I've got a Sony car cd player model number CDX-GT40W with seven diferent display color options. The problem is that only the display changes colors; I want the buttons and volume knob color to change too. I havn't opened the faceplate up yet. Any ideas as far as color changing leds, etc would be appreciated...
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I had the same problem with my sony CDX-GT540UI and solved it! I just kept clicking the "source/off" button when the display was showing the demo and suddenly it started switching to USB/CD/AUX etc. This means that the contacts inside the micro-switch were stuck in the down position, continuously making contact, and blocking the signals from the other buttons. Have to replace the micro-switch now.
It is more then likely your faceplate has become non functional, and if so the cd player is almost none functional. If you can remove the faceplate try cleaning the connections that clip into the cd player. But by the sounds of it, your face plate is die'ing out on you. Sorry
IF you need any more help just ask.
The sub outputs are simply lowpass filtered preamp outputs for use with a subwoofer amplifier. They supply a lowpass filtered signal for a subamp or 'powered subwoofer" like a bazooka tube. Test your "basstube" for 12 volt input power and make sure the "sub" setting on the radio is turned up too.
Your display lights are burnt out. This is a common problem. It is covered under warranty. Send it to Sony for service.
Anyway, under the Sony faceplate there are two small, different colored leds which control the color. The light is aparently transfered through pieces of clear plastic (best example I can think of is the piece of plastic over the led in a household smoke alram)to most of the buttons and the backlighting. If your display has burnt out you may just be able to swap the leds for new ones. As for the intermittent green could it just be a faulty solder on the board.