Phono 3 noise issues

[Damien]

Hi All.

I’m new to the forum but realise from the wealth of experience out there it will be quicker to ask for advice than reinvent the wheel.

I’ve recently acquired a WD Phono3 & PSU 3.

It exhibits a lot of background noise even with no turntable connected. Not mains based but more like what you would hear with a poorly tuned radio station.

I’ve pulled it apart & the build quality leaves a lot to be desired so plan to rebuild as there are definitely some poor solder joints & some of the cabling is not well shielded.

Whilst I’m at it I’d like to incorporate any recommended improvements for both units so would appreciate recommendations.

It currently has a pair of CED? G7LG7 & a J J ECC83S.

The caps & resistors all look to be pretty low spec & am happy to invest in better quality components.

Any suggestions would be welcome.

The phono stage is coupled to a Michel Gyrodeck SE with an SME V tone arm & Cartridge Man Music Maker 3 high output MM cartridge with an output of 4 mV & a loading requirement of 47k.

Thanks in advance.

Damien