Hello, my Finlux 427020-D LED Passive 3D tv, popped after trying to turn it on first thing in the morning and completely stopped working. Is there anything I can do myself as cannot afford new.

Hello Scott Baer...

I posted your make & model... and it responded with "SPARES"
which means you have different input voltages...
(here = usa: "parts").

After you beg, borrow, buy a ESD wrist strap... and take lots of pictures of EXACTLY WHAT EVERYTHING looks like...

Take a look at the board with the most metal showing:
Main power board... would be an EXCELLENT first guess.
(main board would be your next guess)...

Calling it an iterative process sounds the best (guessing!!).

Write that number down... (and the other while you're there)!!

Then go onto eBay with your model number and see what conventional (cyber) wisdom has to say... (The input voltages may be different... but the principle functions all work the same).

If eBay is tooo frightening use shopjimmy.com...
technical support is available there as well...

There's an interesting young man who blogs under the name "tampatec"... While I vigorously disagree with his live testing

(circuit packs are just to cheap to risk safety)

https://www.bing.com/search?q=Finlux%20427020-D%20parts&qs=n&form=QBRE&pq=finlux%20427020-d%20parts&sc=0-21&sp=-1&sk=&cvid=7E1E9AD4826C41E18065501D0DF4EDFD