So, I finally got round to doing a factory reset to sort out the storage issues on the A80J 77", which were preventing me from freeing up space on internal storage even if I deleted apps/cache/memory. It somehow got stuck saying the available space was full and I couldn't even update the Apps I did have. I also couldn't move stuff to the Pen Drive I bought for extended storage. Anyway, bit the bullet and spent 2hrs doing a fresh install and all is now good. All apps are directly installed onto the extended storage pen, after changing the Dev settings to allow for this and I can update Apps again!
All good, except now I've noticed the last few times I've turned the TV on it's done a full restart (or has fully shut down when I last turned it off at least) when I wanted it on standby.
In addition to this, when it does a full reset, all of the Apps which I've moved into the quick-launch bar get reset, so I have to go to the Apps screen to open them. Think this is only for the apps on the external drive. They are fine when the TV just goes to standby.
Any ideas as to why this is happening?