samsung UA32F5000AM died :(

She's been on and off working for two weeks now, and finally kicked the bucket last night. Power still runs through her, but it's either shorting out somewhere or not getting to the right components. The light pulsates, and when you push the nub around the light will flicker. the screen wont turn on despite having no previous issues.
Pulled her apart to see if there was anything immediately noticeable, and other than the fact she's minorly dusty because she hasn't been opened since she was manufactured in 2014, and traces of rust in the power board section, there's no damage or visibly wrong parts.

So I think I'll have to buy a voltage detector, find my mums' welding tools, and get to work.
I really really really don't want to get a new TV, I've had this one for literally most of my life. I was 5 when I got her. If I can't fix whatevers wrong with her, and my mum can't either, I'll scrap her for parts and put the screen towards building my own "cyberdeck" as it still works.

There's little information online that I've found regarding this specific model. A user manual and some parts on Ebay is quite literally it. I did find a video of the UA32J4100AR that had the same issues as my UA32F5000AM, so honestly I'm basing my solutions off of that. But like, if you have any advice that'd be totally rad because I'm kinda a noob at this stuff. I've only repaired my phones before.