Question about Toshiba Regza 46RV535U 46 in. LCD HDTV

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I have the same problem with a Toshiba RGZA 46RV535U purchased 2/2009. My picture gets darker in the center 1/3rd of the screen intermittently. I have removed and reconnected all cable connections on the main assembly pc boards including the C board connections. I have not disassembled the display panel at this point. My question is concerning the LCD Backlighting. If the backlight tubes are placed vertical then it could be an inverter board problem. The area is too wide to be a single tube. That puts in somewhere in the area of inverter board and connections. If they are located horizontally I am back to square 1. A web search indicates that the tubes are available for purchase but does not provide the specs. This would allow me to determine tube placement. Does any one know if the tubes are vertical or horizontal?

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The tubes are horizontal but require disassembling the cover and the inverter
board completelyfrom the chassis. There were 17 of these flourescent tubes stretching the ful length horizontally. They are so fragile.

Posted on Aug 24, 2012

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SOURCE: Westinghouse LCD tv LTV-32W4 has great sound but no picture.

Your television actually has a backlight bulb which can be replaced at our parts request email and phone number. Email address: Parts@wde.com. (866) 839-5888

Posted on Jul 29, 2009

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SOURCE: How do I determine which backlight inverter is

Most of the time is the Master one.The A board,But sometime the Slave board B.Take chances,but the A is the best chances,because is the Master board.

Posted on Feb 08, 2010

Testimonial: "Then I will go for the A thanks."

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