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Re: LCD Screen Out?
COUNTERMEASURE: Re-solder the following components on PCB X34-415: R43, R44, R46, R47, R48, R49, R50, R51, R55, and R57. Ok so if you remove the top of the unit and cd player down the right side you see a line of surface resistors that say 2R7 on them, they all need to be resolders to the bord theres 9 total.
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Im a retired installer so let me talk u thru this. If you can disconnect the power plug from back of unit, pull it out give it a few seconds, plug it back in. U should hear a mech. Noise( that's the CD mech loading. If you don't hear any noise, u probly have a def. Unit. It is also a chance u have a cd already loaded and stuck. If u look carefully u can see a disc in it. The other issue could be a power issue on your yellow wire. Last but not least, not knowing the history, your unit mite be binding. Hope that helps
I also created a tutorial on fixing faceplates with 2R7 resistors (refer to my tip).
But, your unit will have a different chassis, as the faceplate is also a video display.
First you need to determine if the buttons on the faceplate are operating the various functions. If the buttons are NOT operating, then the faceplate itself (or connection to the main unit) can be considered faulty.
It's highly probable that the RIBBON cable (which connects faceplate to the inside of the unit) may be defective - this is common in some Kenwood units.
Try searching Google or youtube for ribbon cable repairs etc.
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.
This is a similar repair, but the resistors you need to reflow solder on ae on the bottom of the circuit board, not the top like the other models. The reference numbers for the resistors are R130, R131, R133, R135, R136, R137, R138, R139, R140, AND R141.
They are 4.7 ohm resistors and should have "4R7" printed on the top of them. They are not as close together as the other model has them, but if you take the board out of the unit you should be able to find them. Put just a touch of solder on both sides of each resistor. This should be plenty to fix this problem.
It is also possible that you may have another cause for this problem, but this is the most likely cause.
I hope this is some help for you. Let me know if you need further instructions.
I am not sure exactly what solution you are reffering to, but the KDC-MP532U has a problem with the display going out that is the result of heat stressed solder on the main board. The surface mount resistors that are located on the right side near the front of the unit, as you look into it with the display facing you, are the culprits. This is common in about 3 or 4 Kenwood models. These surface mount resistors are on the top of the board, so the board doesn't need to be taken out to fix it. Just the CD mech does. The surface mount resistors just need the solder reflowed, an easy enough job if you know how to solder. They are all lined up connected to each other, I don't remember the reference numbers, but if you can recognize what a surface mount resistor looks like, you should be able to find them very easy.
Thanks for the compliment on the other post, it is appreciated. A good rating would also be appreciated.
The problem is not the faceplate for any of you, it is inside the main unit. If you know how to solder, you can fix is very easy. First take the top off the unit, there is 1 screw in the back middle. Then take the CD player out. It has 2 screws holding it in at the front corners at the bottom of the CD deck. Use a number 2 phillips and take out the gold screws holding the CD deck in place. Then you can pull out the CD deck, and be careful not to damage the ribbon cable connected from the CD deck to the main board. The deck can just sit up and over to the left to get it out of the way for what needs to be soldered.
Look inside the main unit on the board and you will see in the front right corner a series of surface mount resistors all connected in series. Just reflow that solder on them with a small amount of new solder added and the display will once again work perfectly. That solder is very heat stressed, that is the problem. I have fixed dozens of these over the last few years. Make sure you put it back together the same as it came apart, and you are done.
Has anyone found a repair for this? My screen just died this morning...I've had it in my car for about 30K miles and I REALLY like the head unit...it's still working fine, but I can't even begin to try to mess with the EQ, or figure out what MP3 I'm going for without the screen :(