Hisense TV H32V77C. About 3 years old. Sound works fine but picture is cutting in and out, showing green and red lines before and during doing so. Sometimes the picture won't work at all, but sound still works. Have checked all cables and changed out HDMI cable, it is definitely the TV itself. Started about 3 days ago. Unplugged and left off for 24 hours when it first started. Turned back on, picture worked for about 5 minutes then cut out again. Haven't tried since. Is there anything I can do to fix this?

Televison & Video