Re: Radio display LCD (archive)

Joe, I thought it was a long shot, since you said you had missing segments. My symptoms were half the display was dim, and this deteriorated to a display that was completely out. I wouldn't use boiling water, but I might try putting it in the oven at various elevated temperatures.

Paul Shovestul

Paul, that's a good suggestion but I'm sure it's in the LCD glass. The backlights are OK. I also removed the LCD assembly by desoldering its metal frame. I could get individual segments in the glass to fire from low-level static on my fingers (run along the contact area of the glass) except the known bad segments, so the problem is in the conductive pathway within the LCD glass sandwich or the liquid crystal matrix itself for those segments. I thought about dropping the LCD glass in boiling water to see if that would rejuvenate it, but decided that's probably not a good idea. Any other ideas?

Are you sure the problem isn't one of the three backlights? I just had to replace all three backlight bulbs in my KE83-ZBM. These were exposed when you unsolder the metal frame around the LCD display from the PC board it's mounted on.

Paul Shovestul

I have an '88 M5. The radio LCD display has several missing segments -- truly annoying but I want to keep the car original. Does anyone know of a source for just the LCD glass sandwich assembly or the display circuit board assembly with LCD. I've carefully disassembled the LCD module previously and the problem is in the LCD glass itself and not the zebra strip connection or the circuit board.
The display circuit board has the part number CNP 1055-D on it.

Radio/Cassette deck is Model KE-81 ZBM02, Spec No. /XH/US, PHE 0105885, FCC ID:AJD4D1KE-81ZBM-02, Under License of Staar SA, Brussels, Assembled in USA, Japanese Parts

I already bought one used radio from a vintage 5 series but it turned out that the LCD display was mapped differently. My radio has the anti-theft, auto reverse cassette deck. Any help or suggestions on a source for the radio LCD display would be much appreciated. Thanks, Joe

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