X646e with inverted/mirror LCD display

[Rivergoat]

Ever run across this? I had a call on an X646e with just such a display. Indeed, it was upside down and backwards. Lexmark support had not heard of it happening, but after being put on hold while they check a higher authority (?) recommended I remove the operator panel and all its connections, reattach and see if that cures it. Well, it did. My only guess is a weird voltage spike, and removing all connections let all caps disipate, so when powered up again it came up normal. Anyone else seen this odd display?

[blackcat4866]

I've had a few coin-ops do just exactly this.

Disconnect power. Reseat all connectors. Power up, an whallah! I have never had it reoccur. =^..^=

[Rivergoat]

That didn't last; in a few days it was psycho again. Got Lexmark to send me a replacement inverter board and for good measure another LCD display. It's been about a week since I installed them, and no further reports of trouble.

[Rivergoat]

For those following this thread, it's been quite a while now, and I was at the site on another call. The display is fine. I suspect the inverter board fixed it; OK to change the full LCD panel, too, i guess (but its removal was touchy, one of the little black tabs that needs to be bent for release simply snapped off when I gave it any pressure....more poor design? Anyway, not critical).