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I,M ELECTRONIC TECH.I HAVE A TOSHIBA TW40F80 PROJECTION TV,THE PROBLEM IS THE VIDEO IS IN AND OUT A LITLE BIT WITH DISTORTION IN THE VIDEO SEME TO BE CONVERGENCE PROBLEM BUT I,M NOT SURE THE SET USE THE STK 392-110

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Look inside tv look for two big chips they will have numbers on them telling you what they are !STK-392-110s 120s 150s- I always up grade with 180s.these are better ics

Posted on Jan 21, 2008

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Red and blues will not aligning on projection tv


You will first off need to get the training manual on this TV set, so you will know what this set is all about. The problem you have with your set is the convergence IC's need to be replaced, then you will need to understand the service manual so you can go in without destroying the set, and make small convergence corrections. The training manual is available here http://www.tacpservice.toshiba.com/TACP/training/TV/pjtv05f.pdf You will need to know how to solder, as well as certain terms used in this training manual. If you have no electronic background, I highly advise that you call in a pro to assist you in the replacement of the IC, but have this manual available to the technician, as it might save you a few bucks. Good Luck with this repair.

Jul 29, 2007 | Toshiba TW40F80 40" Rear Projection...

1 Answer

Hi i have a convergence problem bought tv 5 years ago 2 techs have looked at it and have replaced convergence sensor unit and digital convergence unit but now tech says i need a convergence board and not...


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

You can see more examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Feb 02, 2010 | Toshiba 51H83 51" Rear Projection...

1 Answer

I need part #2427365 for model 50ux14b


Visit website Encompass Electronics.com type in your model number if they have it they list it or Call 1-800-638-3328

Oct 05, 2009 | Toshiba TW40F80 40" Rear Projection...

1 Answer

Toshiba tw40f80 cannot adjust green and blue


ok, if you do have a sound problem it is separate from the convergence trouble; this set uses two STK-392-110 ic's. you need to change both and any of the resistors near them that may be gone or open---then adjust the set with the original remote--you can do the adjustments in the customer menu or if needed in the TECH menu-I can tell you how to get into that menu--if you have no sound from the speakers in the set that is a separate issue.

I do this here for free--if you have questions or need help reply here--if this has helped you give me a vote here.

Most of these sets with a convergence problem just need the two chips replaced and the set adjusted---you can buy both chips on Ebay for less than 14 dollars plus shipping.

Aug 29, 2009 | Toshiba TW40F80 40" Rear Projection...

1 Answer

Picture often flickers and image distorts every few minutes


The trouble is most likely in the Video processor. If the trouble looks like its tearing the video only from side to side it may be the line doubler circuit. Some of these boards are no longer available but a good TV tech may be able to componnent level repair it for you.

Apr 15, 2009 | Toshiba TP50H95 50" Rear Projection...

1 Answer

Toshiba tw40f80, replaced both convergence ic's, power light still blinks


Solder yoke plug and vertical IC connections.....try again.
Let me know.....T.

BTW....Tosh recommends STK-392-110's replace with -110T's
Toshiba OEM.....then there is no question about resistor value
change......

Aug 03, 2008 | Toshiba TW40F80 40" Rear Projection...

1 Answer

Tw40f80 toshiba


YOU SHOULD CALL YOUR THE TOSHIBA COMPANY FOR THEM TO FIX IT.

Jan 16, 2008 | Toshiba TW40F80 40" Rear Projection...

1 Answer

TV


Cable source problem?? Try playing a DVD or game or any
other source to see if pix cuts on/off.......T.

Aug 10, 2007 | Toshiba TW40F80 40" Rear Projection...

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