Discussion:
[KL] K2000R display replacement: how to get the cover off
contact@jacobvosmaer.nl [KurzList]
2017-06-24 19:31:29 UTC
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Hi everybody,


New K2000R owner here. My unit came with a spare EL panel which the previous owner never got around to installing, so I figured let's give that a try. I wish I hadn't because I must have damaged one of the lines between the LCD board and the display itself: I have a dead row of pixels now that wasn't there before. :(


So, time for a new display.


At this point I would normally try to go for an LED-lighted display but those are quite a bit thicker than the EL-lighted ones and my K2000R has no wiggle room between the 'escutcheon' (to use the words of the service manual) and the inside metal frame that holds the display board.


Luckily I found one ebay seller who carries EL-backlighted panels of what I think is the right type. http://www.ebay.nl/itm/Powertip-LCD-Grafik-Display-24064-GLCD-240-64-PG24064E-PD-T6963C-1-Stuck-/311819406726 http://www.ebay.nl/itm/Powertip-LCD-Grafik-Display-24064-GLCD-240-64-PG24064E-PD-T6963C-1-Stuck-/311819406726


I intend to put a block of 2x10 2.54mm male headers on the new board, and I'll make a new 20-wire IDC ribbon cable (I don't want to mess up the old display trying to desolder the ribbon cable). The EL power connector looks special and I think it will be easy enough to desolder those two wires from the old LCD and attach them to the new board.


I am not sure what to do about the display cover though. I am talking about the transparent piece of plastic (plexiglass?) glued on top of the LCD. Is this a standard part that one can just buy? I haven't found any. Or would I be better off removing the cover from the old LCD and putting it on the new one? How do I go about that? It seems to be glued on, and I don't want to damage it while removing it.


Has anybody else here had to do this when replacing a K2000R display?


Thanks in advance for your help.


Cheers, Jacob
contact@jacobvosmaer.nl [KurzList]
2017-06-25 11:51:01 UTC
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Good news, I managed to fix the old display. I took the display of the PCB by bending the metal tabs straight. This let met see how much too wide the new backlight was. I desoldered the backlight and trimmed its sides with scissors (being extra careful on the side with the thin metal strip). I then put it all back together and now all rows/columns of the display are working fine again. Yay!
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