Ok, look this just started this morning. When I power the Slim PS2, it powers off.
Troubleshooting; this is what happens
Lid Open & Game In: Power Stays On
Lid Open & Game Out: Power Stays On
Lid Closed & Game Out: Power Stays On
Lid Closed & Game In: Power Goes Off
This is a Slim V12, with a CC 1.0
Edit: Just tried with a copied game; that works, but real games/movies, powers it down..