Question about Toshiba 57H81 57" Rear Projection Television

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Have Virtical and horazonal lines ....Please help

I have had a new main board put in under warranty. Now when we are watching the tv it starts getting virtical red, and green lines,depending on the back ground, about 1/3 and 2/3 of the screen. there are blue line all over. Then the horazonal lines start flashing all over the screen. It has a perfect picture when it is first turned on.

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· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Posted on Dec 19, 2007

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Posted on Jan 02, 2017

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I have a Samsung television that went black today. I thought it might be the station so I swithced it and the problem was still there. Can you help me find the part I need to fix it?


The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size..

May 12, 2017 | Samsung Televison & Video

1 Answer

Sony wega blue spots lcd tv 55 inch flat screen


I assume those blue spots are appearing in a line? Regardless, unless its under warranty, its time to start looking for a new flat screen. Otherwise call them for service, sounds like it will need a new main board

May 15, 2014 | Office Equipment & Supplies

2 Answers

My rca flat screen tv has a blue tint to the screen that comes and goes. It is like 5 lines of blue on the screen. There is one line that comes down the left side which is not blue. Basically the picture...


Hello:
The symptom you are describing could be one or two things, if it works for a while then starts to act up this coulb be an indication of a bad solder joint. But it may also be the CRT or the picture tube. Try tapping on the sides when it starts to act up while watching the picture to see if it clears when its tapped on. If it does then you have cold solder joints on the main board, this is a easy fix. IF it does'nt then I suggest you contact your store for warranty info to have the CRT replaced or the television exchanged. Since its still under warranty you might as well use it before it expires...

Jun 09, 2010 | RCA TruFlat 27F520T 27" TV

1 Answer

Panasonic 50PZ80U vertical lines


if these lines are solid black then your panel is probably bad. being six months old it is still under manufacturer warranty. they should be able to fix it for you for free. if they are not able to assist you then there is a way that you can check to see if the panel is bad. mark on the tv with a sticker or peice of tape where the lines are. then take the back of the tv off. find out where the lines are and it should line up with a ribbon cable. unscrew the ribbon cable and take it loose. it will be attached to the panel so dont pull to hard. there will be what looks like a little dark strip on the ribbon cable. these little strips have micro chips in them. look closely at the ribbon cable and if you see and arc spot or a burn spot then the panel is bad. look at one that is good for comparison. if this is bad and you are not able to get it warrantied then the tv is not worth fixing. the panels for these things cost about as much as a brand new tv would. hope this was helpful.

Jun 07, 2009 | Panasonic TH-50PZ77U 50" Class Plasma HDTV

1 Answer

PROSCAN 42' LCD COLOR TV MODEL 42LA45H


I am sorry Sir, the display panel is bad. If you purchased it new, it should under factory's warranty. Please call Proscan for a warranty repair.

Proscan Customer Service:
1-800-968-9853 (US and Canada)

May 31, 2017 | Proscan 42LA45H 42 in. LCD TV

1 Answer

Convergence problem ,Help Please


Something is not right here. Is there any possibility that you can get the circuit designation (Rxxx) of the resistors that were "incorrect"? I am not aware of anything like this that can cause the "memory to be erased". The only memory in that area would be the factory convergence settings which can be modified from the service menu. Please try to supply the resistor IDs and I'll check on this.

Thanks,
Dan

Feb 13, 2009 | Panasonic PT-51HX41 51" Rear Projection...

2 Answers

Insignia NS-LCD37-09 turns on but no image


If your TV is less then a year old, still under manufacturers warranty. If not under warranty the defective parts could be the power supply or the back light inverter board. Both boards can be replace easily.
The way to know if you have a defective backlight inverter is by shinning a light from a flash light near the screen with the TV on and check in a 45 degrees angle if you have a dark video in the background, if the video is present then you have a backlight board failure. If no video, then is a power supply failure.
I have both boards if you want to buy them.
Let me know if you require further assistance.

Jan 08, 2009 | Televison & Video

1 Answer

Vizio 37" LCD color problem!


is the TV still under warranty. if it is I would call Vizio and request a main board be switch and if it is not under warranty I would call a TV Repair shop and have them put in a Main Board.

Mar 04, 2008 | Televison & Video

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