How to test my Amiga, and did I get Amiga 500 or 500 PLUS?

[mongo]

It's a 500 with a revision 8A motherboard. A 500+ would have 1 Meg of ram and the clock chip and battery.

[mongo]

Thanks, I dont care about quality at the moment, I really have no room in my room to put a CRT like thingy so using my PC LCD is the only option.
 
In case of TV tuner, will any kind of TV tuner do the job? I mean will a cheapo 20$ usb stick TV tuner (with antena in port) be OK? Or I should go for a expensive good quality BOX like ones?

If you're not concerned about the quality, a cheap USB one will work fine.