I don't think you get an error message with a wrong PIN code, the digits are just blanking to enter a code again. The PIN code you got is probably the factory one, but it has probably been changed. You have to call a dealer to get a mastercode to reset the PIN code, you will have to provide the S/N to him to do so.

Your new BSystem3 was probably setup to be used with a Beo4/navi.

Which one do you use?

MM

Try using the pin and GO. If nothing happens...try using the pin and PLAY. 

I can't seem to upload an image, but if it helps I see "accept" and a circle at the bottom of the screen rather than GO which

I would expect. Apologies for the memory my old unit broke down months ago and I don't remember the menu's exactly.

Any channce of getting hold on a Beo4 with navi key (= with the small knob in the middle)?

MM

No I don't think I can get a hold of a navi key Beo4. I don't know anyone else with B&O in this town and the nearest dealer is on the mainland. 

I'm looking through the manual trying to find the factory default routine now. I have found the instructions for setting up the beo4. 

So there's no way to reset a BS3 input configuration to a stock Beo4 without using a beo4 navi? 

I can’t give you any other advice as to try with the Beo4/navi - which does not mean that there is no other way.

I remember having had that problem some time ago - that was what helped.

MM