I've heard bangs before, and usually a fault had occured! You seem to imply that the bangs are heard but the unit runs fine!! Confirm.
Have you applied any recent firmware updates?
Is the main board still inside the amp or have you removed the board from the chassis?
Bang : Do you hear this through the speakers or 'mechanically', audibly coming from the amp?
There seems to be two versions of the main board : the original version has the output heatsinks resting on pads like skids. The heatsinks are held down via screws to the chassis. If the main board is taken out of the chassis, you wouldn't have enough pressure to keep the heatsink's pressure on the power pads (under the heatsink).
The newer version of the main board has some pins protruding from the heatsinks making a proper contact with the power rails.
If you were to test the amp with just the main board, I wouldn't power the amp to speakers outside the chassis; Just make sure the amp is operating normally and install it back into the chassis before power tests.
Verify the filter caps (both hi and lo voltages) for domed tops! Make sure it is the cap that is domed and not the plastic top!
I hope this helps.
joustMember Since 02 Dec 2004
Offline Last Active Jul 11 2014 03:11 PM
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