My beko tv is having difficulties in bringing on screen picture.. it initially appears as shades of blue someimes light tartan effect as it is firing up a red line appears down right hand side.. as if it takes time to heat up.. sound and channel change can be done whilst this is all happening can u help please

Buy an other TV.

Suspect main board that processes all signal in and to the screen.

If not tried do see if same problem when rear inputs for audio/video are used.

Have you tried a better HDMI cable?

unplug your TV look on the back for a three controls marked red / blue / green "screen" turn / tap on them; watch the screen when you find the "dirty" control clean it with "TV tuner cleaner spray"

The back light is beginning to fail, thats why it goes shaded but you can still the picture on one side, do a google search for back lights for your make and model, there a few how to's to help you with changing the back light.

Nothing at all? Does the screen seem to go from dark black to a lighter shade of black?

If the screen appears to stay on the darker shade of black then it is broken, and needs to be sent for repair. ( ie the screen isnt powering on when the tv is and there is nothing you can do without opening it.

You might try unplugging all cables and leaving it off with no power for a day This is in effect performing a factory reset.

and this may sound stupid and patronizing but is the TV being taken out of standby mode and actually switched on?

Nick

take away if there was any speaker near the tv Unit. you need to demagnetize the screen using a magnet or demagnetizer.

did you ever sort this as ive got the same problem

Hello!

Please check the Troubleshooting part of the manual.
https://manualsbrain.com/en/manuals/1442594/?page=36

I would suggest getting another optical block from the repair man. Apparently even some replacement blocks have had issues...