My 50 inch rca scenium made pop sound now i have sound but no picture whats wrong with it

you should take it to a tv repair shop to look it over, they charge $50 and they will tell you want the problem is.

Sounds like your bulb poped, They are easy to change, there should be an access panel on the back, here is a link to the bulb for your model.

http://www.allprojectorlamps.com/RCA-ScEnIUM-HDLP50W151-COMPLETE-LAMP-MODULE--HYBRID-BRAND_p_38779.html

Your lamp blew. Replace it.

TRY THE BLACK LEVEL SETTING AND CONTRAST SETTING

my first question is have you checked the bulb. the loud pop sound like the bulb blew and the rattling sounds like the lamos trying to fire. remove the bulb cover and unscrew the bulb

bad color wheel

if you have some thin lines on the top of the picture probably you have a problem on the power supply for the convergence

No, I never found out what was wrong with it.

The color wheel isn't spinning.