Philips EL3576 (new) restoration - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

borispoodle · 7th Jun 2019, 11:39 am

I did try the metal food can trick to no avail, mu metal is just so expensive so I will not bother unless I find a piece as scrap, thanks cheerfulcharlie. The cable run from the head to the preamp is really long, about 15 inches by the way.

borispoodle · 7th Jul 2019, 5:04 pm

Problem solved.
Under the pre-amp pcb lies a thin aluminium screening sheet. That was not adequate.
Mu metal is very expensive.
I found an old crushed organ pipe with walls a good 1mm thick. This was 80% lead. Cut and hammered a 5 x 10" sheet, fixed this as the pcb screen and earthed it to the pre-amp earth. Works great.

7th Jun 2019, 11:39 am	#21
borispoodle Triode Join Date: May 2019 Location: Sidcup, Kent, UK. Posts: 10	Re: Philips EL3576 (new) restoration I did try the metal food can trick to no avail, mu metal is just so expensive so I will not bother unless I find a piece as scrap, thanks cheerfulcharlie. The cable run from the head to the preamp is really long, about 15 inches by the way.

7th Jul 2019, 5:04 pm	#22
borispoodle Triode Join Date: May 2019 Location: Sidcup, Kent, UK. Posts: 10	Re: Philips EL3576 (new) restoration Problem solved. Under the pre-amp pcb lies a thin aluminium screening sheet. That was not adequate. Mu metal is very expensive. I found an old crushed organ pipe with walls a good 1mm thick. This was 80% lead. Cut and hammered a 5 x 10" sheet, fixed this as the pcb screen and earthed it to the pre-amp earth. Works great.