Upon power-on, TV works fine, convergence fine; after about 5 minutes, green beam moves about an inch to the right, bends inwards on the left side [looks like ) ], and there are ripples in the beam around the bottom half. It fixes itself temporarily with the convergence being a slight bit off (can separate green, blue, red beams slightly), then comes back and sticks. Powercycling gets me 5 more minutes of functionality, after which it comes back. Occurs whether set is warm or cold.
Is it an issue with the STKs? Should I order replacement STKs (392-570) and pico fuses, or would the problem be somewhere else? Don't want to invest in the ICs if they're not at fault. Thanks =)
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Ur tv have a magnetics interferences or a convergence problems.Move the tv to the left or right couples inches,will help if magnetics problems.Convergence prob.sorry ur tv convergence board must have it 2 STK convergence ICS,some it resistors change.The shop will cost u $300-350 for parts and labors.
Its a convergence problem. You may want to check the site www.tvrepairkits.com. Every thing they said every description was right on. The best money I ever spent and the confidence you get from doing it yourself, Its a great feeling of achievement not to forget the live messenger support is instantaneous, friendly and informative if you need to fix your tv go to tvrepairkits.com I fixed a philips 60 inch tv in 45 minutes, The convergecne chips were bad thanks a million. You guys saved me 250.00 bucks. I'll be recommending you to everyone I know!
Its likely that you did not find all the resistors that were damaged when the original failure occurred. Now you must re-replace the ICs and locate the other damaged resistors. Check all, including those you just replaced. Use a good ohm meter and be certain that all the resistors are gold band tolerant(5%) and of the exact resistance value and wattage.
Not sure how service menu will help you other then to do more adjustments such as 3D reform and such. Not real sure, just a long wild guess but the coils on the picture tube could possible be loose enough to change positions when heating up causing picture alignment to change. Might be a cheap service call.
Sounds like your convergence power supply board is bad if it is a ctc or ptk 195 chassis. Located above the main board on the left and dynamic convergence board on right. Has two plugs and held down with quarter inch screws. Most problems on the board is the IC on the metal heat sink which is stk 730-010. whatever you can see the part number on it. Unsolder with solder wick and solder in new. If this doesn't fix a new complete board will do.
One of your convergence IC's has burned out and needs to be replaced. If the green color is sagging from the top or bottom then the IC that handles the Green Vertical (GV) is bad, and if the green has moved inward on the left or right sides then the IC that handles the Green Horizontal (GH) is bad. Toshiba projection TV's typically use the STK392-110, and it is a good idea to go ahead and replace both IC's with the updated STK392-150's. If you do not have experience replacing convergence IC's then have a qualified tech handle it for you.