Amp Shutting Down, need help


I have a Cary 7.250 brand new amp that shuts down after 20 seconds in my NYC apartment. I have sent the unit back to Cary where it tests fine. I have tried the unit at my friend’s apartment and his place of work and it works fine. The unit is 100% in working order. After talking to many people I was told to attach a 50' extension cord and low and behold it worked.

The good news is that I have a dedicated 20amp circuit to this outlet. My voltage reads 118 volts and Cary said that is not a problem as the unit will work between 90 and 130 volts. I have tested for voltage on the negative lead to ground and there is no stray voltage. I have also tried the unit on other outlets in the apartment and the same problem occurs.

My mono blocks and all other components work just fine. So I’d love to hear suggestions as to how to get rid of this 50’ extension cord?

Thanks in advance.
sailcappy
"Is the breaker a GFCI (Ground Fault Circuit Interrupter) or an AFCI (Arc Fault Circuit Interrupter)? These type of breakers have a test trip push button on them."

There are no test trip buttons on any of the circuit breakers in the breaker panel.

"As for the circuit breaker used on the Cary.... Is the switch actually a breaker? The handle trips position and has to be reset? If it is indeed a breaker the more times it is tripped the weaker it becomes."

Yes it is an actual breaker as the switch has to be switched back on to put the unit back into standby. I have had it replaced to no avail.

"By chance does your friend have a clamp on amprobe so you could measure the inrush current draw of the amp on startup?
"
He did use one yesterday I have forgotten the outcome and will ask him tomorrow.

I do live in a high rise and my building said and I quote "as long as the breaker is not tripping then we do not concider you to have a problem." So much for living in a "luxury building".
"Is the breaker a GFCI (Ground Fault Circuit Interrupter) or an AFCI (Arc Fault Circuit Interrupter)? These type of breakers have a test trip push button on them."

There are no test trip buttons on any of the circuit breakers in the breaker panel.
08-15-12: Sailcappy

I asked because you said the black and white wires of the branch circuit went to the breaker.
4. The White and Black wires connected to the circuit breaker seem to be 10 guage.
When a GFCI or a AFCI breaker is used both the hot conductor and the neutral conductor, of the branch circuit, terminate on the breaker. The breakers have a white pigtail that extends to the neutral bar in the panel.

http://caryaudio.com/pdfs/manuals_2012/Model7.250_manual.pdf


How do i contact almarg?
08-15-12: Sailcappy
Well under the new Agon system you can not....

All you can do is hope Al reads this thread.....
.
Cappy, at this juncture, based on all the info you've responded with, I'll have to agree with Slikric3000's recommendation for a "line conditioner" or filtering. It's obvious the 50 foot extension cord is providing just enough filtering of noise to prevent your Cary from tripping, and based on the amount a 50 foot cord is accomplishing, you won't need much of a conditioner or filter providing you meet/exceed your amp's maximum current demands, which I couldn't locate in the owners manual.

You might also be interested in getting something for the upstream sources and preamp/processor since they would benefit the most from cleaner/stable AC. I don't have any experience with them, but you can search the Audiogon forums or other sources since I've seen this topic come up periodically regarding manufactures/models/types.

If you knew exactly what issues were plaguing your AC, you could better select what filtering topology is best suited (cost effective), then buy/treat it accordingly as there are simple products available for a fraction of cost consumer-targeted A/V types, but whatever fits your likings and wallet depth. There's quite a few manufactures making LC's; some with strictly-business cosmetics, some quite fancy with eye-candy appeal, and variances in between. Or, for a truly cost-effective option, find a high-wattage 50 ft. extention cord of color choice, coil-stack it neatly in a 8-10" diameter with cable-ties to retain shape, and hide it out of sight behind the amp. The coilded stack will even provide a higher lever of filtering. Done! Solved! (joking)

Keep us posted...
Love the colored cable idea! Not sure if I can get that by the wife factor!!!

Can you give me an idea of line conditioners vs the Syngergistic Research Telsa Powercell that i have? What do I look for in a line conditioner?