UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Bush AC11

RetroGuy527 · 16th Oct 2019, 7:16 pm

The caps arrived and I've started to go through some basic checks.

Resistance from Live to chassis is open circuit (Good)
Resistance between primary and secondary on mains transformer is also open circuit (good)
Primary side resistance are a little higher than both bush and trader but within <10% error.

Secondary side is causing me a few issues however. At first I thought it was toast (and the transformer does look a little tired) however comparing the trader sheet to the Bush sheet I can't make sense of the readings. Basically they don't agree IF I have understood them, correctly. I'm 87% of the resistance the trader sheet says and WAY off the Bush one - around 50%.

I'm going to try and summaries these and post later, but, I wondered if anybody else had come across the same problem (or is it just me).

16th Oct 2019, 7:16 pm	#16
RetroGuy527 Triode Join Date: Sep 2019 Location: Chelmsford, Essex, UK. Posts: 30	Re: Bush AC11 - Newbie Project The caps arrived and I've started to go through some basic checks. Resistance from Live to chassis is open circuit (Good) Resistance between primary and secondary on mains transformer is also open circuit (good) Primary side resistance are a little higher than both bush and trader but within <10% error. Secondary side is causing me a few issues however. At first I thought it was toast (and the transformer does look a little tired) however comparing the trader sheet to the Bush sheet I can't make sense of the readings. Basically they don't agree IF I have understood them, correctly. I'm 87% of the resistance the trader sheet says and WAY off the Bush one - around 50%. I'm going to try and summaries these and post later, but, I wondered if anybody else had come across the same problem (or is it just me).