Question about Toshiba 55H70 55" Rear Projection Television

1 Answer

Toshiba projection TV Flickers

Screen flickers caving in from sides and then shuts down

Posted by on

  • 1 more comment 
  • gtracy2117 Feb 18, 2008

    Are there three chips for red, blue & green?

  • gtracy2117 Feb 18, 2008

    I had convergence chips replaced, and the repairman resodered suspect connections. TV worked for a couple of months with perfect resolution and then sudently went back to the same flickering and shutting down. It has been in a local toshiba dealer repair shop for two weeks and they say they cant find the problem. They said they replaced a couple of bad capacitors but didn't help. They suggest I buy a new TV?

  • gtracy2117 Feb 18, 2008

    What would be a good time to call you?

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 211 Answers

You may have bad convergence chips in the set. I have worked on some with similar problems and replacing the convergence chips was the solution. Good luck and I hope this has helped.
Ed
NC Electronic
Mills, Wyoming

Posted on Feb 18, 2008

  • 1 more comment 
  • Ed Meshechek
    Ed Meshechek Feb 18, 2008

    Unless you have a older set ( 6 years old or older in most cases ) there are only 2 convergence chips. The number normally starts STK. ( ie: STK 392-020 ) . If you have an older set, you may have 3 chips or maybe even just one controlling all three colors. I hope this has helped.

    Ed

    NC Electronics

    Mills, Wyoming

  • Ed Meshechek
    Ed Meshechek Feb 18, 2008

    I just sent a response on another of your posts. If I can help more, call me at my home 307-266-4675. I would be happy to help in any manner possible.

    Ed

    NC Electronic

    Mills, Wyoming

  • Ed Meshechek
    Ed Meshechek Feb 18, 2008

    Call right now if you'de like...

    307-234-6177.



    Ed

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How to fix Toshiba Rear Projection Television


check colour wheel needs replacement bearing are worn out

Jul 13, 2013 | Projection Televisions

1 Answer

When I turn the tv on it flickers and there is a


Cold solder joint on the board. Time to call a TV tech..

N Sabre

Nov 08, 2009 | Toshiba 50H82 50" 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

55" toshiba projection screen TV, front screen caveed in


get new ic's and replace them the kit is like $30 if you are good at soldering

Apr 03, 2009 | Toshiba TZ55V61 55" Rear Projection...

1 Answer

Picture flickers on all inputs.


If your having pixelation,try disconnecting other tvs
from the wall.you may have a noise or DB drop off or surge issues.check all splitters from the tube to the soffit of your home.If you find one upside down out side ,water maybe be getting in.Remove all snap adapaptors,screw on only.Splltters are
cheap,,easy way is spend $3 extra a month to have your cable Co repair or replace any seeping cables or adaptors and/or splitters.

Feb 05, 2009 | Toshiba 46HM95 46" HDTV

2 Answers

Toshiba 42H81 - Screen flicker


Since the problem initially would correct itself, it suggests a poor connection somewhere that "heat" would resolve. If you can solder, try resoldering any joints that appear to be grainy or have rings. Please note that these sets will retain high voltages that can be dangerous even when unplugged. If the resoldering fails to resolve the problem, let us know and we'll look further.

Thanks,
Dan

Dec 31, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

Projection TV keeps shutting down


Good Day;

Sounds like you have a bad green picture tube that has failed. To check this out; remove front speaker grill, remove small panel, you will see three CRT's (pictue tubes) sticking down, remove the little board on the middle tube then restore power. If TV stays on more then likely the CRT is bad but not always the driver on board could also be bad, check voltages.

Good Luck, big IRISH.

Sep 05, 2008 | Mitsubishi VS-45607 45" Rear Projection...

1 Answer

Flickers caves in on sides then shuts down


I can understand the frustration of the repair shop, as getting help from Toshiba is almost non existent. When the boards in any big screen gets hot and used, many components on the board degrade and in your case, it sounds as though the fix would be a replacement board. Unfortunately, you may not be able to get one. If your local repair shop can't find the problem you might ask them for the board number and do some research on your own for a board. Most wholesalers will sell to the consumer if you have a credit card, and if you can find the board, have your local shop install the new/refirb board and do whatever adjustments are necessary. Good luck. I hope this has helped in some way
Ed
NC Electronics
Mills, Wyoming
Have a Great Presidents Day

Feb 18, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Fuzzy screen


You have a defective Hyper Board......call a pro

Jan 01, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

Tv problem


Hi,
I just serviced this model, same problem as noted. I did a resolder job on the power/drive PC board. This was NOT the problem! The problem acts like an electrolytic capacitor issue or horizontal drive amp. Once I get my hands a service manual & schematics, we'll resolve it. I'll post my results AFTER Super Bowl.

Rick Macy
BC Electronics
Macy41@aol.com

Dec 18, 2007 | Toshiba 50H72 50" Rear Projection...

Not finding what you are looking for?
Toshiba 55H70 55" Rear Projection Television Logo

Related Topics:

150 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

68153 Answers

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

Answer questions

Manuals & User Guides

Loading...