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External PSU shuts down the breaker

Hi! I have a Gold Note PH10 phono and just received the PSU 10. After I turn on the PSU, it shuts down the breaker in the house. I have tried to plug in without connecting the phono, same results. It was all right when I tried in a HIFI shop, and worked well, even connecting to the phono. I would be suspicious, but every single component is working good (with higher load also), except the PSU.
What can it be? 
128x128korakotta
15 responses Add your response
jperry
2,448 posts
 
Try it on a different circuit in your house, If it still kicks the breaker, Take it back to the hi fi shop
winoguy17
1,119 posts
 
 Sounds like a short.
larryi
3,982 posts
 
Perhaps it is tripping a ground fault interrupter (GFI) circuit protector in your home while the problem is not a dead short that would trip the circuit breaker at the stereo shop if it did not have GFI protection.  In any case, I would not want something that is tripping breakers and raising safety concerns even if it "works."
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larryi
3,982 posts
 
This unit has a low voltage linear power supply for a solid state phono preamp/equalizer.  It should not have a massive bank of capacitors that would draw enough current to trip any kind of breaker.  I would not fool around with something that might be faulty--not just because of safety concerns, but, also because I would not want to fry other downstream components.
erik_squires
16,056 posts
 
Is it possible the existing circuit is close to overload?

What happens if you plug in a house lamp?
jea48
4,425 posts
 
korakotta

SANDVIKA, Akershus, Norway

Joined March 27, 2018

.

My bad for not checking first.

I have no idea what electrical safety codes are in your country.


EDIT:
Make sure the PSU is for 220Vac nominal.
.
erik_squires
16,056 posts
 
This unit does have an integral fuse. Unless that fuse has been replaced with something far larger than required, it would be quite difficult for it to be tripping breakers on its own.

The GFCI / spark arrestor type breakers might though.
korakotta's avatar
korakotta OP
50 posts
 
Thank you all for the helpful answers!

I have tried to switch back the breaker after the shut down, and I couldn`t. The circuit isn`t close to overload, tried with various devices.
PSU is for 220VAC nominal.
I am very sure the breaker is an AFCI. I am renting, so I can`t do much about.
I bought the unit online and it`s working in the stereo shop, so what to do now?
erik_squires
16,056 posts
 
Hi OP
Breakers are designed for safety.

Remove everything from the circuit, and attempt to reset the breaker. If you do, add one device at a time. Inspect any cables for damage. If you have a bad cable or device, it will trip when you insert it again.


If after you unplug 100% of all devices you still can't reset the breaker it requires an electrician to diagnose and fix.

Best,
E
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gs5556
1,234 posts
 
Before you do anything make sure you don’t have a ground fault to the chassis. Measure the resistance between the hot and ground at the iec inlet and confirm there is infinite resistance.

Then check your outlet and make sure it’s wired correctly.
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