Question about Alpine CDE121
Fuses seem ok, wiring seems to be ok. unit will not power up after last time removing it from vehicle.
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: alpine cda7969r display problem
I fixed my Alpine TDA-7563 with the same problem. My display was completely blank everything else worked. After checking that the LCD display is getting power and everything else in the face that I can think of, I thought maybe the rubber LCD contacts were squeezed down or something and not making proper contact, so I just pushed it back onto the board and pressed.
This was at night, so I had an external lamp and noticed to my delight that the display was in fact working, nothing is wrong with it.
I am embarrased to say that as a technician I forgot that an LCD display needs a backlight, duh.
So a simple connectivity test on the 2 lamps shows that they are both blown.
I have to source them at my local electronics store, I measured the power supply to them as 12Volts, so it is just a matter of getting ones with the right dimensions and bright enough.
Hope you have the same problem, then it will be an easy fix for you.
Posted on Dec 14, 2008
SOURCE: intermittent power to head unit
no inline fuse? I usually just slip the wire inside the battery connector, remove connector lay wire across battery with stripped end running up the side of the battery terminal place connector down on terminal and wire, tighten connector back up.
Posted on Feb 22, 2010
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