Need help with Bose Wave Radio AWR1-1W Series 2

I have a Bose Wave Radio AWR1-1W Series 2 - PCB 179551 - Symptoms are: Unit will not power on, and when you unplug the radio.. you hear a pop from the speakers.. I found these symptoms listed in another post on on a message board... and it was attributed to the 5vdc regulator... This sounds pretty much to be correct here too... as I cannot find any 5vdc on the board... the 12vdc regulator is good and I do have good clean 12vdc... I originally thought it was a the well documented capacitor issue, and I replaced all the Caps... along with the AC bridge rectifier, Audio Out Amp and the 12 vdc rectifier... so.. the darn thing is almost new... now... not much left on the board, but surface mount... I have looked for, any damaged parts, signs of water damage.... etc... and, nothing obvious... I am pretty much at a stalemate without a schematic or a parts listing... Also... the surface mount transistors are not labeled or numbered... If anyone can help... I would appreciate it!!!!