The green power light is on, but no picture. The sound seems ok but I can't even get the menu on tv. The lamps are still operational because the pots in the front show a band of each color when tweeked (I know the convergance will need redone.) Any ideas on where to concentrate my components search?
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TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.
Common Problem #1) Convergence has gone out
Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.
Common Symptoms include....
Screen looks 3D
Colors don't line up
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed or warped.
TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.
Common Problem #2) CRT Fluid is Cloudy
Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.
Hi, Please check lamp in tv as pop sound seems broken lamp. Did you replaced lamp in last 2-3 years in tv? If not, then its lamp that got broken and tv needs new lamp. Lamp replacement procedure is written in user manual and its easy, please buy Sony original lamp for good picture in tv. Thanks.
Hi, Question shows its Sony KDF-50WE655 dlp tv that has lamp inside and it seems its time to replace lamp. Did you replaced lamp in tv recently? If not, replace it. Lamp replacement procedure would be written in user manual and please buy Sony original lamp for better result. Thanks.
I had the same problem which was caused by a bad solder connection on my Green CRT driver board. The fix isn't too difficult if you've had some soldering experience.
1) Determine which CRT is going out (Reg, Green, or Blue). Looking at your convergence adjustment screen will help.
2) Unplug TV
3) Remove the front panel
4) Locate the driver board attached to bottom of the bad CRT.
5) Locate the two large heatsinks on the driver board, each has a transistor attached to it.
6) Touch-up the three solder connections on each transistor. Adding some new solder helps.
It could be you need a new lamp again (your might have gotten a defective one) or "temp" is the temperature sensor that is located on top of you lamp, could be bad also. If the lamp gets too hot, the temperature sensor will shut down you lamp so your TV will not catch on fire. If your temperature sensor has gone bad, your lamp will not turn on at all.