UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Kolster-Brandes MR10

PJL · 7th Oct 2019, 10:59 pm

R=100, V=3.2 and I=V/R so the cathode current is 32mA which is very much less than the trader values for combined anode and screen current of 44mA. It is therefore not the EL84 pulling the HT rail down.

It's a long thread and I am not sure if you have replaced the 3 way electrolytic but if you have then this almost certainly confirms the rectifier needs replacing.

7th Oct 2019, 10:59 pm	#95
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Kolster-Brandes MR10 R=100, V=3.2 and I=V/R so the cathode current is 32mA which is very much less than the trader values for combined anode and screen current of 44mA. It is therefore not the EL84 pulling the HT rail down. It's a long thread and I am not sure if you have replaced the 3 way electrolytic but if you have then this almost certainly confirms the rectifier needs replacing.