Mitsubishi DLP Model WD-62526, When i fresh connect the set to AC Mains green led in front blinks for about a minute, then go off and push "POWER" set is on with clear picture and sound, but in the range of 5 to 15 minutes tv will shut off, and green led blinks again for another minute, then if i push "POWER" button again i get picture and sound as normal, then shuts off again, what could be the cause? Thanks in advance, Paul.
I would bet the illumination lamp has reached the end of it's life (~$40 online). Should be easy to replace. Also possible the ventilation vents need cleaning, which could cause the lamp to overheat and turn off.
Well, thanks for your quick reply Dave, vents are free of any dust, set is very clean indeed, working in a smoke-free environment, all fan motors are running while the set is on, and when goes off some are still running for a minute or so, then completely shuts off, what it gets my attention is the fact that shuts off with apparently no regular basis, could work 1 minute, as well as 10 minutes, but certainly will go off, when is on i can get a very clear picture, no dims or something strange, full good picture and brightness, as well as colors, if i ask the set for a code pressing menu and device throws a 12 which means that there's no errors according with the table presented elsewhere in this site, i do not want to start spending money without a trustable diagnosis, or closest as possible to the real issue, thank you and i will wait for help...
Another thing is just seconds before it goes off the front panel buttons become inoperative, and when turn on back they operate in a normal way...any suggestions?
It's like some voltage go down and few seconds later put set off...imho...
Lamp? even if i got very clear and bright picture?
Who want to take the challenge?
Now, before shuts off goes into solid blue screen and sound muted, then after a few seconds finally go out...any toughts?
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SOURCE: mitsubishi wd-62825 dlp
The WD62825 has a Digital Module located on the left side of the chassis looking at it from the rear of the set. It's housed in a metal box that can slide out of its holder after removing the trim screws.
The module has its own power supply board and there are a group of 16v/1000uf caps on that board which commonly fail causing the constant flashing standby light. Further back on the module is a small board about the size of a matchbook called the E2P module. Its SMT (Surface Mount Technology) caps also commonly fail which can cause the same symptoms. Techs can tell whether the E2P has failed by simply removing it, hooking the DM back up and trying to power the set. If it powers on the picture won't be much good - but at least you can tell what's keeping it down...
Back to the caps on the pwr board. If they've failed they usually will buldge visibly on top. And ESR is almost not necessary. In any event that's the nuts and bolts on this model.
Is it a job for a layman? Yes and no - you might strongly consider a tech if you don't feel comfortable removing all the connections that the DM has with the signal board. There are about six - multi-pin - wired connections to unplug and then sliding the DM out of the unit and carefully removing the screws and latching to take the DM top cover off...
Hope this helps.
Bill
SOURCE: mitsubishi DLP overheating
Mitsubishi has problems with the thermal sensor going bad. They extended the warranty for several sets. The sensor is right by the lamp. Call mitsubishi and insist they do something for you. If you keep playing your set, the bulb could also be at risk. I would think your set is covered being a 62" set. Good-luck and be sure to act ASAP.
SOURCE: mitsubishi wd-62825 dlp
If the green front panel LED blinks continuously and the TV never comes on, its an issue with the "DM" board. When these TVs are first plugged in, the green LED should blink for 30 sec. to a minute or so. This is the TV booting up, reading its software. Mitsubishi has been having problems with this circuit for several years. In may cases the only permanent solution is to have the chassis rebuilt by Mitsubishi at considerable cost and inconvience. The chassis may have to be sent back to Mits for this rebuild. Call Mits and ask for help.
michtech
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