Amp Shutting Down, need help

To be very, very clear I will detail my power up process which is the same with and without the extension cord.

1. Prior to doing anything I check that the rear breaker On/Off switch is set to the off position and the front Standby/Active switch is set to the Standby position.

2. I then push the rear breaker On/Off switch to the On position.

3. I generally wait a little (I have varied the waiting time up to an hour) then I push the front Standby/Active button from Standby to Active.

4. I hear a lot of relay type clicking noises and the approx 20 seconds later if I do not use the extension cord the final click inside the amp trips the rear breaker On/Off switch to the Off position.

5. I then repeat this process every time I re-power the unit.

6. Music does not play during the first 20 seconds. When I use the extension cord after 20 seconds I get a final click that then allows music to play. It also turns on the LED light for the Cary Logo.

Sailcappy,

Thanks for the detailed start up procedure.

1. Prior to doing anything I check that the rear breaker On/Off switch is set to the off position and the front Standby/Active switch is set to the Standby position.

......"and the front Standby/Active switch is set to the Standby position."

Are you saying the front power switch is a maintained contact switch and not a momentary contact switch?

In other words the push button switch has two positions, in and out?

You did not give the shut down procedure but I assume you

put the amp in standby by pushing the power switch on the front panel first and then flip off the switch on the back panel.

6. Music does not play during the first 20 seconds. When I use the extension cord after 20 seconds I get a final click that then allows music to play. It also turns on the LED light for the Cary Logo.

So the final click is the killer.....

Have you thought about sending the Agon Link of this thread of yours to Cary service support?

A look inside of the Cary 7.25.
.

Sailcappy,

I forgot to ask. Is your friend, that works for the power company, an Electrical Engineer? An electrical technician?

The reason I ask is your friend qualified, confident, to preform work inside the electrical panel of your apartment?

Nothing major.... Just move the hot conductor of the audio 20 amp dedicated circuit to another 20 amp breaker on the other Line, leg, bus in the electrical panel. (Providing there are any spares. If there is not a spare he could use a breaker that is being used, for the test.)

If you are not sick of tests yet one more test you could try......

If the problem is poor power quality you could rule out the offending electrical device/s, equipment, appliances, CFL lights, ect, in your apartment is the cause.

You will need a flash light....
Turn off ever breaker at the electrical panel except the main breaker, if you have one, and the breaker that feeds the dedicated circuit to the Cary amp.

I lied, one more test. I would sure like to know what the VD, voltage drop, looks like at the end of the 50' 16/3 cord as the Cary amp is going through it's active start up cycle...... Especially that last relay click you hear.

If the 50' cord only has a single female receptacle you would need an additional receptacle to plug in the test leads of the multi meter. You could use a plug strip for the test? (Plug strip plugged into the 50' cord.)
.

Is the AC cord plugged in on the same side of the line as the preamp and front end of the system?

Are you saying the front power switch is a maintained contact switch and not a momentary contact switch? In other words the push button switch has two positions, in and out?

• The front switch has two positions (though very subtle) either pushed in for Active or out for Standby.

• With the extension cord attached the rear On/Off breaker remains in the On position. My current operation (again with extension cord attached) is to only to change the unit from Standby to Active and visa versa when I want to listen to music or not. I never touch the rear circuit breaker On/Off Switch I leave it in the On position.

Have you thought about sending the Agon Link of this thread of yours to Cary service support?

• I will send it to them and I have been keeping them in the loop with no feedback as of late.

The reason I ask is your friend qualified, confident, to perform work inside the electrical panel of your apartment? Nothing major.... Just move the hot conductor of the audio 20 amp dedicated circuit to another 20 amp breaker on the other Line, leg, bus in the electrical panel. (Providing there are any spares. If there is not a spare he could use a breaker that is being used, for the test.)

• He said all the wires are live coming in to the breaker box and it is not a good idea to switch them as there is no way to kill the current coming into the box.

Turn off ever breaker at the electrical panel except the main breaker, if you have one, and the breaker that feeds the dedicated circuit to the Cary amp.

• I turned off all circuit breakers and unplugged everything I could physically remove from every outlet in the apartment so that just the Cary was plugged into the wall without the extension cord. The Cary On/Off breaker blew as usual after 20 seconds after I went from Standby to Active mode.

I would sure like to know what the VD, voltage drop, looks like at the end of the 50' 16/3 cord as the Cary amp is going through its active start up cycle...... Especially that last relay click you hear

• I attached a three way strip I had lying around into the end of the extension cord. I then plugged the Cary into one of the sockets and the voltage meter into the other.
• When turn the circuit breaker from Off to On the voltage at the end of the extension cord does not change. It remains at 118 volts. When I press the front button from Standby to Active the voltage remains at 118 volts for the 20 second duration. At that last relay click (at about 20 seconds) the voltage dropped from 118 volts down to 115 volts for split second and then back up to 118 volts.

Is the AC cord plugged in on the same side of the line as the preamp and front end of the system?

• All of these tests are performed with just the Cary plugged into the outlet and nothing else.