Alpine CDA 7850 No Display - diyAudio
Go Back   Home > Forums > General Interest > Car Audio
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 4th April 2012, 06:37 AM   #1
diyAudio Member
Join Date: Apr 2012
Default Alpine CDA 7850 No Display

Hi My car stereo display failed when I started my Car but it is functioning without any problem.CD ,Radio,front panel Buttons ,Remote everything is working .But no Display.Just want to figure out is the problem in fuse in the Car or with Car Head unit or Unit face plate.Please Suggest some solution.

Advance thanks for your Support.

  Reply With Quote
Old 4th April 2012, 11:18 AM   #2
diyAudio Member
Join Date: Sep 2009
Location: Wisconsin
Maybe the backlight is out, if everything else is working.
BK 1544 40Mhz scope.....Pyramid PS-26KX supply.....Tenma 72-380 Func. Generator
  Reply With Quote
Old 4th April 2012, 11:23 AM   #3
diyAudio Member
Join Date: Apr 2012
Default thanks

Hi brandes thanks for your reply,but I tried each and every LED imside the faceplate with battery and it glows.So I think ther will be no probelm with backlight.
  Reply With Quote
Old 5th April 2012, 02:17 PM   #4
diyAudio Member
Join Date: Oct 2011
Location: californi
same problem happens to Kenwood cd's. Resolder all of the smd resistors grouped together on the main circuit board. Hope this helps.
  Reply With Quote
Old 6th April 2012, 12:30 AM   #5
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
Does this have a fluorescent display?
  Reply With Quote
Old 6th April 2012, 06:19 AM   #6
diyAudio Member
Join Date: Apr 2012
Default NO LIGHT

May Be I need to add this.The Display and also the LED light for the Front panel keys are also not working .
There is no Sign of Light and It is Totally blind .I guess the Voltage going to the LED circuit might be problem but could not figure out the Correct Circuit.
  Reply With Quote
Old 7th April 2012, 06:51 AM   #7
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
If this head unit has a ribbon cable that flexes when the face is folded down, the ribbon could be defective.
  Reply With Quote
Old 8th April 2012, 05:52 AM   #8
ivkata is offline ivkata  United States
diyAudio Member
Join Date: Dec 2010
I vote for the ribbon as well.I fixed quite a few Alpines in the past and those with the tilt face tend to have bad ribbons -mostly the first or the second pin right to left as those are the thicker ones -most likely power/ground .In mine they will break right by the connector and won't be visible till the cable is removed from the unit completely
  Reply With Quote
Old 9th April 2012, 07:34 AM   #9
diyAudio Member
Join Date: Apr 2012
Thanks for your reply.I doubt that if the ribbon cable is the problem then how could the face plate buttons work with tone.May be separate power for Display and buttons.
Also one more thing I observed.When we eject CD source there will be LED Light behind the face plate when it it got tilted to insert or remove CD.Even that is also not glowing So I doubt on the Ribbon cable
Also can you provide the Pin configuration for the ribbon cable so that I check Voltage with multi meter.
  Reply With Quote
Old 22nd September 2012, 03:41 PM   #10
ttimbo is offline ttimbo  Canada
diyAudio Member
Join Date: Oct 2009
Location: Earth
Did you resolve this issue? What was the cause/solution?

I am having the same exact problem with an Alpine CDA-7897.

Retractable phantom face looks completely dead, no lighting at all, but with a flashlight I can see the display is showing time counter of cd or radio stations and buttons beep when depressed.

The ribbon cable on mine seems to be in good condition when disassembled during troubleshooting, but it could've been bad. Maybe I should get a replacement ribbon cable.

Anyone know of a good place to get a replacement ribbon cable for an Alpine CDA-7897 and roughly at what cost?

If I get replacement ribbon cable, how would I go about disassembling the face to access that end of the ribbon going into the back of the face?

Any suggestions, help, recommends?

  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Alpine CDA 7969R Repair JonFennell Car Audio 1 5th March 2010 11:18 PM
Alpine CDA-7995 Repair Q. ACraig Car Audio 6 14th May 2009 01:57 PM
Alpine cda 7995 no output amc32 Car Audio 10 16th April 2009 09:45 PM
alpine cda-9887 Madmike2 Car Audio 3 20th February 2008 11:54 PM
Alpine CDA-9827 Dave Car Audio 1 1st February 2005 07:27 AM

New To Site? Need Help?

All times are GMT. The time now is 03:16 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2