First i had a problem with distorted picture and shoting down - i replaced
IC's and now i have another issue with the green and red bowing and not
lining up on the screen - solution for both issues are discussed here
and it is -- replace the IC's -- but i did just that, neatly and carefully, IC's
came from ebay - here is there anything else i should check/replace, try diferents IC's or does it need calibration?
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It sounds like the convergence IC's have failed. Replace the defective Convergence Output IC Part Number 23905094 (STK392-110) using the revised “T” version IC Part Number 23135090 (STK392-110T). When Convergence Output failure is detected, it’s recommended that both IC’s be changed to the “T” type IC version. Inspect the Convergence Output IC’s for the “T” type version.
1420-B Toshiba Dr.
Lebanon, TN 37087
Good Luck, Big Irish.
the 392-110 used in this set can be replaced with either 392-110 or 392-150----The 150 is a higher current rated IC-------I do a lot of these sets---I would not go to the 160 IC as you may run into problems----also---the 110 should last 3-5 years and the 150 longer---make sure when you change them to check all the protection resistors in front of them and do not forget to put heat sink grease on the new IC's
If this answers your question give me a vote here----I have repaired hundreds of sets with convergence problems---its ok to go up a step or two on the quality of the IC, just don't get carried away---keep it simple
You could have a Power Supply Regulator Problem. Many times these sets will not hold Horizontal sync when there is excessive High Voltage or a problem with the High Voltage Regulation. This is not a problem you want to deal with yourself. I would recommend a Toshiba Repair Facility to come out and diagnose it.
Hope this helps,
Convergence amp ic bad http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html Sony Convergence http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/ http://www.techlore.com/article/19631/Sony-Convergence-Procedure/
Sounds like a resistor in the convergence circuits or covergence amp ICs them selves. Usually the ICs will distort the picture. My guess would be the flame proof resistors near the ICs 1 or 2 may be oen. Let me know if you need anything further.
Convergence amp ic bad http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html http://www.hdtvoice.com/voice/showthread.php?t=28929 Or send to ptscorp.com http://www.hdtvoice.com/voice/index.php?s= good luck
please mark the post with a fixya
Repair will require technical and mechanical
skills.The red convergence IC will need replacement,which will require the chassis to be removed.After IC change,alignment in the
servicer menu may be needed.Go slow--Remember,
above all else,do no harm.You have a great tv,so my suggestion is get a senior tech on this one.
It is a good possibility you damaged something on that PCB that had the IC's, I like to use an upgraded chip the STK394-160e that is designed for HD signal stresses. I dont know why they ordered the convergence board but I suspect it would have been ok, there are also 2 jumpers that need soldering JW10 and JW50 that supply power to the chips and they REQUIRE resoldering or it will fail again. Might try reseating the RED CRT board, check for cables that you may have unhooked to see if they are not seated in their sockets properly, double check every wire you unhooked, Make sure you used a Silicone Heatsink Compound on to the back of the IC's. I dont know what all you unhooked, but check the wires going between the CRT Boards. Check for cracks in the boards to make sure they werent flexed to much. Good Luck.