Question about Toshiba 42H81 42" Rear Projection Television

1 Answer

Toshiba 50 inch projection

Have a Toshiba 50 inch rear projection that will distort and bend in the center. Shortly there after tv turns off. Requires cutting power from unit to get back on. May take one time or several to get iot to finally work. Any suggestions?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 934 Answers

In the convergence circuit, where the amps themselves are soldered to the foil side of the board, may be ring cracked. What you're doing by forcing it to start is causing an arc to form between the crack until the heat has built-up sufficiently to expand that joint and make contact. Eventually you will burn out the amps, overheat the return resistors and/or open some of the pico fuses in that circuit and send the repair bill that much higher... Better to pull that board, get out a good soldering tool and some solder and a good pair of reading glasses and locate / resolder those joints that are ring cracked...
Bill

William Rayburn, CET
Premium Technologies
PO Box 442
Long Beach, WA. 98631
360-642-4993

Posted on Nov 07, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My rca toshiba 50 inch projection tv is showing a 3d color curve


Need the model number to help as I am not sure of you have a RCA or a Toshiba

Dec 19, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

I have an RCA 50 inch projection tv that all of a sudden looks like the picture is warped on the screen.I can not make screen adjustments with the remote to solve it.


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

Jul 13, 2009 | Toshiba 50H72 50" Rear Projection...

1 Answer

MITSUBISHI VS-50801 50" TV


Bad convergence IC possible - It's cheap if you do it your self, expensive if you take it to a repair shop. My Toshiba finally came on and stayed on after the IC's burned completely up and smoke poured out the back. Then mine stayed on with a distorted image. A good place for parts -> http://www.electronix.com/catalog/default.php/cPath/6

Apr 29, 2008 | Mitsubishi VS-50805 50" Rear Projection...

1 Answer

No sound


make sure the external speakers are not turned off

Apr 28, 2008 | Toshiba TZ50V51 50" Rear Projection...

1 Answer

Distorting


if it is wavy lines across the top it is probably the scan converter/ hyper bd they are becoming hard to find/expensive you can repair them but it requires many surface mounted capacitors and requires some VERY skilled soldering.

Apr 23, 2007 | Toshiba 57H82 57" Rear Projection...

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

Related Topics:

75 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

68323 Answers

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

Answer questions

Manuals & User Guides

Loading...