Keeps shutting down, like a circuit protector

SOURCE: NO memory in kenwood kdc-mp205

check your wiring in your vehicle to make sure that the yellow wire from the stereo gets "constant" power. It it what keeps your stereo's memory, and powers the audio amp in the stereo. If this wire is loosing power when you shut the key off in your car, you will loose all of your settings...bass, treble, tuner, clock, and also where you left off on your CD.

SOURCE: Playing CD-RW audio CDs on Kenwood DP-J2070

try to play a song from original cds.
maybe you brunt it in mp3 file, or its a different format. try to burn your song to cd-r.
if still, try to use nero to burner..
if it wont play your original cds and burnt cds,then the optical lens or the board is broken.
hope I helped you.

SOURCE: installing kenwood cd player in EF ford falcon

this is not a sales pitch but i purchased the correct patch harnass from pmr, it should be available at any good sterio store for about $10

SOURCE: kenwood vr 357 surround system stand ny light

This means there is a problem with the system it is in the protect mode it will not come out of that mode untill repairs are made. More than likley the power amp is blown.

SOURCE: Receiver does not recognize AM/FM signal.

the FM/AM signal has separate inputs ,One RCA input for FM and AM as Speakers connectors. And
diferent arials cables, so if anyone doesnt receive signal or too low signal.
This a tipical Internal Tuner malfunction, needs to be repaired, or checked, by specialized tecnician.