Xerox 7845 weird problems

[patterson70]

I have a Xerox 7845 that may have been zapped.
all of a sudden the original is stopping half way through the ADF. I have to remove it manually from underneath. There is no obstruction. Also tray one says empty but there is paper in it. Tray 4 does work. Also the display screen is showing green and purple where it was never there before. Kind of a faint pulsating pattern.
is this a board problem? Customer does not have any surge protection. There was a recent storm and power outage. Is it worth repairing if it is?
please advise. Thank you.

[CynthiaTaylor]

Nothing special

[shinchan]

1. DADF, most of the times the foam pad for the actuator melt. so replace the foam pad
2. screen/touch screen, most likely you need to replace the whole UI ... try spraying the UI cable with contact cleaner first
3. tray 1 empty but there is paper. could be the paper size sensor or the green tab is broken.