Sony 42 inch plazma display on screen ...fan problem powering down

Most often, I find when servicing these televisions, the lamp has failed but it was due to poor fan circulation. This television has at least 3 if not 4 fans. If you take off the back and find these fans are filled with impacted dust, the fan may be causing the failure. Also check to be certain your door safety switch is making good contact. These tips should ber of assistance but check your fans. A clean inside of a tv is a happy tv!

hi,
i think ur tvs colling fan has some problem. open the back cover of ur tv and then power it on. watch is the cooling fan is working or not. normally it will be in top the left and right side. if it is not working. remove the power. then remove the fans clean it with a brush. u can see a label on the fan in which its specification are written. remove the label. and put two drops of oil in its bearing. turn the fan leafs with ur finger for some time till it runs freely. fix it back . then power on ur tv .
ok

Unplugging camcorder haven't damage your set. Looks like you have an issue with you main/signal board. while you pull the plug, you may stress the connections on the board, what about to be happen, anyway.To diagnose and fix plazma you must be an expert, definitely not a beginner. If you want to take a chance of braking the display, you may try to poke it open, face down on soft surface(about 50 screws) and tap on the board with all of plug connections, wile tv is working, but need someone to help you, by holding tv on it's bottom(if there are no speakers) or top.look at the screen and see, if tapping makes a difference. If it is, you've got lucky! If not, surrender to experts.
good luck,
Alex's TV Service,
Philadelphia, PA
215-806-5980.

I have the same problem, I just spoke with LG Customer service. They had me unplug the power cord, hold down the power button for thirty seconds, plug back in and turn it on, this DID NOT work for me, but maybe it will work for you.

Good Luck! Mine is going to a service shop, maybe what they tell me I can post and it will help you if you have not gotten your tv fixed yet!

This could be a variant of, or a newer (or older) version of the "DMD fan failure" message.

Symptoms I had are, I stop hearing a fan when the message is displayed.
Then the temp LED keeps flashing RED until I either try to turn the TV on again,
Or turn MAIN power off/on again. BUT it repeats when I try to turn the TV on.
The picture appears normal until this happens ( about 15 sec.)

The solution is to FORCE a normal shutdown by hitting the TV off button
before the message appears.
You should see the power LED flashing RED/GREEN (cool down) and then RED (standby).

The error code tyo which you refer was truncated off of your posting. Could you please enter that code again? That code will assist us in determining the problem circuit.

Thanks,
Dan

I got it! Take out the batteries and then hold down the power button (or any button) for a minute or two.

You either have a bad fan or one of the rotation sensors mounted on one of the fans has failed. Take the back off the set and see it the main fan slightly right of center is rotating. If it is, there are two more fans, one mounted right above the lamp and another on the optical block itself. You will have to pull the optical block to check those.

You have a burn in problem from watching widescreen movies.If you have access to a signal generator or tv setup disc run a perfectly white screen on the plasma for about 30 min.This should help even out the pixels on the display.

There are several shutdown circuits on this unit. The X main or Y main are the usual suspects. Call 1-800-Samsung for a qualified servicer in your area.