Question about Kenwood DPX-501 CD Player

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Kenwood dpx-501 i have a kenwood dpx-501 in my car and the main display won't turn on. it plays and the lights for the buttons work just fine. thanks.

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  • scott0825 Aug 18, 2008

    Add me to the list of DPX-501 owners who has just experienced a complete LCD blackout. I just ordered the LCD replacement part (part # 3-BT-235INK - $30.99 plus shipping). I hope that it comes with easy to install instructions and that this solves the problem. I think Kenwood should own up to this since it seems to be systemic to this unit and offer the part for free. But we all know that the likelihood of that happening is slim to none.

  • raynsherri70 Sep 27, 2008

    Same problem, display does not work but the rest does. I'm a little skeptical about replacing the lcd panel as my display actually came back for about a week and then went out again. I think it might just be time to replace.

  • Marbuye Oct 03, 2008

    Justg happened to me today :(

  • Anonymous Oct 14, 2008

    Same problem!!! LCD just went out!!!

  • william833 Dec 04, 2008

    Same problem. Fist I thought maybe just my bad luck. Bought another unit since I had all the wiring done and after one year blank again. I called kenwood when the first one died about a year ago, no help. This time I found this site. I guess I will buy a new LCD thanks to this list.

  • lbz_2002 Jan 07, 2009

    I have the same problem with my DPX-501, after aout a year the display went out but everything works fine. i have called Kenwood and they say they have never heard about it, I think they are full of it and should man up to there problems. Has anyone found a solution or should I just go with a new company and say screw kenwood?

  • pdcwiest Jan 11, 2009

    Same problem, seems to be cold weather related maybe??

  • jmbr33231 Jan 13, 2009

    Display stopped working after unit being switched off. Back lights etc still work, and player still works perfectly. Just can't see display



    Whiskeymanuk

  • Anonymous Feb 24, 2009

    Everything works, but the display quit working. I like the radio, but this was a pretty odd problem. I would think that the CD player would stop working before the display did. Sucks.

  • Anonymous Mar 19, 2009

    Everything works except the display. I have never had a problem with any car radio even when they were older. I thought Kenwood was a Top product but now it seems that it isn't!!!

  • Anonymous Apr 14, 2009

    I have the same problem

  • animegaud Apr 25, 2009

    Main display will not come on, otherwise works fine, volume works, changing sources works, CD changer and radio, everything works, just the front monitor display is out.

  • pempek Apr 27, 2009

    i had the same problem with my similar model dpx mp 2090U .No display. Repaired twice at kenwood service center. But the problem might came again. What is the exact problem? Please help.

  • five000 Apr 28, 2009

    Add me to the list of the poor saps that got stuck with this radio. Radio is great when you can see whats on the display. I contacted kenwood and they are "not aware of the issue" and are not willing to help at all. The most I got was a number I could call to ship it to and pay to get it fixed. My suggestion is to bug the **** out of kenwood until they are "aware" of the issue.

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I just solved the problem with my kenwood dpx mp 2090U - (looks similar with 501). FL Display with single CD, USB, 2 Din.
I should share this......... as I received the clue from someone that share the same case to me . Thanks to Mr,Nasirbaek from Indonesia,
The problem is at the main board . Dry (bad) soldering occurred. There are more then 5 resistors in series configuration. The resistor is quiet big (1.5mm x 3.5 mm, surface mount type R) about 2,7Ohms.The position is start from near usb port cable and ended to near big transistor (1 x 1.5 cm power transistor). After resoldering check with multitester to make sure that all R are connected in series configuration.
Just open 3 screws to access the main board. 1 at the top case. 2 at cd assembly, then Carefully take out the CD and the CD ribbon cable.
good luck.

Posted on Feb 21, 2010

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  • pempek Apr 05, 2010

    pure_kafka....you are welcome. I had been waiting for 1 year to solve the problem. I am very happy to hear you solved the problem as well.

  • Alejandro911 Sep 03, 2011

    this works!

  • Ale_89 Jun 23, 2012

    Excelent solution, works perfectly..!

  • Ale_89 Jun 23, 2012

    Excelent solution, works perfectly..!

  • pempek Jun 23, 2012

    great :) yadc

  • Tim Kaus Jul 01, 2013

    flipping AWESOME! after almost 2 years of not having a display, it finally works! Thanks pempek!

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Not knowing how to solder onto a tiny circuit board, I used an X-acto knife to scrape thru the solder on each side of the aforementioned circuits and alas...my display works for the first time in 2+ years. I simply pushed the sharp point of the blade into all the solder points hoping to restore any failed connections and it worked!!

Posted on Sep 16, 2011

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Pempek40:
Your solution was spot on. It was the fifth chip resistor from the USB location and the further connection in line from the USB.

Posted on May 15, 2012

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Here's a quick video I threw together on how to fix this. ">

Posted on Sep 03, 2011

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  • DaHogs Sep 14, 2011

    Worked for me also! TY

  • chung30
    chung30 Feb 14, 2012

    I don't how Kenwood has never heard of this. I send my unit in for repair the first time 2 years ago and it cost me $70 plus shipping to NJ. It happened again yesterday.

    Many thanks to Alejandro911. I re-solder all the resistors and they works great.

  • chung30
    chung30 Sep 05, 2012

    The display went out again recently. After repeat soldering, I finally check each resistors with a multimeter; 2 of the resistor is over 50 ohm. I brought 10 Panansonic 3/4 wattt, 5mm x 2.5mm 2.7 ohm resistors fron Digikey. The re-soldering is not easy. You need 2 solder iron to heat both end to remove each resistor.

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When I suffered the same problem, I brought it to a repair technician. He generally complained about the quality of the solder. Therefore, if you have access to an old (banned) lead based solder, I would recommend repairing it with that. I have already have had it fixed once and the problem has re-reared itself about a year later.
If lead-based solder is unavailable, then, I imagine, silver solder is better than the Tin/Antimony base.
Generally, I have adjusted to using the setting that turns off the display after 5 seconds so less heat is generated at the contact points. Don't know if it helps but the tech recommended it.

Posted on Dec 20, 2011

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Good day,

Many thanks, solution repaired my radio.

Posted on May 15, 2011

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I just did the #1 fix described by pempek40...it worked!! I was indeed skeptical but I just re-soldered those little rectangle resistors. Heat up the ends with a pencil tip solder iron, reassemble, plug it in and there's the display. I was very happy to get this working again and not have to spend $300+ on another head unit. Give it a shot, it takes about 10 min for the actual fix (not including head unit removal/reinstall time) and it's very easy. Just be careful removing the ribbon for the CD player, but otherwise it's straight forward.

Posted on Mar 27, 2011

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I tried solution # 1 (with a little 'skepticism) and ... now the display works perfectly!
Thanks pempek40

Posted on Jul 27, 2010

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Solution #1 works like a champ!! pempek40 thank you so much for posting!!!

Posted on Mar 29, 2010

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The LCD is NOT the problem. Don't bother ordering it. I did, replaced it and the LCD is still out.

Posted on Oct 26, 2008

Where can I buy this replacement part?

Posted on Apr 10, 2008

Probably the LCD problem that everyone is having. The replacement front panel part # is A64-3814-02.

Posted on Apr 08, 2008

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1 Answer

Working but no display


there are some surface mount resistors inside of the deck that probably have bad solder connections.

Jan 18, 2011 | Kenwood DPX-501 CD Player

Tip

Thanks Robotek. Here is what worked for me- the differences is in how you enter...


Hi there, there is a standard procedure we use to bypass the code when we have the gear on the test bench for repair. Try this and it should sort out your problem

You need the remote control to do this, if you don't have one, then you may need to go to a KENWOOD agent and get them to clear the code for you, or purchase one for your use.

KENWOOD KDC SECURITY CODE CLEAR procedure



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


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!

:) POSITIVE FEEDBACK :)
A FixYa rating would be fantastic for helping you out with this techo tip.:)
A FixYa vote is a great reward for the challenge of solving your problem

ask Robotek


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This hasn't been a good advertisement for Kenwood. People are impressed by the sound in my car, but not so much by the blank screen, guesswork changing stations etc.

I really like the unit, and the display was great while it worked: exactly as long as the warranty. I can't recommend Kenwood.

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