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Try unplugging all your tvs from mains and keep unplugged for a few hours. try to plug back in and attempt to turn on. See if this trick works. Likely there could be some internal damage in power supply or it could be fuses.
It is possible that your tuner module has some dry solder/weak joints that is causing the fault. Open as before and look into the board very carefully to see if there is any weak spot. Use a good solderring iron to touch up all the suspect areas but be very careful and do not try this if not familiar to solder as it might turn serious. Hence you can ask an electronic technician to check on this and solder up the chroma/processing stages and reset. If this does not solve the issue , the fault could be failure of the concerned IC. Confirm and replace carefully. Hope you get this right.Good day
replace the lamps and then run the synch routine from the main menu. unfortunitly with the expense of the lamps and the low price to replace projection tvs it might not be worthwhile to fix but just replace.
HINT wait till after new years, LCD large screen tv sold about 35% of what was expected during xmas so they will be real real cheap after the 1st of the year
If you are talking about a continuing display of features and menus, press the Volume Up and Volume Down buttons at the same time to shut off that display.
If the problem is that the set acts like you are pressing the front panel button and random things happen, there may be bad switches. Sometimes if Windex or other cleaners have been sprayed on to clean the picture tube, they can drip down onto the board and cause corrosion which makes the switches funky. They need to be replaced and the board cleaned of any residue.
Are you connected using R,G,B (component) cables? Check them to make sure they are in firmly - if so, then try a new set - that may very well fix the rolling issue. (Unless the rolling is caused by poor antenna reception).
Press "Sleep" on the original remote control for this TV if you still have it until the TV says "Sleep OFF".
If no strong TV signal is detected, this unit goes into sleep mode, which may explain Tuner B shutting off after 5 minutes.