RFI issues in phono stage-one channel only ??


Running BAT VKp10 phono into VK50se pre. The left channel has RFI intermittently. Can get loud enough to interfere with the music, and not just on quiet passages. Sounds like a spanish radio/tv station.

Also, any time the furnace or certain light switches get turned on, I get a pop, rather loud, through the same channel. This does not occur on other sources.

The RFI used to be in both channels, but a new tonearm lead and shorting plugs (for the unused XLR input on phono stage) took care of that.

Could this be a bad tube ? Grounding issues in a cable on one side only? Ideas? Thanks in advance.
128x128jfrech

Showing 1 response by zaikesman

Does the radio signal get quieter if you cup your hands around the cartridge body? If there is a tuner in your system, does it help to unplug and physically remove it along with its antenna? Is there any change in which channel is affected if you reverse the channels with your phono lead cables?