Face plate for jbl Mr4.2 marine radio I see this radio is not being made anymore does anybody have one they would like to sale or will the jbl145 face plate plug right into my Mr4.2 head unit

SOURCE: Dual XD7600 Head Unit Problems

Sounds like the flexible connector that connects to the drop-down front panel is bad, broken pattern lead.

SOURCE: Kenwood KDC-322

If you have the remote control for the unit, or can buy one then you can reset the code. Just ask me how...

SOURCE: Kenwood KDC-X590 Faceplate display problem

Yes, the problem is inside the main unit. I have fixed hundreds of these radios over the years. 
The solder on these resistors get heat stressed and stop conducting properly. They just need a tiny little touch of solder. 
With the radio in front of you and the face is facing you, take the top off and remove the CD mech. The CD mech can just be set over to the left a little and the ribbon cable to it can stay connected. Just move it out of the way gently. You will see a series of resistors in the right front corner area of the main board on top. They have 2R7 printed on them and there are quiite a few, all in that main area. Just resolder them and put it all back together again and the display will work normal.
Dave

SOURCE: Face plate/controller won't light up

As far as i can remember, since the release of the detachable face - pioneer has used the same locking mechanism - basucally a spring loaded hook.
The release keys have not changed, so im pretty sure they use the same design.
Any DIN sized radio will fit in any sleeve.... regardless of manufacture - it is an industry standard. Only the locking mechanisms vary (and even that can be modified to work with the right tools.

I may suggest cleaning the contacts on the faceplate (if its removeable) with an eraser to remove varnishing that may have ocurred over the years.

If you decide to have it repaired, you're looking at about $45.00. May be wise to invest that in a new radio instead with better featured and a warranty.

Thanks for using FixYa - a FixYa rating is appreciated for taking the time to answer your FREE question.

SOURCE: Kenwood KDC-322

Common Kenwood Security Codes
Many Kenwood radios are configured with the same security codes:

KCAR - This seems to be a "backdoor" to some Kenwood models.
3051 - This is the security code which is printed in the manual of many Kenwood models.
1234 - This is a security code commonly chosen by Kenwood owners.
Entering Your Kenwood Security Code
If the car battery fails or is disconnected, the Kenwood will ask for the security code.

The procedure to enter your security code differs on various models of Kenwood car stereos. Here are three of the more common 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 until the "..." display disappears.
Enter the security code using your Kenwood remote.
Type 2
Press the "Auto" button and "Track up" on the face of radio at the same time until the four dash lines disappear.
Enter the security code using your Kenwood remote.
Type 3: Model# DPX-4020 and DPX-4030
Press and hold the 1 then the 6 preset keys until the display shows the letter 'C'.
Enter the security code using your Kenwood remote.
Entering Letters on your Kenwood Remote
To enter a letter using your Kenwood remote, press a button once for the first letter, twice for the second letter, and three times for the third letter -- then press the Track Up or Next Track key to send the letter.

To send the letter 'A', press the 2 key once and then press the Track Up key. To send the letter 'B', press the 2 key twice and then press the Track up key.

Finally, when you are done entering all of the letters, press and hold the Track Up button for 3 seconds.

The key sequence to enter the security code KCAR is:

5
5
Track Up
2
2
2
Track Up
2
Track Up
7
7
Track Up
Your Kenwood should then enter tuner mode.

A Security Code Bug in some Kenwoods
There is a reported bug in the security code handling of some Kenwood stereos. In models with thie bug, the security code is stored incorrectly. The workaround is to enter the wrong security code.

In models with this bug, you have to decrement the third character of the security code by one. If your security code was 1111, you would enter your security code as 1101. If your security code was 9999, you would enter 9989.