Solved! LG 50” tv has sound but no picture

Jan 6, 2019
Black screen with standby red light flashing and sound. We did a hard start and got the tv to work for two days and then same black screen, red flashing standby light and sound. Any suggestions? Tv is only 3 yrs old
All 3 of mine did this , also all LG's ...40 inch , 43 inch, 49 inch. All were recycled barely over a year old. Estimates to repair were more than I paid for the TV's. I own all Vizio's now.