Question about Toshiba 42HP83 42 in. HD-Ready Plasma Television

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Toshiba 42hp83 comes on then goes to green screen then goes black with pixel dots on screen

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Did you ever find a solution? Mine just started doing this last week.

Posted on Oct 29, 2010

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Posted on Jan 02, 2017

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I HAVE RED DOTS ALL OVER ANY BLACK COLOR OF THE PICTURE


Could be whats known as dead pixels, this is tested be showing up a black or white screen. Microsoft paint or word will do. If an area always has dots then dead pixel. However if it doesn't constantly remain a dot then, some-thing else. Dead pixels come about due to age.
A technician will be able to diagnose your problem by performing white screen test.

damnor01

Nov 17, 2010 | Acer AL1715 (Black, Silver) 17" LCD...

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My Toshiba 42hp83 has a rectangular area of the screen that changes colors randomly from the left-center of the screen down to the bottom. After about 20 minutes of the TV being on, the problem usually...


We had a similiar issue with our SAMSUNG Plasma TV. It had a 2'or 3" vertical bar of random colors on the right side of the screen. It would also go away but then come back. Fortunately for us the TV was still under its original 1yr manufacturers warranty. We called the customer support and they scheduled a service call. The TV repair man took our TV to the shop and replaced the defective components. It took about 3 weeks for the repair.

Nov 06, 2010 | Toshiba 42HP83 42 in. HD-Ready Plasma...

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What does it mean by dead cells?


I assume this is related to your LCD monitor.
I think you mean dead pixels. The LCD monitor has tiny pixel elements, one for each red, blue, green color and each one of these colored pixels are turnes on by a transistor. When a transistor fails then the colored pixel it controls does not light up. This is a dead pixel and it shows up as a tiny black dot.
If the screen displays a blue screen, a dead blue pixel will appear as a tiny black dot in the blue screen.
You normally would not notice a few dead pixels unless they are grouped together.

Sep 20, 2010 | Hanns.G Corporation HW191D 19" LCD Monitor

1 Answer

Screen went black and power light flashing on a Toshiba Plasma 42HP83


MAYBE POWER BAD POWER UNIT PART NO:

Manufacturer Toshiba Part Number 23122442 Description POWER UNIT ASSY, P

Jan 19, 2010 | Toshiba 42HP83 42 in. HD-Ready Plasma...

1 Answer

My 42 inch toshiba plasma tv. about 4.5 years


Ur backlight video inverter board is dead or defective,need it replaced.Tries these websites Shopjimmy.com or Partstore.com or Ebay.com.

Sep 01, 2009 | Toshiba 42HP83 42 in. HD-Ready Plasma...

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Black line half way down the center of the screen,about 1.5 inche


There's a 'data control' and/or 'address' problem that's developed. Pixels depend on voltage, control, and data coming too their designated address.

A digital circuit feature called a 'DATA_ADDRESS_ BUS" are responsible for 3 criteria: Delivering voltage, control, and data to each pixel in less than a second.

1) If voltage fails the pixels don't light up. They appear black in color (their 'off 'state)....numerous pixels that don't light up look like a black line. But their actually individual pixels with no voltage.

2) If control fails then all pixels are white in color (their 'on' state). Without control the pixels can't adjust properly to high or low 'state', meaning brightness and dimness. This looks like a white line vertically on the screen.

3) If data fails then the pixels can't adjust to the proper color at the proper time.
This appears as a line that changes color out of sync with the entire picture.


Have a technician look at the pixel address registry circuits. As well as control and linear circuits....the problem is somewhere in there!

Jun 13, 2009 | Toshiba 42HP83 42 in. HD-Ready Plasma...

2 Answers

Yes i have a black dot on my new 2008 toshiba notebook.Do you know how to fix it.


If it is just one pixel that is black, you cannot do anything about it. It is what we call a "dead pixel". The best thing to do is to send it back in to the manufacturer and get a free replacement.

It's not the answer you wanted to hear, but again, there is nothing you can do about it.

Aug 11, 2008 | Toshiba Computers & Internet

1 Answer

Toshiba regza lcd 46x3500


This is what is known as a dead pixel. If you have a standard wide screen lcd monitor it has over 1 million pixels. It is not super un-common for one to go bad. It will either always be dark or in your case always be lit. It is not worth it to repair, and in most cases unless you have multiple dead pixels with in a square inch of screen, it is not covered under warranty either.
Each pixel is individual and the problem will most likely not spread.

Jul 08, 2008 | Televison & Video

1 Answer

Green line on each side of the plasma display.


Anybody knows how to reapair about vertical color- stripped lines appeared on screens and some trace of greenish images exist after each images changing, my TV is Toshiba Plasma Color 42HP83, I appreciate , thanks

Jun 05, 2008 | Toshiba 42HP83 42 in. HD-Ready Plasma...

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