Model: KD-55 A1

Android 8.0 (Firmware 6.6555)

Issue: Constant retstarting

So I finally got my automatic update to Android 8.0 over a week ago now. Since then my TV constantly restarts - luckily, not whilst watching it, but if it I turn it off for any length of time then 90% of the time, when I turn it back on later I get the:

android -> Sony -> android loading animation

Before I can do anything. Pretty frustrating.

I say 90% of the time, because I just turned it on to get the serial number and it had uptime of 19 hours! I turned it off and I bet it will be back to its old tricks when I come to watch it later.

I have done a "Factory Data Reset" through Android twice as per guidance. This hasn't helped.

Any ideas?

Michael