MX5 MK2 reg 2000. Sony CDX-C4850R CD/Radio cuts out after a short time, but the speakers are still humming. If I remove/replace the face plate and turn it on again, it works again for a while.

SOURCE: The radio plays the CD but the faceplate is dead

it sounds as if your i/o relay for the control face is toasted and part of the relay is welded and carboned. you will need to replace it or chances if this burnt therre may be more behind this such as the amp if equiped. gl

SOURCE: no sound

you simply have a speaker shorting in your car. Either an old speaker with a bad voice coil (short) or a speaker who's contact(s) are touching metal. This type of short or grounding will cause the internal audio amplifier to shut off to protect the radio's output circuit. To diagnose which speaker is the culprit, you'll need to disconnect all speaker leads from the radio and one by one re-connect them until the output shuts down again. The safe way to check is with a voltmeter. If you connect one side of your voltmeter to ground and test each speaker wire lead for continuity, you'll hear an audible "beep" whe you find the grounded wire/contact. A professional car audio shop can diagnose this for you if you're still having difficulty. Hope this information was helpful.

SOURCE: CDX-S2000 Volume, Source, and Mode buttons not working????

Hey jshaff, try taking off the detachable front, and you will see a reset button, press and hold in for 10 secs, this should solve your problem. if it doesn't work first time keep trying. you must have power to the head unit for this to work. you will hear the cd make a noise and that should be that, try and let me know.

SOURCE: sony cdx r3300 Won't play...simply scrolls a message

_half fixed, use the remote -@least can get more life outa the unit!

SOURCE: Sony CDX-4000R not receiving radio signal. CD

I just need to know what wire goes on what pin on the back of the set pleaseeeeeeeeeeee