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.
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it may have a connection problem(flexible strip) to the PCB that has dislodged, or the display itself has developed a problem. Couple of questions, is it entire characters that are missing, or parts of same. Is the unit still operating normally?
Hit me back here and we shall get to the bottom of your problem.:)
what year is your car?newer cars 1999 and up the radio wiring harness goes thru the ecm (electronic control module).if that head unit is not supported it wont work correctly.in a bad case senario the head unit could damage the ecm.
you have turned on the "black-out" feature to get it back look for a little button over the volume knob with either "dispay" or "blackout" on it. Press and hold it and you will hear a beep to let you know you changed it. Why Alpine put that feature in the head units is to confuse and comfound drivers is my guess.
Look for "TITLE" button on the right hand side of the display.
press TITLE repeatedly until the time is displayed.
when power is OFF but iginition is ON press TITLE to display the time.
i hope this solution helps .
The first thing to check is the solder connections on the display itself. Look specifically at the connections on either end of the display. These are the supply pins. Also, I don't know if this model has an LCD display or LED. If LCD, then make sure that the back light is funtioning.
Keep us posted on what you find.
Yes, I'm sure Alpine will sell you another face but there is still the option of repairing the broken face at a good repair shop. Of course getting a new face is the easiest (read most expensive) way to get you going again.