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TOSHIBA TP48C90 CONVERGENCE ALIGNMENT PROCEEDURE

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Can you tell me how to operate the digital array? I can't get all the crosses to maych up. I have a 43 inch rear projection Hitachi.
Thanks,

Pat

Posted on Apr 05, 2009

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Ihave a toshiba 43 inch hd 2002 rear projection the picture has shiffited to the right can I fix this


This tv have a problems known as a convergence problems,it dead.The tv have colors lines R,G,B mis alignment,have colors shadows picture or 3D picture? The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,require changing to solved the tv picture convergence problems.The shop,will cost u $300-350 for parts and labors.

Oct 16, 2010 | Toshiba 51H84 51" Rear Projection...

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NEED DYNAMIC CONVERGENCE PROCEEDURE


Dear Sir:

Here is a link for the manual for this specific tv which I believe provides all of the information that you need

http://www.retrevo.com/s/Toshiba-TP48C90-TVs-review-manual/id/283bh828/t/1-2/

I hope this helps you fix the problem, if not, please feel free to post more on this topic. Thank you and Good Luck!

Mar 21, 2008 | Televison & Video

1 Answer

Toshiba51hx83 convergence problem


Sounds like your convergence ICs are faulty If you cant move both red and blue in all 4 directions its usually your convergence amp ICs. They are prone to failure as they operate at such high temperatures. If you need any further info on this proceedure please let me know.

Jan 21, 2008 | Toshiba 51HX93 51" Rear Projection HDTV

1 Answer

My Toshiba projection screen TV the picture is bowed and the colors don't line up


3d colors not lining up poblem dicates "convergence issues.. bowing piture may indicate complete faliure of convergence alignment cuircits... depending on model the most likely cause will be 2 micochips (ic's called stk<s)

Aug 23, 2010 | Toshiba Televison & Video

1 Answer

Toshiba TN61x81-- after convergence IC's replced


Please don't be offended by my suggestions if you are experienced at circuit repair.
You may have a cold solder joint or bridged joint. Check and re-check your connectors for placement. It is normal to have to adjust the convergence and focus after replacing the IC's. There should be a row of focus knobs (ususally covered by a piece of black tape) with the screen controls.
The convergence IC's won't affect the visibility of a color only the alignment.

Sep 21, 2009 | Toshiba TN61X81 61" Rear Projection...

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Red and blue convergence wont line up. What should i do.


convergance can be tricky and you should follow a manufacturers proceedure from a manual.

most specificaly start with the green H and V Linearity and center , then the Red and Blue

Projection TV's and Component Video RGB have their Horizontal and Vertical Sync signals on the Green Component..

There may be other reasons for their specific order of operations within a calabration proceedure such as your 'RGB convergance alignment'

Jun 16, 2009 | Hitachi 43FDX01B TV

1 Answer

Toshiba TP48C90 Convergence (replaced ICs, worked for 2 days)


Well, my thought is that there are a ton of knock off generic convergence IC's out there that usually hold up as long as yours did. Professionals like me will only use Sanyo original STK's. The counterfeit STK's out there are everywhere. Do some research on the web to locate Sanyo originals, they are out there.

Jun 11, 2009 | Toshiba Televison & Video

1 Answer

Hitachi 60UX55K color alignment issue?


In this case you will need to replace the convergence STK ICs to restore the convergence. The resistors can be measure with an ohmeter to check their values.
Let me know if you need further assistance.

Oct 17, 2008 | Televison & Video

1 Answer

Toshiba 42H81 42 in. Rear...


If you are referring to the convergence alignment of red,green and blue........will require technical and mechanical skills.....
1) Pull chassis
2) Replace both STK392-110 convergence IC's
3) Reset alignment as needed........................................T.

Nov 23, 2007 | Toshiba 42H81 42" Rear Projection...

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Toshiba 42H82 convergence problem


Replace STK convergence IC's w/OEM or better parts.Senior tech soldering ability needed. Ex==Steel jumper wires feeding b+ to conv. IC's need resolder to prevent call-back.Also, best re-alignment done in service mode==consult service literature.

Sep 19, 2007 | Toshiba 42H83 42" Rear Projection...

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