Turned on truck. radio came on then went off and havent been able to get it back on. checked fuses and dont see any blown. cd is stuck in the unit itself as well. security red light is flashing when i remove faceplate though. so unsure of problem.

SOURCE: Dead Kenwood KDC-128 CD Player Is there a "reset"

KENWOOD MADE TWO DIFFERENT EDITION FOR THIS AND SOME OTHER MODELS. YOUR WILL NEED TO CHECK THE SERIAL NUMBER AND YOU CAN CHECK WITH PACPARTS AT pacparts.com THEY WILL GET THE RIGHT ONE FOR YOU

Consumer Electronic Parts and Accessories at PacParts...

pacparts.com

Distributor of consumer electronics...

SOURCE: display

try this

KENWOOD SECURITY CODE CLEAR procedure


Your radio will require one of the following procedures.

Type 1
During the code request mode, while holding the DISP key depressed, press and hold the Volume UP or DOWN key for 3 seconds (so that “…” disappears).
Then using your remote enter your code.

Type 2
Press the "Auto" button and "Track up" on face of radio at the same time. The four dash lines ( . . . . ) should "disappear".

Then using your remote enter your code.

Type 3
Model# DPX-4020 and DPX-4030
Press and hold the 1 then the 6 preset key (preset keys are the buttons on face of radio for storing you "favorite" radio stations). "C" should display.
Then using your remote, enter your code.


Enter your number from the remote control unit. Your code number is 5227 (KCAR)

* Press numeric key “5” ( 2 times ) and press the Track UP/Next Track key
* Press numeric key “2” ( 3 times ) and press the Track UP/Next Track key
* Press numeric key “2” ( 1 time ) and press the Track UP/Next Track key
* Press numeric key “7” ( 2 times ) and press the Track UP/Next Track key

The security is canceled and the set enters the TUNER mode!

SOURCE: Kenwood KDC-119 car stereo problem

There is a small hole at the bottom of the stereo face that will reset the system. I pushed a pen tip into the hole and it turned the stereo off. When I removed the pen, the system turned on and the CD ejected. Problem solved.

SOURCE: kenwood kdc-mp232 not turning on

check your connections. i believe only the standby wire is connected.. or the built in amplifier detects a short on the speaker wires.

SOURCE: Help! My CD is stuck and receiver will not power up!

It sounds like the head unit is going bad. If the CD is not that important to you dont worry about it. Also you may want to check the fuses behind the head unit. Also make sure the 12 V+ Memory backup, ground, and Ignition Wires are hooked up correctly. Well, the ignition probably is, but you never know.
I hope this is helpful!