Question about Hitachi 50UX57B 50" Rear Projection Television

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Hitachi 53uwx10ba rear pro

I have a older rear projection tv that has a problem with the blue lining up with the red and green on the screen. Ive tried to cleen the lenses and adjust them by loosening the nut and moving the lens but the blue is still way out to lunch ....... Im stuck please help

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  • Anonymous Apr 17, 2008

    the color tubes seem out of line.

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Set needs convergence ic's changed (STK392-110). Also look for resistors slightly discolored around STKs, usually low value like 1.5 ohm, 2.7 and 3.3 If you have an ohm meter and a soldering iron, solder and solder wick, you can attempt this yourself. Remove rear cover of set. Mark and unplug connectors from convergence board, including small jumpers that interconnect boards. Remove board, turn over and unsolder pins of conv. ic's using solder wick. Unscrew mounting screws and pull chips out. Careful, white heatsink compound is messy. Apply new compound to new chips if needed, making sure not to bend small pins. Slide chips in and screw in mounting screws. Flip board and solder in ic's making sure all pins came through. Check for small resistors around ic's being discolored,(usually 1.5 ohm) These are critical and a few tenths of an ohm change will cause extra alignments needed. Replug and secure board. Double check that all connectors are in place and power up unit. If you changed any mechanical adjustments to tubes or lenses, change them back now and try auto convergence. Service adjustment procedures are avail. online if needed. Good luck!

Posted on May 29, 2008

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My hitachi 57f510 has been turning orange am I able to fix this and how.


If I remember correctly, There are 3 projection globes in the back of a rear projection TV. I would say 1 of the globes has failed which is gives you an incorrect colour balance on the screen. There is usually a red, green and blue globe. Its probably either of the blue or green one which has failed. Someone else on fixya may be a bit more conversant with rear pro TV to confirm this.

Apr 19, 2015 | Hitachi Projection Televisions

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Hitachi projection tv 53uwx10ba - the Convergence ICs were replaced. When the PDKP bridge between convergence board and 2nd board is plugged in, it makes a noise. Kept that unplugged, the picture is...


Did set have this problem before you replaced the STKS?

I know these sets very well. If problem is different in any way from before you replaced chips.......double check all soldering or one of the new chips may be defective.

The more you tell me the better I can help.

regards, SD TECH

Aug 18, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Hitachi 53UWX10BA dynamic convergence works but blue is blurry


I know this set very well---you are saying convergence adjusts ok everywhere? If you understand that the blue is usually de-focused a little----there are only two ways to adjust the focus of each tube-----

1.) Behind the front speaker grill there is an inspection plate---with it removed you will see a small black plastic block with 6 controls on it; it is the MASTER SCREEN/ FOCUS BLOCK

2.) THREE of the controls left to right are Screen controls(red, green and blue) and the other 3 are FOCUS--IT IS ALL black and you need to look close to identify which is focus and which is screen---you are looking for the BLUE focus control(one of the 6)

3.) With the convergence grid on screen cover the RED and GREEN lens in the set and try to adjust the focus of the blue(I presume you know how to put the set into the Convergence mode?

4.) The only other way to adjust the Blue focus is from the back of the set---with the Red and Green lens covered up place a blanket over the top of the set that covers the whole screen--from the back of the set you will note that all three of the black focal lens have a wing nut---with the convergence grid up and only blue lines present(Green and Red lens covered with a cloth) look from behind the set at the grid---loosen the wing nut on the blue lens and slowly slide the lens left or right until the blue has the best focus possible----if it will not adjust with the focal lens or the front focus control you have a circuit problem.

I do this here for free and if this information helps you take a minute and give me a vote here. If you have any questions or need advice reply to this posting here and I will assist you.

SD TECH

Sep 14, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

I HAVE A HITACHI PROJECTION COLOR TV. MODEL 53UWX10BA 52". I JUST MOVED THE TV BY TRAILER FROM ONE TOWN TO ANOTHER, ABOUT 25 MILES, WHEN I PLUGGED THE TV BACK IN AND HOOKED UP THE CABLES, THE PICTURE WAS...


Replace the convergence Ic's with a kit that is available through your local parts distributor

You must replace all resistors in the kit
If you are not good at soldering and de- soldering have a local tv shop do it for you

Good luck

Jan 27, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

HITACHI 53SBX59B, projection lights don't line up.


It sounds like bad solder connections in the convergence output circuit. It may also be an intermittant convergence output ic which will need to be replaced.

Jan 04, 2009 | Hitachi 53SBX59B 53" Rear Projection...

1 Answer

Green cruve line


Good Day;
Suspect Convergence IC's STK4274, part Number 2003191. Replace all three IK04(red), IK05(green), IK06(blue).
Good Luck, big IRISH.

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1 Answer

Hitachi projection tv


I would change both ICs STK392-110 and also the 3.3ohm 1 watt resistors and the 1.8 ohm 1 watt you would need 2 of each resistor. Then your convergence would be new again. You can get replacement ICs and resistors at the following link with free shipping and free instalation instructions with pictures.
http://servicemanuals.vstore.ca/

Jul 01, 2008 | Projection Televisions

1 Answer

Green lines along top of Hitachi 53UWX10BA


convergence ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Jan 02, 2008 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

Picture Problems with Hitachi 53" Projection TV


most tv shop's will replace convergence ic's,which your tv needs.Thepart number is stk392-180 very common You need 2 plus poss resistors,3 bucks apiece

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