Revox A77 Loudspeaker Board simulation

[geoffreyC]

I am trying to get a Multisim simulation to work for the Quasi Class AB Loudspeaker Amplifier board for a REVOX A77 tape deck.  The REVOX part number is 1.077.850 and the board schematic is included in the service manual.  Can someone please look at the simulation circuit and say why its not working.  I have probed and 'scoped everywhere and the problem seems to be that the input BC177 is not being correctly biased so never turns on.  I have checked component values with pictures of the board and they seem to be correct. I have also used pictures of the printed circuit part of the board to check the schematic and this also seems to be correct.  I enclose the simulation and a copy of the published schematic. For the simulation I have replaced the BD121s with 2N5039s and the BA127 diodes with IN4151s as neither of these are in the parts database.

[geoffreyC]

I have found the answer to my problem with more playing arround with Multisim.  I enclose the version which works which only differs in that I have wiggled every component around to demonstrate that its ends are connected.  The problem is that Multisim does not always connect items in circuit unless they are wiggled !  

[marcel.steiner]

Thank you for your simulation. May I ask you what was your purpose to simulate the A77 loudspeaker board?

Regards Marcel