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Audio Systems/92 chevy delco radio problem

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Expert: - 12/18/2007


Question
A friend has a 92 chevy truck and the 3 piece radio quit working. Not sure why. I'm an electronic tech by trade and gave it a look. The control unit has 12v at the input harness on the piggy back board. I followed the 12v path past the harness and it is on the card. No voltage at any ICs or components. Pushing the power switch on/off has no effect. Any ideas where to begin? Thanks Steve.

Answer
ok the amplifier tuner pack close to the accelerator pedal is the most important unit   there needs to be 2 power 12 volts
one always on constant  and the other on only when the key is on the ignition

check both fuse box one fuse is mark radio the other is backup
or batt   if they are ok and you have 2 powers  
the amplifier is defective,    small square unit on top near ac controls never goes bad
the eq tape  goes bad but you only lose audio
the unit on top needs to show at least the time if not there is no power

good luck

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Ernesto R

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Please year and model of the vehicle i need all the details I'am a car electronics installer with 23 years of experience. I'am very familiar with installations of in-dash head units,factory head units, factory car audio, hands-free phone kits, auxiliary audio inputs and iPod iPhone interface integration and security systems if you need any help with your factory stereo, or how to add auxiliary audio or listen to your ipod android in the vehicle I currently have a MECP Master Installation Technician certification. My answers are based on my experience in vehicles and my knowledge of automotive electronics I don't put much emphasis on brand names; you won't often find me putting down a brand or pushing one on dont send me a list of what brands i like better sorry i can not help you with aftermarket or vehicles that are not in the u.s.a also video and security

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factory car audio
factory cd changer and hands free cell phones
satellite radio
auxiliary audio input ipod interface audio modules

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MECP certified chrysler tech

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