Question about Toshiba 53AX61 53" Rear Projection Television

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Sound but no picture

I have sound but no picture...the RGB tubes work but no picture. Also I noticed the screen getting darker before the picture went out.

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I worked as an electronic tech for Toshiba for 17 years. You could have several issues, but most likely you have a problem that will need to be troubleshot down to the component level. A really good idea is to "shock-test" your tv - meaning to very gently bump or tap on the back of your tv or if you electronically oriented to take the back off the tv and use a "non-conductive" probe to tap on different parts of the circuit board. If the picture comes back when doing this then you have a simple solder joint that needs to have more solder applied.

Posted on Jan 07, 2009

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Hell k_sopata
If the display isn't working and according to the conditions you described yes it is the picture tube. You could contact Samsung and get a replacement for it.

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Our 1991 RCA P52150CP rear projection TV has gradually been getting bright cloudy blue, slight haze around letters & shapes-(especially blue channel change headings) when first turned on and then it...


Hi

First check whether all the cables from your dishnetwork are fine and connected firmly.If yes then you'll need to pull off the front of the tv, behind the speaker grill there would be a panel. Remove the panel and check for a black box hanging over there. It has 6 controls on it, 3 are marked as focus and 3 as screen. You'll need to adjust the screen. If you turn these too high you can damage a tube. so we are doing real small adjustments. Turn the color off on the tv and adjust the red, blue & green controls up till you get a fine picture. Also adjust the focus until you get a clear picture.

And, if it doesn't resolve your issue then it is an intermittant blue picture tube, a bad blue driver transistor on the CRT board, a bad connection on the blue crt board, or a problem in the RGB coming from the video jungle IC. A set this age, most likely will run you about 300 to 500 bucks to have this problem fixed, unless it is the picture tube.

Please do accept this solution and revert for further assistance.

Thanks
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1 Answer

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1 Answer

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