the bose chips. Seems like the chip has a mute. I have replaced the electro caps also..
Well I took the bose chip out of the good amp and put them in the bad amp and still no sound. Checked all the transistors. So its got to be a poly cap or a resistor.. Any Thoughts..

Last edited by dlee425; Oct 30, 2010 at 01:45 PM.
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Old Oct 30, 2010 | 10:45 PM
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PM me your email address and on monday (11-1) I will email you the schematic of the amplifiers and their parts list.
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