I have two working RCA 55" LED TVs.
A is a LED55C55R120Q
Serial No. 3527-LE55C55-B100491
Jan 2014 Made in China
Panel No. LSC550HJ03-12v...........It is a Samsung panel
RCA 55120RE01M3393LNA5-B1 Main Board SoC is MSD3393LUM
B is a LED55C55R120Q
Serial No. 2505-LE55C55-A105154
March 2013 Made in China
Panel No. T550HVN02.1-QYE............It is a AUO panel
RCA 55120RE010C878LNA0-A1 Main Board SoC is R8A66983BG
More is over here
A is a LED55C55R120Q
Serial No. 3527-LE55C55-B100491
Jan 2014 Made in China
Panel No. LSC550HJ03-12v...........It is a Samsung panel
RCA 55120RE01M3393LNA5-B1 Main Board SoC is MSD3393LUM
B is a LED55C55R120Q
Serial No. 2505-LE55C55-A105154
March 2013 Made in China
Panel No. T550HVN02.1-QYE............It is a AUO panel
RCA 55120RE010C878LNA0-A1 Main Board SoC is R8A66983BG
More is over here