Question about Kenwood KDC-MP7028 CD Player
Unit powers up, teh display is fully functional, but the attenuator light is constantly lit. Pressing the ATT button puts "ATT" in the display, pressing ATT again removes the "ATT" display, but the LED stays lit and I don't get any sound.
That light that stays on is not for the "ATT", it is just an indication that the unit has power. The problem with your radio is most likely the power amp IC inside the radio if you are using speakers connected directly to the radio from the speaker wires on the harness. If you are using an external amplifier for your speakers the problem will be either the electronic volume control IC or a muting transistor that has gone bad or the external amplifier is defective. There is no way to know exactly what is wrong without doing a few checks on the radio with a multimeter on have the radio on a work bench to be able to open it up and check a couple of things inside of it.
If you have a multimeter and a power supply (to turn the radio on while on a work bench) I can guide you thru the troubleshooting process to help you figure it out. But you will also need to have a soldering iron, solder, and solder wick to be able to remove the bad part and put in a new part.
Let me know if you will require any more help from me.
Posted on Nov 12, 2008
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Posted on Jan 02, 2017
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