This is not a projection type tv. It is a HD Flat picture tube type. Heavy as hell! Only 3 years old. Why would it simply stop working and then start up again a few hours later? Do these types of units overheat too? It is not in an enclosure.
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Re: Flat Screen HDTV
Yes, this kind of unit overheats too, your TV has inside several chips that produce heat, and therefore the TV board has a couple of termic sensors detecting temperature from main cpu and other chipset. When it turns off approximately after the same time, is either overheating or a bad power adapter. Bacio le mani.
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comon sony problem Sony has and Ik circuit tha is suppose to not allow video in there is an uneven emission from the crts what you have on both sets the tube are getting so weak causing the circuit to kick in and out in other word you need crts inboth set and they are not avail new you can have them rebuild but the set will never look good again time to retire them
Remove front bottom panel behind it is a small black control box top controls are focus controls for R/G/B and Bottom 3 controls are your screen drives adjust one at a time turn off G/B adjust red first,then Do Green and Blue fter adjusting focu to each tube leave them set then adjust screen drive turn color off adjust RGB for a Black and white picture get as close as you can then turn color back If after doing this you still have blurry looking picture look down into Tubes you should be able to see picture clearly in each one if you cannot see picture then projection Fluid need to be changed out. Call Mats 1-800-628-1118.
It sounds like you TV is overheating and the video is suffering and the lamp is overheating as well. Also, if your TV is over 2-3 years old, the mirrors (behind and below the big front screen) desperately need to be cleaned. Clean all filters and fans as well. (Look on side and behind the unit). Is the TV in a "hot" environment and/or dirty environment? DLP TV's are NOT sealed units. They need to be cleaned every few years to work well to have a good, clear, bright picture.
We also have vertical lines with our JVC 62"... turning it off and letting it cool down is the only solution. For us, we know it's a problem with heat. We simply are wits end on fixing it. added two additional fans, a exterior fan to blow heat away from the back of the tv, pulled everything else away, etc.... Anyway, goodluck.
Color tubes are OK. Do not adjust. The issue at hand is called
convergence alignment.The repair involves-------
2)Replace convergence IC's
work should be done by a skilled technician........T.