There are a couple of different remote control technologies. Point to point Radio frequency, networked radio frequency and IrDA...or infrared diode.
Your Sanyo GXBM is an IrDA based remote. The diode is a lot like a lamp, only the signal it sends would be easier sensed by people as a change in temperature if it were strong enough.
Over time, the IrDA LED can degrade and will eventually fail. The transmitter in the remote can also fall out of spec over time, and the remote receiver in the TV lose its tune to the specific frequency that the remote broadcasts, making it harder to 'hear' he remote commands.
Other common issues for losing the range you had when it was new is clouding or scratching of either of the protective lenses on the TV and the remote.
i have included a direct replacement part for your GXBM
SANYO GXBC TV Remote Control
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.
0271,0295,0229. Try these codes. If you wish to get more details; check the sites linked here. It has set-up code list & set-up procedure to many popular brand remote controls. Common 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. Pull up older posts. Surf the site with patience. Surf the sites by type in the brand name to your set, in its search box.
http://electronicshelponline.blogspot.com/http://remotesearch.blogspot.com/http://electrohelponline.blogspot.com/
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.
I have had a similar problem with my tv, it has something to do with the power supply.Try unplugging your tv from the AC outlet. While unplugged from the power supply hold down the - volume control and then plug the tv back in while holding down the - volume control. It should bring up the service screen. If the screen turns on and is blank then it may need to be brought in for repairs.
If the screen does turn on, either blank or with the service menu, turn off the tv and unplug it from the power supply again. With it still unplugged hold down the power button on the tv and then replug in the tv. continue to hold down the power button until the tv displays a video signal on screen.
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.?
There are a couple of different remote control technologies. Point to point Radio frequency, networked radio frequency and IrDA...or infrared diode.
Your Sanyo GXBM is an IrDA based remote. The diode is a lot like a lamp, only the signal it sends would be easier sensed by people as a change in temperature if it were strong enough.
Over time, the IrDA LED can degrade and will eventually fail. The transmitter in the remote can also fall out of spec over time, and the remote receiver in the TV lose its tune to the specific frequency that the remote broadcasts, making it harder to 'hear' he remote commands.
Other common issues for losing the range you had when it was new is clouding or scratching of either of the protective lenses on the TV and the remote.
i have included a direct replacement part for your GXBM
SANYO GXBC TV Remote Control
