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.
How would one get to the convergence ic unit?
Otto
Hi guys, I had convergence problem as well and most of the resistors were burnt, some were not readable. Before the pic was curvey from topa and bottom (red only) and now that is fine after I changed all the resistors and both the STK ICs, but now the picture is curvey only from the RIGHT SIDE, I can line up the crosses, but they are curvey from RIGHT SIDE. I think I might have put one WRONG VALUE resistor since some were not readable. So, if someone could help by letting me know all the resistor values with locations, so I can check them all and make sure correct value resistor goes into correct loaction.
I would really appreciate the help.
Thankyou
Hi,
Have the same problem with convergence. I replaced the STK amps and resistors. This gave me better control of convergence adjusting but the pincushion adjust does not work. The screen is pincushioned in on the top and bottom and I cannot adjust them even in service mode adjustments. Do I have to mess with the Yokes? I really would rather not. There are some resistors that I did not replace since they had a good reading when I checked them. I checked them in circuit. Should I replace them anyway? Thanks for any help.
×