Question about Samsung HP-R4252 42 in. Plasma HDTV

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Bottom half of screen goes blank

Rlamkin, thanks for suggestion. Is the Y-board for top half of the screen or the bottom half? Also, for checking the loose cable connection, do I have to remove the back cover? Thanks in advance

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Take it to a repair facility, don't be a cheaps ***.

Posted on Jul 29, 2008

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Posted on Jan 02, 2017

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Sony Bravia flat screen TV when turned on has black screen. Green light on the bottom is lite up, electric plug is plugged into house socket, no picture only black screen.


If audio is OK, the fault is with its backlight section. If audio too is absent, the fault is with its digital main board. If you wish to get more details visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
http://homenol.blogspot.com/

Jan 08, 2017 | Sony Televison & Video

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Have a dark band horizontally across vizio tv. Appears to be a backlight, but not sure how to fix


Could be a bad CCFL lamp, if the set usess CCFL back-light system. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Jan 08, 2017 | Vizio Televison & Video

1 Answer

Samsung plasma TV model #pn42b400p3dxza problem with no image. The TV has sound but no image. I've tried using other components on the TV like RCA jacks with a separate TV digital tuner. Thank you


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.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
Check whether Va & Vs voltage come to the display panel, from the main power supply regulator board. If not, the SMPS board [power supply regulator board] is faulty.

Jan 08, 2017 | Samsung Televison & Video

1 Answer

WHY DID MY VIORE SCREEN RESIZE TO SMALLER SCREEN


Screen size depends on the broadcast signals aspect ratio, the TV adjusts for that automatically, the picture can have no bands or be banded top and bottom or on both sides.

Jan 07, 2017 | Viore Televison & Video

1 Answer

Sharp lcd tv. Grn lite flashing, reset by unplug, vol + ch - , plug in. Tv came back on, after few mins screen goes blk, have sound. turn off and on picture back for few minutes, goes blk, snd ok.


Set-up (Programming) procedure is too much to type in here, and is not practical and it will differ brand-to-brand remote controls. If you wish to get more; check the sites linked here. The site has set-up code list & set-up procedure to many popular brand remote controls. The site has general set-up codes to check with TVs and other devices are given, in the order of the 'device's brand name list' in alphabetical order. Set-up code list to many brand remote controls also is given. Pull up older posts. Search the sites by type in the brand name to your device in its search box at the top right part of the display window. It will help you to find the document easily.
http://electro-medical.blogspot.com/

Jan 07, 2017 | Sharp Televison & Video

1 Answer

MY SAMSUNG TV IS ONLY SHOWING A BLACK SCREEN WHEN IT POWERS ON THE MODEL NUBER IS UN60EH6002FXZA WHAT DO U THINK IS WRONG WITH IT


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board

Jan 07, 2017 | Samsung Televison & Video

1 Answer

Half of the screen turns a brownish color


The TCON board or the LCD panel is faulty can confirm by replacing the TCON board
If you wish to get some details; visit the site linked here. Pull up older posts. http://electro-medical.blogspot.com/

Jan 07, 2017 | Televison & Video

1 Answer

I was using my Samsung LCD 40" - LE40M86BD [R] when it just switched off and wouldn't come back on. What could it be? Thanks guys


Sounds like 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. . If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.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.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Jan 07, 2017 | Samsung Televison & Video

2 Answers

I have sound but no picture on my tv


This is a popular question. Most of the time you either need to make sure all connections are not loose or just need to turn off your tv and receiver and unplug. Wait for 1 minute then reboot.
I recommend this short video as it walks you through some diagnostics for other possible problems.
Repair TV With Sound But No Picture

Nov 24, 2015 | Luxor Televison & Video

1 Answer

50" LG Plasma Screen TV does not have any sound or activity on the screen.


input correct ? eg:HDMI 1 USE MANUAL TO GET INTO SETUP MODE.go through all settings.check the contrast and brightness buttons n the TV if any on back or top.

Apr 15, 2013 | Televison & Video

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