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Question about GE 46GW947 46" Rear Projection Television

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Now, this is strange

A friend gave me this TV, she was moving. Convergence was a little out of whack. When I opened it, luckily there was a service sheet, telling me to hold whatever couple buttons in the front, and what to do and not to do. I got it working pretty good, then went into screen menu, #4-Adjust Projection TV--Got it working great! Here's the kicker. After a couple days,I moved it to other side of room. It rverted back to the way it was to begin with, I lost the service paper,--but get this--the #4 choice to Adjust is no longer on the screen menu!!!What could possibly explain that? It was there before, it's supposed to be there--where'd it go ????

Posted by Van Spickler on

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Anonymous

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Might be a micro issue, have you tried to reset power to set?

Posted on Jul 06, 2007

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I bought this model from a friend and he mentioned that when moving the tv around it might get bumped a little bit and this could "throw the colors off". HE said i could pop the outter casing off...

Tv now have colors R,G,B lines mis alignments,have colors shadows or 3D pictures look alike?Yes,this tv have a problems known as a convergence problems,sorry but ur friend screw u over.This tv the convergence board is dead.The tv convergence board require replacing 2 STK convergence ICS and some or all of it resistors too.Fix the convergence board to solved the tv convergence picture problems.U have all the tools and can u do basic soldering?Yes,tries websites like Tvrepairworld.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.Or the shop,will cost u like $300-350 for parts and labors.
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Hi,
It's a convergence issue. Go into the main TV menu under video settings and look for convergence. If it has an auto convergence select that and wait a minute the TV will adjust itself and give you a clear picture.
If the TV does not have an auto convergence and just regular convergence than select this. It will give you a grid pattern on your TV and you have to move the coursor (using TV remote) and adjust each "point" so that each line is perfectly white. If you notice red or blue anywhere on that "line" then you have to adjust using the up, down, left and right arrow keys to "line up the red and blue lines with the nearest white line. It takes time and patience to do, but when completed, all lines on the grid pattern should be pure white and you will have a great looking picture.
You have to do this will all TV inputs (Video1, Video2 and so on) the reason Zoom looks good, is because you never used that screen as much and so the lenses didn't have a chance to get out of syncs.
RPTV's are made of the three lenses (red, Blue and Green) and as you watch TV, these lenses slowly get out of alignment. So you should do a convergence about twice a year to make sure nothing is out of whack.
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Your TV most likely has a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem


  • 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.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.
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Your Green and Blue horizontal video amplifiers have collapsed: try using a freon cold spray on these chips as this occurs when the heatsink grease dries up on the HVA chips and, causes an overheat condition; if you have an oscilloscope monitor the vert drive as well.
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no its not true, you can lay them flat to move, it sounds like the convergence is out of whack, download the owners manual and redo the convergence manually for the red and blue, then go back and do the same for the multi point convergence for the red and blue, also if the color looks muted or flat, the projector lenses might need to be cleaned as well as the mirror in side of the unit.... very easy to do, just use caution and DO NOT SPRAY ANY LIQUIDS INSIDE THE UNIT.... spray the cleaning rag outside the unit the wipe off the mirror and lenses....i got this same TV free from craigs list here in pa, put a new mirror in because the original was shattered and re did the convergence and this TV pic is AWSOME.... very crisp and clear...hope this helps you
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Two things may have happened. First you may just need to degauss the CRTS. Let me explain when you move your TV you often cut across flux lines (magnetic lines of force) these have then tendency to magnetize your screen mask (a metal component in the CRT that slows down electrons) and cause what is sometimes misdiagnosed as a convergence problem. All that has to take place is a once over with a degaussing coil and the problem is fixed. The other thing that could have happened is the your convergence correction amplifiers have gone bad. This will require that you replace both modules (STK392-110). If you have a background in electronics you can perform these tasks, however if you don not have a background in electronics, I would suggest that you contact a qualified TV repair shop to service your TV set.

 

I hope this helps,

Thank You,

Shuttle83

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Sounds like you have a blue foldover in the convergence. Since tv has been worked on it could be bad ic, maybe not original, generic. I would say if you can open set and look in, look for the blue it should be marked. look for a loose connection. If you can have someone to gently tap around that blue amp and see if it moves are go away, it might be a simple loose connection and needs soldering. If not then my have to change ic again. Becareful cause set would need to be on to really check. Hope this helps.
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