Pt730u Stopped Working After Turning The Unit Off And Back On Again.

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Response submitted July 17th, 2021 5:36 PM
The PT730U was being used as a PA amplifier. It had two 4 ohm 20W speakers from a guitar amp wired black lead to common and the red lead to the 4 ohm speaker input on the amp. I also had 2 small speakers from a home audio system, one was a 4 ohm woofer and the other was a 3 ohm set of two small regular speakers that went along with the woofer. The guitar speakers went directly to the 4 ohm input on the amp. separately, with no other electronics in the circuit. This arrangement was working well before I turned the amp. off.

I had two microphones plugged into the unit at the time it was working. One was a Behringer Ultravoice XM1800S plugged into the balanced input jack #2 and a cardioid condenser microphone using a 1/4" plug that had a homemade converter to a balanced mic. plug that I plugged into balanced input #3 on the amp. As I say, both mics. were working well before I turned the unit off.

In the process of examining the situation, I have power up to the amp.. and the power cord running into the amp. OK. I have enjoyed the amp's performance up this point and would appreciate any help you can give me to get it back up and running. I hope this information helps.

Thanks,

Ian Treece