Question about Alpine TDA-7563 Cassette Player

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Alpine cda7969r display problem

Hi i have alpine head unit and it all light up and plays apart from the lcd display, this does not light up at all. all the wires are connected and fuses ok. any ideas?

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Re: alpine cda7969r display problem

Hi trinder,
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.
Good luck,

Posted on Dec 14, 2008

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