I have a Philips 28PW9308 and saw elsewhere a method using the remote (numbers followed by the i button) whereby you can get in to the service menu.
My interest in doing this was to see if hidden away in this menu there was an option to disable the auto-format picture mode as discussed elsewhere, but alas no. Although, seemingly older or lesser models than the PW9308 publish the option to disable auto format in their user menu, on this model it has been omitted completely, leaving you with the only auto-switching option being auto-format. All this seems to do is switch between side-stretched 4:3 or widescreen. But what if you want 4:3 to be shown in 4:3 - Philips obviously think people always want to fill the screen no matter what!

I think I'm beaten on that one.
On another matter, when browsing through the extensive hidden service menu (in which I carefully didn't change a thing), I noticed that in the "Service->Dual Screen" menu there is an option called "PIP/Dual Screen" (or something like that not having written it down). This is a Yes/No item with it being set to No.
The PW9308 is not advertised as having PIP although I think more expensive models do have it. Does this mean that this model though does have it but it is just disabled by the service menu software and it can be enabled by switching the setting to "Yes"? If so, how do you save the service menu options back (or cancel them for that matter) and what remote control key would be used to access this when it's enabled?
I'm seriously not wanting to mess anything up, but if it was possible to have this extra without affecting anything else, it would be good to know.