Just got a used Samsung HCM4216W that had been sitting idle for a few years. Picture goes green, back to normal, green...TV turns off and need to hit the power button on the tv a couple times to turn it back on.
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You need to notice if the video goes gradually or suddenly. If gradually then you have a solder connection bad that supplies voltage to the filaments of each CRT or tube. This is usually found off the high voltage transformer pin connections. If suddenly, then you are loosing high voltage and could be a bad solder connection as well around the high voltage transformer. Another problem could be loosing vertical deflection on the vertical deflection IC with bad solder connection on one of the pins. You can determine if this is the case by turning up one of the screen controls: red green or blue to see it it shows a line across the screen
ll projection 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.
I have the same issue. TV is ~ 2 yrs old. Ruled-out cable-box & HDMI cables (green present in menu mode with no cables attached).
Screen turns mostly green, with a crappy picture. After a few days, a normal picture just appeared. Today I powered-on, the green screen stuff came up, then a minute later a good picture for about 20 minutes, back to green-stuff for 10 seconds, then good picture.
Instead of typing model number of your TV (that located on right hand side and on the back of TV) you published here part number of your TV's remote control. LOL. Anyway... If it is LCD/plasma panel that you talking about - than power supply have bad electrolytic capacitors that have to be replaced. You can recognize 'em by bulged/swollen tops (instead of flat tops of good capacitors). This repair required soldering skills.
I hate to be the bearer of bad news, but it is not something that has a quick fix. Without inspecting it myself it is impossible to say, but the last three of these that I have seen have been bad digital boards and can be a real bear to change, even when you have experience.
I would get slightly different video symptoms when I would switch between the coaxial input to the component input to the HDMI input. But in all cases my on screen display and menu were anomally free. Hope this was helpful, even though I don't think it is something you should attack yourself.
Dust accumulation in color wheel, light tunnel, chip area can cause green tint.
It is very delicate area, light tunnel and chip can be easily damaged. Remove light engine assembly and color wheel. Blow dust out. Re-assemble. If the gasket around the color wheel housing is not replaced in the right position, or the housing screws not tightened correctly dust will contaminate the color wheel/light tunnel area.
Call someone that has done it a few times. If near Calgary, call me.
Well, fortunately the television that you purchased has an auto-convergence feature. What is happenning is that your color lamps are misaligned, did it get moved at all recently?
Anyway, in your menu you should see a "Convergence" menu, and inside that menu, a section called "Perfect Focus". Run Perfect Focus in this sequence: Green --> Red --> Blue
After that your picture should look great, if not try tinkering with the manual adjustments on the "Convergence" menu. Here are some URLs that you might find helpful: (just copy+paste into your browser)
Your Television On Samsung's Webstire:
Your Television's User Manual (Download And Open With Adobe PDF Reader) (The "Convergence" Menu Is Section 3.3)
After replacing a Picture tube convergence/geometry allignments can be quite extensive and if they're not fairly precise the sensors for the auto conv. can not be calibrated therefore your auto conv. not working as you described. The key is usually the geometry start with the green lines and get them as square as you can then align the red/blue. Since the auto is not going to blue that often means the blue is to far out and the sensors are not picking it up.