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Hitachi projection Thank you from the start. I have a hitachi projection that had a ic covergence problem. Fixed it for $700.oo .It is now doing the same thing 2 years later[that you see on tv screen\ picture]. I was going to throw it away untill i found this site. THANX again. I can see that the ic's have been replaced with STK392-150. I do not want to spend crazy $$ on this tv again. Can i fix this myself ,and is it even the same problem as before just because it looks the same ? How much are a pare of these ic's and do they make an upgrade of the upgrades or is something else causing the IC's to go? thank you Mike

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These ICs run about $20 each. If you can solder, you can replace them. Make sure that you use plenty of heatsink compound on the backs of these when you mount them. This is the white stuff between the STK and the heatsink.
Good luck and keep us posted.
Dan

Posted on May 12, 2008

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Posted on Jan 02, 2017

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Magic Focus button will not line up picture. Red and green colors shadow images.


The tv have a problems known as a convergence picture problems it is dead.The tv have any colors lines like R,G,B mis alignments,tv have any colors shadows pictures or 3D pictures look alike?Yes,than the tv convergence board it is dead and the causes of these problems.The tv convergence board must have to repair like replacing like 2 STk covergence ICS and some or all of it resistors too.To fixed the tv convegence board to solved the tv convergence picture problems.The tvs shops will cost u like $300-350 for parts and labors.

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This tv have a problems call convergence,it dead.The tv convergence board must have the 2 STK convergence ICS and some or all it resistors are dead.These parts must change to solved covergence problems.The shop will cost u $300-350 for parts and labors.

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Colors drop- similar to convergence problem


no i think he is taking u for a ride. u just need convergence ic and what happins is sometimes tv service centers will use sup replacemeet parts in stead of original parts u need to replace the convergenc ic whit original parts.and if they donot put heat grease on the convergence ics and that is y they go out again. but i have never seen the digital convergance unit go bad. and this problem can be repaird in your home for 200. - 250.oo at the most marty

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1 Answer

Blurred picture


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.

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You need to replace the covergence IC's part numbers STK392-110 and check the associated resistors in the convergence circuit.

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1 Answer

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possible covergence ic are faulty and that your sensor is either sensing it or is at fault also,can the pattern be corrected with adjustment,if not your amps are the fault.

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