Sony KDL46HX800 Video out no sound

Video out audio ok

I have a Sony KDL 46HX800 the audio is ok but no video.

Thanks for taking interest in helping solve my issue.

I've tried all kinds of stuff. Like all the inputs local tv antena they all have the same result audio works fine but no video. The picture is not completely black it's kind of dark almost black purple.

When I switch inputs it does not changes to black as it suppose to. The is backlights as you can see in images.

I opened the tv vacuumed all the boards and tv itself. I didn't noticed any bad components on the boards or tv itself.

I get normal green light when on and red when off. No codes or anything in particular..

I found mainboard and tcon cards for 40HX800 Sony Tv in ebay i know it is not same TV but when comparing it is perfectly the same boards, the seller will sell them for 150 euro. Do you think they will work (compatible)? do i need to buy only one of them? i can do some softing steps if that will require.

https://www.ebay.com/itm/Sony-KDL-40HX80...

https://www.ebay.com/itm/T-CON-SONY-KDL4...

Thank you!