mancho posted an answer for this Proscan PS36700 36" TV:
"Go to your TV menu and seek for "Closed Caption" menu. Select mode off (no mode 1, 2 etc)...."
mancho posted an answer for this RCA 20F424T 20" TV:
"Greetings. I had the same problem with my 29" RCA, and it was easy to repair. I opened the..."