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A full service manual is available online---I will presume you tried to unplug it for a while and then power back to see if will reset itself.
This set has three hidden menus---one is the OPTION menu--in that menu with the Mitsubishi remote you can do a hard reset of the entire set= sets all back to factory except convergence adjustments which are stored in another area--cures all kinds of oddball issues.
I can give you a link to the manual and the page numbers for the OPTION menu.
Note: the other two hidden menus are Convergence and adjustment--do not go into adjustment menu as one wrong move and poof!
This TV does not have a single lamp but a set of CRT tubes.
If you get menu displayed on wrong clors or colors are not matching then it is either a bad CRT, a bad CRT high voltage power board, or sometimes a problem with convergence board and convergence ICs, however in this last case you usually get no picture and no sound .
you need more than 2 capacitors there are 8 that need to be changed, You can get the V26 DLP power pwb repair kit at the following link which has the proper capacitors and instruction CD. http://servicemanuals.vstore.ca/
FIRST CHECK CONNECTOR "DR" FOR PROPER CONNECTION, BETWEEN THE DEFL MINI PCB AND THE MAIN PCB. 2. CHECK C5A09 AND C5A50 BOTH 33 UFD 50 V OFF OF IC5A01 ON PCB-DEFL MINI. 3. CHECK FOR LEAKY IC5A03 PART # 270P704010 ON PCB-DEFL MINI 4. SUSPECT THE HIGH VOLTAGE BLOCK PART # 920P016010 IF STILL NO HELP PROBLEM CAN BE INTERMITTENT (TEMPERATURE RELATED) CAUSED BY IC7D04 PART # 275P245010 ON THE DOUBLER PCB THIS WOULD BE A THIN VERTICAL LINE IN CENTER, IF GUNS WERE ON.