While you wait for answers, we may have found some information which could help you.
Click here for Tape Out Vcrhow can i fix my tv symphonic lcd-b20a6?
Symphonic model WF27F4 TV is it worth repairing?
how can I fix my Symphonic 32" lcd tv?
Symphonic w27f4 black screen?
HOW CAN I FIX MY SYMPHONIC LCD B20A6 TV?
Hissing sound after power surge?