Chosen Solution
My LG CX/C1 (unsure of model) is plugged into an Uninterrupted Power Supply, it works fine while the UPS is plugged into power, but after input is cut, and battery power is used, the TV seems to reboot after 5 seconds of battery power. It turns on, picture appears for a split second, then turns off, and it keeps going like that until power to UPS is restored. The current UPS I have has a capacity of 3000 VA, and supports Buck&Boost AVR.
@nabeelkamal sounds like your TV is power cycling do to a variation in voltage from your UPS. Most UPS should be capable of correcting minor power fluctuations (under-voltages and over voltages) some are not and it will depend on what voltages tolerances you have. TV’s are a little bit more sensitive and will do exactly what you describe. You could try to build some filter capacitors and see if you can get to stop the variants from your UPS. Also measure the output voltages consistently with a good multimeter and see what voltages your UPS shows you.
