My screen is extremely dark

Hi there,

I have a Hisense H75A6600UK television. It was working perfectly fine last night before going to bed, but this morning when the screen is extremely dark, I can barely make out a picture. The sound works fine and I can change channels etc. When I initially turn on the TV from a hard close, the Hisense logo pops up brightly for a split second then goes super dark again.

I tried adjusting the picture settings and also performed a factoey reset, to no avail. I saw some advice that recommended powering down, I tried this a few times and it made no difference.

I Have opened it up to take a look at circuit boards, does anything look amiss here?