UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - AVO 2 Panel

les24preludes · 11th Jun 2021, 1:20 pm

I have an AVO 2 Panel tester which doesn't work. Don't know why - meter lost magnetism or what. Before I open up the meter part I'm wondering what's the simplest fix. One easy solution it seems would be to use the panel part and make a basic emissions tester from scratch to connect to it. If so, what's the 9 pin connector - a B9G? Diameter of pins is 26mm in a straight circle.

Any ideas for a basic emissions tester, circuit etc? I have bench supplies at 30v/2A or 15v/4A for the heaters and grid bias. I could rig up a basic HT and use a 150v glow tube for instance. I'd use a multimeter to read off results. I only intend to measure smaller input tubes and maybe some outputs like 6L6, 6V6 etc. Nothing exotic or bigger.

Or if I open up the Meter unit, can I substitute a couple of test points for the meter and use a multimeter instead?

11th Jun 2021, 1:20 pm	#1
les24preludes Triode Join Date: Feb 2021 Location: London, UK Posts: 10	AVO 2 Panel - restoration ideas? I have an AVO 2 Panel tester which doesn't work. Don't know why - meter lost magnetism or what. Before I open up the meter part I'm wondering what's the simplest fix. One easy solution it seems would be to use the panel part and make a basic emissions tester from scratch to connect to it. If so, what's the 9 pin connector - a B9G? Diameter of pins is 26mm in a straight circle. Any ideas for a basic emissions tester, circuit etc? I have bench supplies at 30v/2A or 15v/4A for the heaters and grid bias. I could rig up a basic HT and use a 150v glow tube for instance. I'd use a multimeter to read off results. I only intend to measure smaller input tubes and maybe some outputs like 6L6, 6V6 etc. Nothing exotic or bigger. Or if I open up the Meter unit, can I substitute a couple of test points for the meter and use a multimeter instead?