Red light underneath of caution symbol is blinking and unit is not turning on.

A few things spring to mind.

Failed Defrost timer.
Failed Evaporator fan.
Blocked Defrost drain.

Calling for service is your best bet.

Yes, see previous answer.

The blinks are a code. If 3 red blinks, could be power board.

When the battery is almost empty (when there are only 5 or fewer shaving minutes left), the battery symbol lights up red.

Make sure that the battery does not have a memory effect. What I suggest is taking the shaving head unit off and running the shaver till empty, then recharging. Check if the red light is still flashing.

There's also a head indicator at the bottom of some shavers.

To remind you to replace the shaving unit, the shaving unit symbol flashes (all types) and you hear a beep when you switch off the shaver (RQ1090 only). This happens at the end of 7 successive shaves to remind you to replace the shaving unit.

Without knowing what model you have it's difficult to diagnose further.

video is not coming but audio is coming

slow blinking light means the unit is in DRY MODE.. flast blinking light means some sort of arcing or bad power supply..
if in dry mode let the unit run for an hour and it will stop blinking ..

One of the things you could [if you havent already tried it] is turn off the printer and disconnect the AC Power cable. the press and hold down the power button for, about 30 seconds then release it. After that reconnect the power cord and turn on the printer. this process should have reset it

Shaving head check indication After two years of use the red shaving unit symbol î will flash for 30 seconds during 7 shaves to indicate that you should check the condition of the shaving heads. This indication is based on an average shaving time of 3 minutes per shave. When the shaving head symbol flashes, all other symbols and lights are out. When the shaver is switched off, the shaving unit symbol disappears. When the red shaving unit symbol starts flashing, you should check the shaving heads for possible damage. If the shaving heads are damaged in any way, they must be replaced in order to obtain optimal shaving results

youre in trouble check the other posts

I hve worked on a number of these units , your description is typical of a shorted blue picture tube. The protection circuits in the tv detect that there is a problem thus shutting the unit down to prevent further damage. Sony had a bad run of picture tubes in this series. The replacement cost of the tube is about $250 plus labor. My estimate would be for the repair about $400-500 depending on where you live and how honest your local technican is. I will caution you however, that you could replace this tube and the red or green could go. These would not be covered by the technicians warranty. When these sets are working, they have a superb picture and it is easy to get lured into fixing them. Scrivitron