Question about Toshiba 43H71 43" Rear Projection Television

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Aging 43H7143 This tv is almost 7 years old and is experiencing multiple problems. 1. touch focus not working (when used it prompts touch focus error) 2. screen is also showing constant red and green vertical lines when watching dvds or cable tv. 3. tv screen also showing double projection of characters and objects with constant white fuzzy horizontal lines. 4. tv also goes out to a black screen when power is still on (will come back on if tv is cut off then on.) Gteatly apprieciate solutions or possible parts replacement.

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Re: aging 43H7143


Posted on Jan 23, 2008

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We have a theater-wide toshiba projection tv. It is about 7 or 8 years old. When we turned it on, the colors are shadowed in white, blue and yellow. We ran touch/focus and it said error. Please advise.

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from and do the repair yourself. Its a fairly easy DIY fix.

Aug 11, 2011 | Toshiba TheaterWide 52HM84 52" Rear...

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7 year old sony projection tv. suddenly multiple video inputs stopped working. only one input works but no sound. no video even off cable.

Can you please provide us the brand and model of this unit so we can help you better with your concern...

Oct 21, 2008 | Projection Televisions

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Sony kp51hw40 has green shadows and on edges in pictures and blue flickers on and off, tried all adjustments including screen, focus, and menu??? no luck

The CRTs in this model of TV had a problem with internal leakage. The blue was usually the first to show the symptom (flicker). Because all 3 CRTs are connected to the same high voltage source, when 1 acts up, the other 2 suffer as well. You need to replace the Blue CRT. However, this TV has some age on it... 1 tube will lead to 2 tubes, and 2 tubes to 3... They only last about 7 years. If you love the TV, replace all 3 (about $200 each). I recommend replacing the Red and Blue first, adjusting the geometry and convergence to the original Green. Then replace the Green, adjusting the geometry and convergence to the new Blue and Red.

Mar 15, 2010 | Sony KP-51HW40 51" Rear Projection...

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KP53S35 when tv turned on picture was

You TV has a bad CRT, a red CRT by the sounds of it. This TV is rather old, perhaps 11-13 years of age? Your TV has given you many years of service and I do applaud you for the care you have given it and the TV for it’s reliable in your home. The trouble you face with a rear projection CRT set of this age is that you can’t just change 1 CRT tube and expect it to be reliable and produce a good picture. All 3 tubes should be replaced, as they have all aged the same. The lives of these tubes are only about 7 years. A tube is not any easy or inexpensive repair on any RPJ TV. When you are faced with the cost of 3 tubes, which may not even be available in the market place… You should consider retiring this old friend and keep the manufacture in mind as you make a new purchase.

Mar 14, 2010 | Projection Televisions

1 Answer

Red and green images surrounding the programming -

Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} The best advice I can tell you at this point is to go to and order the complete convergence kit for your model of TV set, no need to search and order multiple parts from different sources and pay multiple shipping fees! The kit comes with original Sanyo STK IC’S , not those cheap aftermarket or china made IC’S full pictorial directions, the thermal paste, resistors, the correct Pico fuses, AND free live on-Line tech assistance in case you run into a problem with the repair. They ship out 2 to 3 day Priority mail, the next day in most cases GOOD LUCK!!!
Larry Dillon, senior tech/

Jul 06, 2009 | Projection Televisions

1 Answer

Touch focus error will not correct

If the touch focus isnt working and the picture has a 3D look you will need to change the conversion ICs. This is a straight forward repair just unsolder the old and solder in the new. You will need to replace both. They are located on a large aluminum heatsink and they will have STK numbers stamped on them they are quite large easy to find. The numbers will be something like STK392-110 or simallar. Let me know if you need anymore info.

Mar 23, 2008 | Toshiba 53H71 53 in. Rear Projection...

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Most likely a digital processing error, since it happens on multiple inputs. Service Time.

Shouldn't happen on a <2 Yr old component.

Feb 15, 2008 | Samsung HLR5067WX 50" Rear Projection HDTV

1 Answer

42H81 touch focus error

check for bad solder connections on the connvergence ics if that dont fix it then replace them

Nov 01, 2007 | Toshiba 42H81 42" Rear Projection...

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Blue ghost

If you have the ability to work on solid state electronics and know how these circuits work, you will need to replace the convergence IC's in this TV set. If you do not, call in a pro to assist you in this repair. Good Luck

Jun 20, 2007 | Toshiba 43H71 43" Rear Projection...

2 Answers

*** I have to configure Colors with each power on. ***

The six controls you appear to be adjusting are the screen and focus controls for each of the three picture tubes. These usually only have to be adjusted as each picture tube ages or when replaced. You may either have a defective "focus block" i.e. the black box you have been adjusting, or the CRT's themselves may be going bad at this age. You will probably be money ahead to just replace the TV with a new HDTV set. At 13 years old, it shouldn't have much life left in it anyhow.

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