Question about Kenwood KDC-MP435U CD Player
WONT GO ON SAYS,PROTECT?
One of your speaker wires to the internal amp is shorted. turn power off and make sure they are not touching metal or each other and then hit reset again. if this doesn't help your power ic may be fried inside the stereo or a speaker is shorted.
Posted on Jan 09, 2009
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Posted on Jan 02, 2017
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Sep 06, 2017 | Kenwood Car Audio & Video
"Protect" is an error code for short and overload. Once the power applied to the unit and shorts sensed by the processor the unit will automatically turned to "protect" to avoid further damaged to other parts. Most shorts is in the supply voltage (B+, Vcc) line and most common caused is the sound output IC (mounted in heat sink). This part is responsible for amplifying the audio from the pre-amplifier stage and will feed to your speakers.
If you have a knowledge in disoldering and soldering technique, I would advice you to pull-out this part and then try the unit. If the protect error code is gone then you must replaced this IC with a new one to back your unit in normal operation again.
Before that, disconnect first the speakers from the unit and play it naked. If the symptoms remain the same then obviously the fault was came from the unit itself.
Hope I helped you.
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