Hi i have a hisense 58 inch smart tv the power button just flashes red we had changed the back lights then the tv would work for 2 days and go out again what is the problem that it keeps going off

A blinking red light on the power button of a Hisense 55 inch model 50R6E3 TV could indicate a problem with the TV's power supply. It could be caused by a malfunctioning component, such as a blown fuse or failed capacitor, or it could be an indication that the TV is overheating. In some cases, a blinking red light can also indicate that the TV's firmware is not up to date and needs to be updated

https://candid.technology/hisense-tv-red-light-blinks-2-times/

1. Why hisense TV red flashing power light has sound but no picture
There could be a few reasons why your Hisense TV has a red flashing power light but no picture. It could be an issue with the TV itself, the power supply, or the input signal. Let's take a look at each of these possibilities in turn.

2. How to fix hisense TV red flashing power light has sound but no picture

If your Hisense TV has a red flashing power light but no picture, there are a few things you can try to fix the problem. First, check to make sure that the power supply is plugged in and that the TV is receiving power.

Next, check the input signal to make sure that it is compatible with the TV. Finally, if the TV itself appears to be the problem, you can try resetting it.

3. What to do if hisense TV red flashing power light has sound but no picture

If your Hisense TV has a red flashing power light but no picture, there are a few things you can try to fix the problem. First, check to make sure that the power supply is plugged in and that the TV is receiving power.

Next, check the input signal to make sure that it is compatible with the TV. Finally, if the TV itself appears to be the problem, you can try resetting it.

Hi Walter, your LED backlights are bad and need replacing, common issue with most Hisense brand sets

Unplug the TV's power cord and hold the power button directly on the tv ,keep holding it for 20 secs or so then let the tv sit unplugged for a couple of minutes before you try it again.

Dont rush into changing boards. In many of those sets, the issue is back light LED strips that fail and the power board shuts down.

Very likely slow internet connection

I would replace the remote first, if that doesn't work the TV is at fault, and this can be very expensive.

Hi, Mister,

Two things, first check if the power supply of the tv is in good order, second, has to be your inverter, this is the circuit of the backlight. Thank,s good Luck.

Serge.