nowadays , RCA seems to mean "Really Crappy Apparatus" . Thomson has sullied the name !!
if less than 1 yr old , will be under part warranty . labor might only be 90 dys ?
havn't been an asc for rca since '04. so, not sure if it has changed ( so much has ) .
anyway , u should still have 2 yrs on the crt.
** **opening the cabinet WILL void the warranty ** **
may be just a loose connection or component failure in red drive/output.
possible corrupted eeprom data ( which i doubt)
improper settings CAN result in a dead set.
PM if u really want the service menu entry proceedure.
qrz