Beogram 3300, non-B&O amplifier grounding issues

Dear forumites,

 

I received my parents' old Beogram 3300 a few months ago, and had some starting issues with it that I've solved (distortion caused by other plugins in the amplifier etc.)

I recently purchased a new cartridge (Soundsmith SMMC4, replacing the very old and worn original MMC4) and that is all good.

Everything is working excellently except for the infamous bass hum.

Up until now I've mostly ignored it since it's only really noticeable at high volumes or when the quiet sections of songs are playing - but now that I've invested more into it I really want to get the best performance out as well.

I plug the turntable into my non-B&O amplifier through the regular 5-pin adapter with a grounding cable (like this) but using the grounding cable in any capacity doesn't remove the humming - it has some effects other than that, so it's clearly connected, but nothing good happens when I attach it to the amplifier's grounding screw.

The only thing that removes the hum is when I hold a few fingers on top of the metal part of the hood.

Is there any alternative way that I could use to simulate this effect? Attaching some sort of specific type of wire to the chassis/hood? Could using the Beomaster 3300 solve it?

 

/Gustaf

Could also be a poorly made adapter and how it is wired to be grounded or picking up interference. I’d buy an adapter from someone who knows B&O (like Steve) or maybe it is time to add a Beomaster

Just to wrap this up. I am now using it with a Beomaster 3300. Working as a charm.