Hi Dani, I had some similar problem but with a different model, I am
not an expert like yourself so I don't want to make any wrong
suggestion. I am just going to refer you to the place where I found my
solution. Its a tech support site with live chat support that you can
use for free. They have large range of products I am sure you will
find some answers for what you are looking for.

Here is the page for your TV:

http://www.fixya.com/support/p210402-rca_32f530t_32_tv

I recommend using the live chat!

Good luck

Jogy