UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Quad II problem

Diabolical Artificer · 23rd Nov 2022, 7:16 am

Your getting there, need to sit and re-read all posts so far to make sense of it, here's the schematic for those playing along at home..

Looking at yon schematic there's not many things that can cause a low resistance to ground, the biggest being an OPT primary/secondary SC, SC or OPT primaries, really leaky C4/C6, something on the HT rail with bad insulation like the choke. They may be others not spotted.

Andy.

23rd Nov 2022, 7:16 am	#40
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,669	Re: Quad II problem - Rectifier blowing (GZ32) Your getting there, need to sit and re-read all posts so far to make sense of it, here's the schematic for those playing along at home.. Looking at yon schematic there's not many things that can cause a low resistance to ground, the biggest being an OPT primary/secondary SC, SC or OPT primaries, really leaky C4/C6, something on the HT rail with bad insulation like the choke. They may be others not spotted. Andy. Attached Thumbnails __________________ Curiosity hasn't killed this cat...so far. Last edited by Diabolical Artificer; 23rd Nov 2022 at 7:24 am.