Hi,
I reported the original problem early this year whereby the 860S will lock up when setting a Series timer event. It then powers off after a minute or so, then powers up with the Welcome sign for 10-20 secs, then powers off. Every 30secs thereafter it goes through the same 'Welcome' power on/off sequence, making the product completely unusable. Pressing the HDD or power buttons during the power up does not reset the machine.
The only way it got fixed was to take it to a service dealer where they did a factory reset (unfortunately, the engineer wouldn't say how this is done) so every time it happens, I have to take it back.
When I got it back, I discovered that the fault occurs when you try to set more than 1 Series timer event. On the 2nd event programme, it locks up, but reboots into L1 input mode, and if you change the programme channels on the remote quickly enough it prevents the power off, so you do get control back on the machine and can remove the unresolved timer events.
However, if you then try to programme a 3rd Series event, it will fully crash and there is no way to get control back other than take it back to the service dealer for another factory reset.
Subsequently, I have learned to live without more than 1 Series event (Ch4 Hollyoaks as it is the only thing I am addicted too

).
Hopefully, the OAD update may fix the Series timer problems, but I don't know if I can be bothered to test it...