Your
TV most likely has one or more possible problems.
Problem #1: Convergence Chip 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 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.
Solution #1
You need to replace the convergence chips and convergence resistors. Check the site
www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a
photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.
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.
Picture of a set that needs the fluid changed.
TV set after fluid change
Solution #2
What you will need to do is replace the coolant and clean the crt. You can get a repair kit from
www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.
Thanks for the info. I want to try and do the task myself. The repairman charges $80 just for showing up. $400 to replace the IC. The repair kit online I found for $46. I am handy with a soldering iron. I just can't seem to figure out how to remove the board out of the tv in order to remove and replace the STK392-110 and some resistors.
It's the 4 white connectors that bridge the 2 boards. One mounts the adjustments for all the colors and the jacks to connect the RCA connectors and antenna. The other for the ICs. There are 4 white pin connectors that mounts (bridge) these two boards together. Also, two wires that looks like spark plug wires with rubber boots on either end that I cannot disconnect. I tried twisting clockwise and counterclock wise with no luck. I hope you can help me with this problem. Again the service manual does not have a procedure for removal of these items.
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