UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Marshall JTM45 Guitar Amplifier- Mains (Primary)Fuse Blows

'LIVEWIRE?' · 15th Aug 2018, 9:14 am

George(buggles) says 'put a 1n4008 in series with each anode of the GZ34, whilst Boater Sam says fit 1N400x diode in series with a 2k resistor across the rectifier valve, i.e. from each anode to the valve's Cathode I can se what the latter would do, but am wondering why dropping 0.7v out of 350v or more would make any difference.

15th Aug 2018, 9:14 am	#47
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: Marshall JTM45 Guitar Amplifier- Mains (Primary)Fuse Blows George(buggles) says 'put a 1n4008 in series with each anode of the GZ34, whilst Boater Sam says fit 1N400x diode in series with a 2k resistor across the rectifier valve, i.e. from each anode to the valve's Cathode I can se what the latter would do, but am wondering why dropping 0.7v out of 350v or more would make any difference.