When you turn the tv on there is no picture on the antenna a or b channels sometimes there is audio other times its all just snow noise but no picture. this last for somewhere between 1 min to 5 min and then the picture comes on. sometimes it will go on and off during this time. If you use an input such as a dvd or any other not utilizing the antenna a or b input the picture comes right on no delay at all. WE usually watch a dvd while waiting for the antenna inputs to work. tried a/v reset and turning power off. Perhaps its a input problem. i did take the screen off and dusted and removed cobwebs from circuit boards but no luck. what do i look for for ?
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Re: Mitsubishi WS-65819 2002 rear projection
1)possible bad RF modulator (the small box the
A or B signal first goes thru)
2)Bad tuner (mounted on signal board)
3)or missing voltage to run tuner
You could replace signal PCB,but that gets a little pricey.
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Rear projection TVs are dinosaurs. Sell it if you can get anybody to buy it and get an HDtv they're pretty cheap now not to mention thinner, lighter and better for your eyes. Imagine the space you'll save if you mount it on the wall and the cost of electricity. Not trying to be a jerk but it's time to move into the 21st century. The picture is waaaaay better.
You need to run an external antenna feed to the air DTV input jack, bottom left. You can use your loop out if you already have an antenna connected to your antenna A input jack. Create a DTV device, then run your antenna setup for DTV.
Have had bad exprience with RCA converter boxes. The box will lose audio and has to be turned off and then back on. You may want to hit mute during this process, the volume varies from analog to DTV. If you have no problem with analog audio I would look into a different converter box.
Like your computer a tv has the same type of circuits, & sometimes they get glitches, maybe, but i feel you might be starting to have a problem in the 'DMD" board in your tv. Maybe not; unplug tv for 10 min to 24 hrs. I am a mit factory auth tech. good luck,.
convergence ic going. you may also want to check some caps; http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
caps http://www.chrisandnat.com/Projects/BlinkingTV/blink.htm http://www.jeremyburns.com/Mitsubishi-Green-Blinking-Light-Fix.pdf http://www.fixya.com/howto/h159332-mitsubishi_dm_board_repair http://hdtvoice.com/voice/showthread.php?t=32186 replace DM
Did you try reset? Unplug AC cord for a while,plug in try again...
2) With paper clip, activate reset thru access hole on front of
TV ( consult owners manual) recheck.....................
3) Leave set unplugged from AC overnight.................T.