I have sound but no picture it is a mitsubishi tv projection tv vs-5042 I was told it may need to cleaned not sure how to clean it or if that needs to be done

temexchic213 : I
Had the same problem with my vs-5042, take of the front cover for the speakers and unscrew the flat wood panel inside you will see some wires right in front like blue,white,yellow ect. wiggle those wires all over in their make sure the TV is on but be care full. It worked on mine i just had to find the right one. Good luck.

It is not bulb, are you talking about the tube ? At the neck of the tube you will see some connections.Carefully abserve if any cracks on the solderings(we call them DRY SOLDER), then connect them with soldering iron. Always make sure you have disconnected the TV from the mains. If the problem still persists, you will need to reffer to a qualified and Experienced person. He need to look for the LOT section(Auxiary power supply), video amplifier, CRT sections.

If you occasionally have a picture then you stand a good chance of repairing this tv. There are bad grounds on the deflection board. Start with the board that has the flyback. I do not know the year of your tv. Sometimes the same model may have an option improvement than one couple of months earlier. The first suspected problem would be the vertical IC. In some cases this ic is located on the convergence board and in others the flyback board. It has seven pins and is the TDA version. Located on a large heatsink. Resolder this and any other grounds on both board. Some will tell you the P I P board is bad. This is a free standing board that can be removed and replaced. But please do the earlier option first.

Sounds like you need to clean the lenses and reflective area inside your set. It is easy and all you need is a screwdriver, windex and a paper towel. UNPLUG YOUR TV.   Take off your screen and screen protector and safely set them aside. 
Clean only the lenses ( glass part) and the reflective mirror type area on the top of the inside of your set.  It will look like new. You need to do this at least once a year. 

CLEANING THE " LENS" MIGHT BE POSSIBLE IF YOU HAVE A LITTLLE SKILL,,UNPLUG THE TV FROM THE WALL OUTLET ,,,,LET ME REPEAT THAT --UNPLUG THE TV FROM THE ELECTRICITY....TAKE THE BACK OFF THE TV---LOOK UP AND YOU WILL SEE 3 PICTURE TUBES POINTING UP,,,ON TOP OF THE TUBES THERE IS A LENS (GLASS)...YOU CAN SPRAY GLASS CLEANER ON RAG OR PAPER TOWELL AND GENTLY RUB OFF ALL THE DUST AND DIRT--USUALLY REALLY BAD IF SMOKERS-- WHEN U GET THRU ,,PUT THE BACK AND REPLUG IN WALL OUTLET--THERE IS ALSO A MIRROR ON PROJECTION TV'S --I RECOMMEND A TECH FOR THAT SERVICING --IF YOU ARE UNCOMFORTABLE ABOUT DOING THIS ----DON'T

THE FRONT SCREENS USUALLY AND RARELY NEED CLEANING...JUST USE A SOFT CLOTH AND RUB TOP TO BOTTOM ON THE OUTSIDE ONLY-GEENTLY TUNICA

Seems to be the power button is stuck on the tv itself

Most proj TV's of that type have 3 Picture tubes Red, Green and Blue. It's not likely that all 3 went bad at the same time in the same manner. So I believe you have a circuit problem, probably in the power supply stages, possibly a bad solder joint.

Hope that helps...

Geno

A can of compressed air might do the trick. If dirt is stuch, I'd suggest useing the same chemicals/cloths/etc you would use for cleaning camera lenses. Check at your local photo store.

Just make sure the lenses aren't hot when you apply cold and/or flamable chemicals.

This sounds like one of the 9 volt regulators on the small signal board is going bad, supplying less than 8 volts. I have seen this is several of those sets. The IC needs to be replaced and if you do not have experience in servicing projection TV's then I suggest letting a qualified tech handle it for you.

sir i think it needs warm up or clean it,,,,or try too adjust its screen fucos thankss and hope to help you,,,gud luck