Question about Toshiba 50H82 50" Rear Projection Television

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Board to pull stk392-110

How hard is it to pull the board in order to replace the STK392-110. and which one of the two is for the blue conversion??? When looking at it from the rear of the TV is it the first one or the one behind that???

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  • Anonymous Jan 01, 2008

    which conversion chip is for the blue conversion if looking from the rear of the tv. The first one or the second,

  • stingrayb Mar 22, 2008

    Yesterday, the TV colors, mostly the red went off kilter and does not line up at all. The words go wavy and downwards to the bottom right...I have the Toshiba 50H82 as well and the red cross hairs do not line up at all on some of the locations when trying to adjust. I tried the touch focus... that failed... the failure to touch focus came on in red.....the blue seem to line up in all locations, but not perfect. Do I need to replace both IC's and resistors? Where do I get the parts?



    Thanks,

    Ray

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  • 308 Answers

Make sure you check for bad solder connections on each of the brown or black jumper wires near each chip before changing them both. That may be all that is needed. Be sure to apply good heat sink compound to the replacement IC's, and never replace just one.

Posted on Feb 02, 2008

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1 Answer

Replacing STK392-560 on sony KP-51HW40


If they are open replace them. Do you have an OHM meter?

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Conversion problems


What model number. Likely your conversion amplifiers and a resistor or two have gone out. Most Toshiba's use STK392-110 which can be replaced with STK392-120. You always replace both even if only one was bad.

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Blue&yellow double lines on hitachi 53uwx10ba


Electronix Online - Electronic Parts & Accessories for Technicians and Hobbyists
------------------------------------------------------
Order Number: 35987
Detailed Invoice: http://www.electronix.com/catalog/account_history_info.php?order_id=35987
Date Ordered: Monday 09 October, 2006
Ordered from IP Address: 65.33.214.137

Technical forum on website had link for Hitachi HDTV convergence board problems

Products
------------------------------------------------------
2 x Semiconductor STK392-110 (STK392-110) = $11.98
------------------------------------------------------
Sub-Total: $11.98
Tax: $0.00
Shipping: $6.30 via USPS priority Mail 1 X 0.7
Total: $18.28

Sits on soldier stand, and will take a good soldiering job to attach. I replaced both since they are only $12 for two of the STK chips.

Sep 09, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Im having green and blue conversion issues on my JVC 48wp34.please help


You need to replace both STK392-110 convergence ICs, you can get replacements at the following link with free installation instructions and free tech support so you can do the repair yourself.
http://servicemanuals.vstore.ca/

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RED Convergence Alignment issue


Replace both STK392-110 Convergence IC's with Toshiba or Sanyo quality................No cheap IC's !!!......................T.

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1 Answer

Replaced Convergence IC's and now no power


is this a typo-replaced Stk392-120 with Stk394-160 because you cannot interchange to that number IC you can go to a STK392-160 also you cannot check resistors in circuit because you will get the resistance from the circuits around them you have to lift one leg out of circuit to test them.if you need further help or further information pls let me know

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1 Answer

Blue Convergence Problems


You will need to replace the conversion IC that controls the blue STK392-110 or STK392-120 however these are so cheap I recommend replacing both as the red wont last much longer. As they usually wear out around the same time. Heres a link where you can buy the replacement ICs and they include step by step instructions on how to install the new ICs.
http://servicemanuals.vstore.ca/

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Confirmed Hitachi subs all STK392-110,120 and 150 to
STK394-160 ....I use Hitachi part number CZ 01341 = no re-calls
..................T.

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1 Answer

Replace conversion board


Signal / Main PC board AKA the "A" board is send for repair only = PTS corp ....Part # TNPH 0370.....250.00 Approx.
OR
Replace IC7001 & 7002....STK392-110 and inspect resistors.
If you have good electronic repair skills,you might attempt to
DIY...otherwise, hire a senior tech,if possible...............T.

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1 Answer

Can't adjust blue lines on grid for convergance


I would take a look at the entire circuit board the STK chips are sitting on... I have the same problem with a sony KP-57wv700 and it turned out to be the high voltage controller for the crts got fried... part # BA9759F and it can not be replaced as the entire circuitry around it got toasted also... I just ordered entire circuit board. mine was the D board in this case...

BTW, did you check or replace the pico fuses? 3 orange ones on each STK circuitry. Check their resistance with an ohm gage should show continuity. My case they were 3.15 A each...

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