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Check the remote control for its infrared emission. Check it with fresh batteries. Check it by pressing all the keys. You can detect the presence of infra-red emission from the remote control, using a cell-phone camera. If you wish to get more details about how to check a remote control, please visit this site. One among the posts has details about it. In some cases, the remote control might need to clean.
Search the site by type in this key phrase "how to test a remote control "in the "search box at the top right of the display window of the Homepage" to get the related post quickly. [open and clean] [open and clean]/

Upstar Televison... | Answered on Jul 14, 2018

shine a lamp onto the screen and if you see some movement then the backlight has gone.

Upstar Televison... | Answered on Apr 23, 2018

Have you got backligths checked and working?

Upstar Televison... | Answered on Aug 29, 2017

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