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

TonyDuell · 15th Aug 2018, 9:22 am

I think the idea of the series diodes is that if the GZ34 flashes over, they will prevent a dead short across the HT secondary winding of the mains transformer. And keeping the GZ34 in-circuit presumably allows the HT to sag under load which some users like the sound of.

15th Aug 2018, 9:22 am	#48
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,208	Re: Marshall JTM45 Guitar Amplifier- Mains (Primary)Fuse Blows I think the idea of the series diodes is that if the GZ34 flashes over, they will prevent a dead short across the HT secondary winding of the mains transformer. And keeping the GZ34 in-circuit presumably allows the HT to sag under load which some users like the sound of.