What was found
UNIT HAD BROKEN "MAP" SWITCH, REPLACED SWITCH WITH SPARE. REPAIRED.TROUBLESHOT UNIT FURTHER AND FOUND VIDEO BOARD TO BE INTERMITTENT AND LOGIC #2BOARD BAD. CAUSES DISTORTED DISPLAY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
UNIT HAD BROKEN "MAP" SWITCH, REPLACED SWITCH WITH SPARE. REPAIRED.TROUBLESHOT UNIT FURTHER AND FOUND VIDEO BOARD TO BE INTERMITTENT AND LOGIC #2BOARD BAD. CAUSES DISTORTED DISPLAY.