Question about Alpine CDM-7835

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Alpine 7835 display lights not working, everything else is fine

I have removed the faceplate and cleaned the contacts as well..

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If it's not under warranty, I would advise taking the face plate apart and checking for burned spots on the board and using compressed air to remove anything that is conductive that may cause a short in the face plate. The face plate should be really easy to take apart.

Posted on Feb 11, 2009

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is the faceplate detachable? if so remove it and clean the metal contacts on both the din unit itself and the faceplate with rubbing alcohol on a cotton swab or Q tip.

if it is not a detachable face, then i would say an internal solder joint is starting to come loose, that is an older alpine model number after all.

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you can try removing the faceplate and cleaning the copper contacts with a pencil eraser. This might help

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Hi there,
If this model has a detachable faceplate,
Remove the faceplate and clean down the contacts with metho and a cotton bud. 
Over time usually corrosion and dirt etc builds up on these terminals making them loose cotact when you touch the faceplate.
This is the most commonly known problem alpine units.
Other common problems is the power supply failing /amplifier.
Hope this helps you out
Cheers
Steve

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the faceplate contacts may need to be cleaned. remove the faceplate, and using an eraser, clean the metal tabs on the main unit and rear of the faceplate.
If this doesnt remedy the problem, service is required. May be the light unit in the faceplate.

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Here's a link to the manual download page at Alpine. It should tell you everything you need to know.

http://www.alpine-usa.com/US-en/support/support_search.php?modelname=CDM-7835


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Not to sound very obvious, but it honestly just sounds like there is a connection problem between the faceplate and the unit. I would first try using some electrical contact cleaner and cleaning the contacts, installing and removing the faceplate a few times and see what that does. I hope this does something for you. Let me know if I can be of more assistance.

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Here's a link to Alpine's manual download page for your model:

http://www.alpine-usa.com/US-en/support/support_search.php?modelname=CDM-7835

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clean the contacts of the connections if that does not work it is time to call a tech or replace the face plate could be faulty.good luck.

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