Weird popping noise from ProJect Tube Box DS phono preamp

Graham Fry

New Member
Hi,

I have a strange problem with my otherwise excellent ProJect Tube Box DS phono preamp. Every 63 seconds I get a popping/woodpecker kind of noise come through.
I have eliminated the amp, speakers, turntable and cartridge.
The noise is there right from start up and doesn't change despite how long the preamp is on/active. The noise is there whether music is playing or not.
Does anyone have any ideas what this could be? I have also tried all the various combinations of jumpers on the back including subsonic filter and it is always present.
Help!
Thanks, Graham
 
I have eliminated the amp, speakers, turntable and cartridge.
Welcom Graham!
Substitute preamp then. Is everything well grounded?
I can't imagine what that 63 second thing is...A traffic signal?
Others will chime in. You will be smothered with suggestions from actual experts
 
Thank you guys! Found the problem, it wasn't the router but closely related, it was a nearby Chromecast. I moved it and problem solved.

Thank you so much, good tonknow there are helpful folks out there :)
 
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