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Re: No sound from sterio when engine is reved.
This sounds like you have a problem with the voltage regulator in your car. Normally it is part of the alternator. Does your lights on the inside and outside of car get dim when the engine is idle, and do they get brighter when you rev the engine? Does your battery gage go way down when the engine is idle and then go way up when the engine is revved up? These are all signs that the regulator is not working.
The radio will only operate normal at the proper voltage, if your voltage regulator is putting out too much voltage when the car is revving, it can make the radio malfunction.
Have the alternator/regulator in your car checked. It may just be that part needs to be replaced.
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1. The display (located by heater controls) 2. The tuner (located under dash, above and to the right of the accelerator pedal 3. The EQ on some models and tape deck on others (located in center of dash)
Radio should work with tuner and display minimum If the tuner is gone you are better off going aftermarket
it means the radio code has been inputed incorrectly three times you need to disconnect the mains from the rear of the sterio for 30seconds to reset the memory then leave the sterio on till the error message turns into the - - - - where you input the code again.
check your speaker wire, sounds like the insulation is cut somewhere and thewire is grounding out. that is why the crackling and low sound. your speaker wire is grounding out or wire is broken, start at the speaker and follow wire to find the break
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
It sounds like you have a newer portable minidisc player, and an older deck. There were several upgrades over the years for ATRAC files, and some of the newer recording formats are not compatible with older players.