My receiver powers on, all displays are working properly, but no sound is produced.
I have tried connecting several different aux inputs such as the CD, video 1, 2 and 3, and the tape input. None produced sounds. I opened the casing to check for loose connections and broken fuses, everything is is connected with no blown fuses.
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sounds like amp has burned out, disassemble and check for blown fuses. "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
You can prove the sub pre-output works by running an RCA cable from it to the input of a tape deck, TV or any other device that accepts Line In and will either display it or play it. Test it on VERY LOW volume at the receiving device.
There is a good chance that your car has a factory amplified system, it may say premium on the speaker covers if it does. Check to see if you hooked up the bue and blue white wires in the adaptor harness. The blue wires in the adaptor harnesses are to turn on the factory amp.
This condition, may be produced by defective components (Q506, Q507). you can remove those transistor, replace the fuses, power-on and wait for relays click. if the fuses not blown again, them replace both transistor.
the speakers hook to speaker wires not to any thing else no power no negative poles do you have a remote shut off switch connected to amp this would be important to cut off amp
when cut off amp if you still here the humming this can be an indicator of low power being produced by alternator alternators produce 14 anything below 12 would mean replacement of alternator
if alternator fine then you need to find new ground for amp and make sure you have a good ground for sterio this can be checked with a test light
to check a ground all you do is hook gator clip to power then touch test light end to ground on radio end light comes on got a good ground (make sure not to touch any other sterio wires just the ground wire while connected to power to check grounds)
if pulsing in test light on the ground means you have a bad ground
just disconnect move to better ground
check the amp ground the same way as decribed above