Vintage Synth Repair

Hi Eons,

Someone has either dropped the synth and it banged the display or they had it apart and put it back together wrong. The LCD glass is not aligned with the rubber strips and the driver pcb. You will need to bend the metal tabs and remove the glass. Then the rubber strips need to be aligned perfectly with the contacts on the driver board and the glass. If you look very closely you can see the etching in the glass for the connections. I usually mark everything before disassembly so the glass doesn't get installed upside down. Also there may be a cable that connects the driver board to the glass. These can be damaged and cause bad connections. The KN2000 probably has this type of display because it's so large. It looks similar to a Casio FZ & VZ display.

I've seen where individuals have tried using superglue to hold the rubber strips in place. The glue gets into the connections and messes the display so lines are missing. Let us know what you find....

Fran

--- In vintagesynthrepair@yahoogroups.com, "eons" <laser@...> wrote:
>
> Hi all,
> 
> I have KN2000 for repair that has display with lines (randomly striped display).
> 
> Replaced the 14-wire harness as someone interfered with the end that fits into socket resulting in a bad connection. But still the new harness has made no difference regarding the strips.
> 
> Anyone been here before and/or has service manual to share please?
> 
> Thanks guys for any help or suggestions,
> 
> eons
>