UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - AVO wattage and powerfactor unit for 7's & 40's

SeanMcK · 28th Nov 2017, 5:24 pm

Does anyone know the specified values for the three fixed resistors in these units?
I have one for the Avo 40 and in that two of these resistors have the same 4 band colour code, the 3rd one appears to have only 3 colours. See photos.

As I understand the code the 4 banded resistors are meant to be 4.7k 5%, they measure approx 5.4k. I am stumped over interpreting the colour code for the third fixed resistor but from memory it measures approx 10.6k. The variable resistor is marked 35k.
I have seen somewhere, probably in here, a photo of the insides of the Model 7 version of this unit and the variable resistor was marked 100k so I am presuming the fixed resistors also have values which differ from those in my one.

28th Nov 2017, 5:24 pm	#1
SeanMcK Retired Dormant Member Join Date: Sep 2008 Location: Londonderry, Northern Ireland, UK. Posts: 58	AVO wattage and powerfactor unit for 7's & 40's Does anyone know the specified values for the three fixed resistors in these units? I have one for the Avo 40 and in that two of these resistors have the same 4 band colour code, the 3rd one appears to have only 3 colours. See photos. As I understand the code the 4 banded resistors are meant to be 4.7k 5%, they measure approx 5.4k. I am stumped over interpreting the colour code for the third fixed resistor but from memory it measures approx 10.6k. The variable resistor is marked 35k. I have seen somewhere, probably in here, a photo of the insides of the Model 7 version of this unit and the variable resistor was marked 100k so I am presuming the fixed resistors also have values which differ from those in my one. Attached Thumbnails