ASW750 malfunctioning; need schematics

[Mark_89]

Hello,

I am the owner of a pre-owned 5.2 set consisting only of B&W 700 series speakers colored in pretty rosenut; amongst which 2 ASW750s. Now, sadly, one of my ASW750s has died. When I was using it recently it was playing at lower volumes but now when i turn it on theres no sound at all. However, the unit still looks like its turning on normally (relays clicking and the green light coming on).
Now my father is a technician who's also helped fix my Rotel 1095 before. For that amplifier, however, a service manual with schematics was available; but sadly not so for the ASW750. I really need these schematics in order to fix the sub; does anyone know where I could get these? Or is anyone familiar with this particular problem?
The amp in the ASW750 is the same as the one in the ASW800, ASW825, ASW850, ASW855 and I believe also the ASW CDM. So the print schematics for any of these subs will do.

[Patrick Butler]

Hi Mark_89,

You can find what you are looking for here.

Regards,

Patrick
B&W Group North America

Hello,

I am the owner of a pre-owned 5.2 set consisting only of B&W 700 series speakers colored in pretty rosenut; amongst which 2 ASW750s. Now, sadly, one of my ASW750s has died. When I was using it recently it was playing at lower volumes but now when i turn it on theres no sound at all. However, the unit still looks like its turning on normally (relays clicking and the green light coming on).
Now my father is a technician who's also helped fix my Rotel 1095 before. For that amplifier, however, a service manual with schematics was available; but sadly not so for the ASW750. I really need these schematics in order to fix the sub; does anyone know where I could get these? Or is anyone familiar with this particular problem?
The amp in the ASW750 is the same as the one in the ASW800, ASW825, ASW850, ASW855 and I believe also the ASW CDM. So the print schematics for any of these subs will do.

[Mark_89]

Hello Patrick,

that site is always my first go to in these situations but sadly the service manuals for the subs I mentioned contain only the physical components of the sub; not the print schematics of the subwoofer amplifier. The only file I've found which contained print schematics was the 800ASW (not to be confused with the ASW800), which is an older sub with a different amp (seems to be class AB).
If you were to come by these schematics by another means I would be most grateful.

[Brutalix]

Hi Mark did you ever get the schematics?

If not, and you just have the ASW 750 lying around, or are bying a new ASW800 board. Then I am interested in one of the circuit boards on your old one. I have a faulty "powerboard", have isolated it to one board. (Have 2 ASW750's) Don't know if it's the same fault you have, but I am willing to buy your old, even at the risk of have 2 boards with the same fault.

Kind regards.

Brut.