Definitive Technology Subwoofer - Power Supply

[techguy111]

Good Evening I am looking for some help with my definitive technology subwoofer. Would anyone happen to have schmatics for the power supply board in this or help me further diagnose. I am getting some voltage at the two large capacitors around 169.13v dc, however not getting voltages much past them. Supercube 2000

Any thoughts?

 

[TLS Guy]

Good Evening I am looking for some help with my definitive technology subwoofer. Would anyone happen to have schmatics for the power supply board in this or help me further diagnose. I am getting some voltage at the two large capacitors around 169.13v dc, however not getting voltages much past them. Supercube 2000

Any thoughts?

Yes, does it have 0912HB as part of its serial number? Any of these units with that sequence of numbers and letters had a serious fault and are a serious shock hazard. All those could not be fixed and need to be junked. Def Tech had to replace them and NOT repair them.

As usual there is no service manual or circuit available. Like a lot of firms they are under the delusion that there will be people lined up to copy their junk! And these units fit that definition.

Lastly switching power supplies are just horrid to diagnose and fix, and most just give up. That unit is not worth your trouble.