No picture (white screen)...

tcon board fault. If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size

Check and replace its tuner. If you wish to get some details; visit the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/

I have 2 pro scans Comcast hd. On Comcast remote small button ( for me Its small circular button bottom right) HD ZOOM. (enter above it)

Check the video output voltage to CRT board. It might be absend.

Look through the ventilation slits at the back of the TV with the room lights out. If you do not see white light light bleeding through the back, you have a back light failure. It could be the inverter circuit which lights up the CCFL ( cold cathode fluorescent lamp ). You will need professional help to replace it and could cost you about 70 to 100 $ to fix.

Can't changes tv picture screen sizes,when the tv is off.She is cleaning the tv,when it is off wright?Yes.Than the tv programming u are watching stay small screen size the whole entire times even different seen or in commercials?Tv even in difference tv channels,screen sizes are small too?Sometimes tv changes screen sizes by itself to fit the tv programming it is playing to fit it prgramming format it displaying.Still have all small screen sizes all the tv channels.Tv must be on and playing.U have the tv original remote wright?Yes.Try looking on ur tv remote control look for a buttons said like Aspect Ratio,Picture Sizes,ZOOM or VIEWMODE buttons,by pushing one of these buttons on the remote should able to changes tv picture screen sizes.

Hi, Mary with Dish Network Customer Service here. It sounds like when you try to change channels with your remote, it is changing the channels on your TV and not your Satellite Receiver. In the top left corner of the Dish Network remote is an SAT button. When you try to change channels on the Satellite receiver this button should be lighting up. If the TV button lights up, it means the remote is working the TV. Press and release the "SAT" button after you have the picture back on the TV and it should work normally. I hope this resolves your remote issue!

check the power supply section.. probably the electronic component got problem.

it means that only one channel save from your tv. press automatic search to search more channel from cable signal. now you can change channel.

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