What was found
WINDOW EICAS MSG DISPLAYED POSITION 3(1-L FWD,2=L SIDE,3= R FWD,4=R SIDE).INOP LIGHT ILLUM. INOP LIGHT DID NOT EXTINGUISH WHEN SWITCH WAS RECYCLED TO OFF THEN ON. FRM 30 41 02 -. CREW COMMENTS: CLIMBING THRU FL280 R FWD WINDOW HEAT INOP CHRONIC RAN C LIST, NO HELP. CHECK WIRING TO WINDOW ALL OK, CHECK CONDITION OF WINDOW NO BURNING MARKS PERFORMED BITE CHECK OF WHCU AS PER AMM (30-41-00 FIG 103 BLOCKS 1 THRU 3). COMPONENTS AND INTERFACE GOOD, SWITCH WINDOW HEAT ON, ALL INDICATIONS GOOD.