Question about Toshiba 42H81 42" Rear Projection Television

2 Answers

No remote control response (toshiba 42h81)

Right after I replaced the convergence chips on my TV, I put the tv back together and have no remote response, or sound. I pulled CKT board back out thinking I might of gotten a solder bridge or had forgotten to plug in a cable, or had plugged a cable in wrong. All is good there. Double, triple and even had a friend check all of these for me.
I then replaced batteries in the remote, no use. I even tried using a "universal" remote on tv. I cant even get my FiOS box remote to work.
All of the functions work fine if I use the onboard controls of the TV, except sound. Currently I am using sound via my home stero system.
Any ideas out there?

Posted by on

  • dsbotts Jan 05, 2009

    I have not checked that, and it totally makes sense to me. I will check right now, and let you know if this was the problem! |
    Thank you very much!

  • dsbotts Jan 05, 2009

    Sound working, but remote still now.. Will check farther!

    Thanks a MILLION!!

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I just had the same problem toshiba says to take batterys out and press all buttons on remote and reinstall batterys

Posted on Mar 05, 2009

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 22 Answers

Are you SURE the cables are right?? The cable for the remote sensor and the speakers are both 4 pin and can easily be swapped. The cable with the brown wire (speakers) will attach to the convergence/signal PCB on the far right edge, while the remote connector plugs into a connector closer to the center of this board.

Posted on Jan 05, 2009

  • kkolarik Jan 05, 2009

    It's possible the remote sensor was damaged by the miswire... no worries... the sensor is available @ Radio shack for less than $5.00. If nothing else wors, change out the sensor.

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Replace stk392-110 ic's in Toshiba 42h81 tv


Kits are available but price is not real cheap---basically you have to unbolt chassis and release some cables inside to get enough room to pull chassis back and put up so bottom faces rear of set.

In this model both chips are near the middle of the set inside--unsolder all 18 pins on each and the 4 pins that hold each heat sink in---you remove the sink with chip still attached--clean the white grease off, apply new and replace both chips.

Works best if put front chip WITH THE HEAT SINK ATTACHED back in first and repeat with rear sink---it means when you install you have to get 18 pins plus the four pins for the sink installed in one shot.

May not be a task for a first time person.

Jun 05, 2012 | Toshiba 42H81 42" Rear Projection...

1 Answer

Seems that the 3 colors are not aligned


Your TV most likely has one of two possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc

Dec 15, 2010 | Toshiba 57H81 57" Rear Projection...

1 Answer

Need help with tv


U replaced 2 STK convergence ICS right?U check all the resistors too,and replaced it right?The convergence problems usally reset it back by it self.If all convegence parts are replaced correctly,and finish.

Mar 17, 2010 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Toshiba TP43H60 Convergence Problem


This may sound odd but try moving the remote further from the set. I have seen similar issue with my 42H81.

Jun 01, 2009 | Toshiba TP43H60 43" Television

3 Answers

Red color distortion hitachi 46f500


Can't remember which this one uses but its right on the chips. Check your resistors too.

Apr 08, 2009 | Hitachi 46F510 46" Projection HDTV

2 Answers

Bowing at top and bottom, can't adjust convergence replaced IC


Your TV most likely has one of two possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Mar 22, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

My JVC model number AV-56WP30 has a flashing convergence screen



Your TV most likely has a Convergence Chip Failure but I have not seen that symptom before.

Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.

Feb 28, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Toshiba v43j22p 42" red shadows and lines over screen


6b5ee7e.png You may have a convergence problem. Here are some of the most common symptoms.

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

Feb 02, 2009 | Toshiba 57H81 57" Rear Projection...

2 Answers

Colour problem


6b5ee7e.png You may have a convergence problem. Here are some of the most common symptoms.

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

Dec 31, 2008 | Toshiba 42H81 42" Rear Projection...

2 Answers

I have a double picture on screen i could hear my TV but the color are off too with Sony RM-Y908 Remote Control? which is broke


You may have a convergence problem. Here are some of the most common symptoms and example photos.

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


2c07611.pngSolution


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

Oct 29, 2007 | Sony KP-57WS500 57" Rear Projection...

Not finding what you are looking for?
Toshiba 42H81 42" Rear Projection Television Logo

197 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

Dave Naylor
Dave Naylor

Level 3 Expert

834 Answers

The Knight
The Knight

Level 3 Expert

68157 Answers

Are you a Toshiba Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...