Mackie Tapco Th15a Thump Active Loudspeaker "reversing polarity" Questions

On a Mackie Thump Th15a loudspeaker, diodes D106 and D107, which diode has reverse polarity? Contact Mackie Customer Service for the best answer. Mackie Tech Support Both diodes have the same polarity

no powerfrom the outlet source Hello . the other day i was playing my keyboard and all of a sudden i lost the power to the unit . The powersupply was very warm . I try a new power supply and that did ...

I have a Casio CDP 100 Digital piano. I bought the Yamanha FC4 sustain pedal. It works in reverse. I saw a post that said to make sure the pedal is plugged in before powering on the instrument and not

reversing the polarity. I had one of my synths act up really wierd and scramble the display, etc, until I found I was using a cheap extension cord and had the polarity reversed... the electronics didn

When I plug the damper pedal into my Roland ep 77 the damper comes on and stays on no matter if the pedal is pressed or not pressed. Using an M Gear SP2 pedal with dual polarity. Problem is the same ...

casio wk 3500 does not turn on I recently acquired the Radio Shack version of the Casio WK-3500 (1800MD) and it does not turn on. Tried different AC adapters with same rating, amperage, and polarity -

my H2 dose not turn on. It think the problem is in the Power supply but I need the schematics check the polarity is not reversed

I have a bad hum in my digetech live 4 When I plug the vocalist in there is a bad hum you may have a bad cord. try others. all so try reversing the polarity on the back of the amp. DFD

dead nothing on display but power supply lead checks out okay 11.5 volts in nothing happens no power up or display PSRE 403 yamaha If the power supply is NOT the original one, it may be reversed ...

...polarity switch on the FC7 the quick and dirty way is to cut the cable and swap the wires around. Reversing the two wires inside the cable will NOT reverse your problem. Believe me: I tried it with a ...