holgerczukayfan5000
New member
Hi there,
Going down a rabbithole trying to integrate an IcePower 400A2 class D module in an old SWR SM-400 amp. Bought the amp with a completely blown power amp so it seemed more efficient to get a module.
PSU:
the transformer brings the +/-55v and +/-15v
The module asks for max +/-69v / min +/-45v and +/-12 (VDD/VSS) and Vdrive which sits +15 above the negative power rail.
All of the voltages except mains are regulated by 78xx/7912
I don’t get any sound and kind of afraid I already blew the module disturbing it’s finicky nature by my some stupid testing.
Probing on the +12 rail I get -2v drops in 0,4s intervals, the neg rail correlates. All the other voltages seem stable. The DCerror pulls low, when VD/VS is applied it starts flashing
Any leads? Not sure how to go on
Thanks a lot for your time!
I’ll attach the diy preregulator (which is followed by a 7815) and other relevant documents
Going down a rabbithole trying to integrate an IcePower 400A2 class D module in an old SWR SM-400 amp. Bought the amp with a completely blown power amp so it seemed more efficient to get a module.
PSU:
the transformer brings the +/-55v and +/-15v
The module asks for max +/-69v / min +/-45v and +/-12 (VDD/VSS) and Vdrive which sits +15 above the negative power rail.
All of the voltages except mains are regulated by 78xx/7912
I don’t get any sound and kind of afraid I already blew the module disturbing it’s finicky nature by my some stupid testing.
Probing on the +12 rail I get -2v drops in 0,4s intervals, the neg rail correlates. All the other voltages seem stable. The DCerror pulls low, when VD/VS is applied it starts flashing
Any leads? Not sure how to go on
Thanks a lot for your time!
I’ll attach the diy preregulator (which is followed by a 7815) and other relevant documents
