If you do not have the remote control for your Sanyo DP50747 TV, you can try using the buttons on the TV itself to set it up. Here are the steps to follow:
Locate the power button on the TV. This is usually a round button with the power symbol (a circle with a line through it) or a triangle with a line through it. Press the power button to turn on the TV.
Locate the input button on the TV. This is usually a square button with the input symbol (a rectangle with an arrow pointing into it) or a button labeled "Input" or "Source". Press the input button to cycle through the available input options (e.g. HDMI, AV, etc.).
Once you have selected the appropriate input, you should see the setup screen for your TV. Use the arrow buttons on the TV to navigate through the menus and select the options you want to change (e.g. language, time zone, etc.).
To save your changes, look for a button labeled "Menu" or "Options" on the TV and press it. This will bring up the main menu, where you can select the "Save" or "OK" option to save your changes.
Note: If you are unable to navigate through the menus using the buttons on the TV, you may need to use a universal remote control or purchase a replacement remote for your TV.
Try unhooking the cable going to the selector buttons on the TV and see if it work ok with the remote, if it does the button cluster needs replacing, if it acts the same replace the main
Try unplugging your TV for about 10 minutes and also hold the power button on the TV for about one minute and then plug your TV back in again and turn it on to see if the white screen is still showing up again. It could be the capacitors inside of the TV have gone bad or the powerboard is not working.Check the cables and the connections to your TV to make sure they are fully connected. Or the TV connections are bad and should be replaced.
Hi,
it's sounds like a group of the screens leds have overheated and/or burned out. If you just got the tv, this would be strange. However if you've owned it for years, then this might happen. Please attempt one power cycle and then flip through channels to see if the issue remains.
If so, you might need to set a tv diagnostic-appointment with a company like geeksquad/ home depot after attempting a factory reset on the tv.
Thank you.
Question edited for full 'make model (what it is)'.
Question moved to Sanyo.
Could be the power supply, it could be the main board. My advice regarding home television repair, unless our Television Expert Larry comes along.
https://www.fixya.com/support/r29790007-repairing_own_television
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Is it attached to the aerial/cable socket.?
If it is, then the main control board has probably failed.?
Changing it out is a fiddly but achievable job, but it's probably only worth it if you can pickup a used replacement part from eBay or similar.?
Otherwise a brand new replacement board may be up to $150.?
Hi,
Please adjust your tv's contrast and brightness to try an overcome the issue. If there are accessories linked to your tv, please temporarily remove those accessories and restart your tv to see if the issue goes away.
If all else fails, a factory reset would be the next option.
Thank you.