One, whenever I turn the TV off via the supplied remote, it turns off, but when I go to turn the TV on at a future time, via either the remote or the power button itself on the TV, the front indicator light turns from red to blue, but no picture ever appears, just remains black. I have had the TV for just over a year with no problems. (the power 13 volts ok back light volt each 115 volts) Likes ( 0 ) Dislikes ( 0 ) Reply We have tried unplugging and plugging back in which did not help. 1. Our tv has power to it but will not turn on. Now the TV just won't show a picture. The HD box responds to the remote control. Sir I have 55uh7700-ub lg tv,the tv power supply light on but no picture black screen. Technician's Assistant: Have you made sure all cables connected to your TV are securely attached to both the TV and the outlet? Technician's Assistant: Is your Hisense TV connected to a surge protector or power strip? It’s a Hisense 55” inch smart tv and it’s 4 years old. The red light in the corner is lit but when we try using the remote or the power switch on the unit itself, we get nothing. Our Hisense TV will not come on - no picture & no sound. Yes also checked with cable company. My Hisensense 5020DUS blacked out botht sound and picture without warning. I turn it on the power/standby flashes green then red and no picture. Hisense 50H5C LED tv has standby light, won't turn on I opened up and tested the standby voltage at connector but there is no printed voltage. The red power light flashes 6 times then gos - Answered by a verified TV Technician. No picture at all no just the tv no picture no sound just a blinking light. Tv power light will not go off, no picture. NOTE: Some troubleshooting steps may be different from your (Samsung, SONY, LG, Hisense, TCL, VIZIO) TV or remote control but generally will work the same to fix the problem. the red indicator light blinks 6 times and the blinking light disappears and the screen remains dark with no sound. When attempting to power the unit on by either the remote or power button. FIX TV SCREEN THAT RANDOMLY GOES BLACK. If the user uses the Hisense smart tv for tunning the TV channels. Do you have the same problem on all sources/inputs? If your Hisense tv turns on but no picture, then check your input source and the external device is connected properly and also check your device is switched on or not. Technician's Assistant: Does the TV menu work? But, the user switched off the TV and switched on again, then it will show the last viewed channel on your tv. Technician's Assistant: Are there any HDMI cables or A/V jacks (red, yellow, and white cables) plugged into your TV? 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