The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
https://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; [Exclude the model number], in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
SOURCE: CONVERGENCE ic CHIP
I replaced the Convergence IC Chip STK392-110 for my PT-53WX42 Panasonic HD Rear Projection TV but I found burnt resistor(resistor #)R7053,R7002 & R7005.Can someone tell me the part# ,description,resistor value and power rating.I don't have the schematic to look .Thanks
SOURCE: HC-P4752W - IC Replacement vs Convergence Module.
The colors weren't lining up correctly on my HC-P4752W which is only about 30 months old. I did a little bit of research and got ahold of the people at http://servicemanuals.vstore.ca/ They recommended replacing the IC's as well as the IC resistors. I purchased the replacement parts from their site and made the repairs myself. I should mention that I didn't have any previous soldering experience. The repair was easy and a complete success. You may find replacement parts elsewhere for slightly cheaper but what you won't find is the prompt and detailed customer service that they provide. They gave me there # and said to call if I had any questions before or during repair. I took advantage of their services and got answers every time I called.
SOURCE: convergence chip
Convergence ICs cost around 15-25 each there are only two of them. I would go ahead and replace both of them because if one goes the other one will follow shortly. I would make sure that it is just the convergence IC not something else, and if its over five years old dont pay more than $500.
SOURCE: Mitsubishi WS-55859 55in Rear Projection CONVERGENCE won't correct
HELLO YOU FIRST NEED TO UNPLUG THE SET , THEN TAKE OFF THE BACK OF THE SET. AND LOOK FOR TWO LARGE SILVER HEAT SENK'S THE IC CHIP'S WILL HAVE STK-393-110 ON THEM.!!! WILL BE SCREWED TO THESE HEAT SENK'S WITH SCREW'S AND SOLDER TO THE BOARD ON THE BOTTEM OF THE BOARD,!!! WELL "GOOD LUCK"
SOURCE: sony projection tv convergance trouble
Replacing the IC's and the checks you did usually solves the problem.
Double check your wires - especially the R,G and B convergence wires going to the CRT necks - I've had them mislabbeled from the factory b4 and that really throws you off.
Was there any change in symptoms once the IC's were changed and do you have the negative and + supplies feeding the IC's (usually around 30VDC)
If you have the manual, have you tried service menu convergence adjustments?
Testimonial: "Thanks power seems to be good as close as I can get. how do I do a service menu convergence adjustment? all the kp-61hs30 has is auto convergence"
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