Bottlehead Forum

Bottlehead Kits => BeePre => Topic started by: portway on January 18, 2018, 09:41:33 PM

Title: Loud mains hum on both channels
Post by: portway on January 18, 2018, 09:41:33 PM

Hi, I have been running my Beepre for over a year now with no problems and have been really satisfied with the sound quality. This morning when I turned the system on there was/is a loud mains frequency hum from both channels independant of source or volume level. I can still hear music behind the hum and I am wondering if there is a blown capacitor somwhere or if a ground has become disconnected somewhere. Any advice on troubleshooting very welcome. Thanks Tony.

Title: Re: Loud mains hum on both channels
Post by: Paul Birkeland on January 19, 2018, 04:39:16 AM

I would start with a voltage check and report any oddities here.  Also let us know what your AC line voltage is.

Title: Re: Loud mains hum on both channels
Post by: Doc B. on January 19, 2018, 05:09:08 AM

And, not to state the obvious, but let us know if a visual inspection has turned up anything that looks disconnected or damaged.