Player comes on, CD plays, radio plays, well it looks like it is, but no sound coming out, at all, on full volume, was going fine for years, all fuses ok, any ideas?

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: Aux in runs only back speakers and no volume control

To use the AUX, you need to buy a special cable that plugs into the little blue connector on the back of the unit. The cable has a special multi-pin connector on one end and RCA's on the other. Search Pioneer CD-RB10 to find one. Ebay has knockoffs cheap. I just got one and it works great.

SOURCE: i recently hooked up my pioneer cd player in my

Hi:) Sound like the pre-amplifier transistors are burnt out if you hear no sound at all. If you can hear a very fate sound then it would be the Output amplifier IC's. If you are using a separate output amp check the amp.

SOURCE: frmtread error

how can it solved?? My old mp3's work perfect, now i made a new mp3 cd on the 700 MB space, but it doesnt work anymore.. i get ERROR 23 on my display.. what to do??