AVO EA113 Documentation - UK Vintage Radio Repair and Restoration Discussion Forum

Alistair D · 8th Jul 2022, 1:45 pm

While fault finding my recently acquired EA113 it soon became apparent that the servicing documentation was lacking in both quality and quantity. so much so that I decided to do something about it.

So far I have completed a component layout diagram for the switch board. Currently I am working on the main circuit diagram where component values and tag numbers are being added.

As usual other things are getting in the way so it will be a while before it is completed. I will post it up when it is done. Meanwhile I have attached a copy of the comp assy.

Al

jamesinnewcastl · 8th Jul 2022, 3:40 pm

Hi Al

I have 5 EA113s, or is it 6? Anyway, one is in pieces and has been for ages. What you are doing will make my life so much easier!

I have mused with the idea of making a test rig. One where you strip down the instrument and then 'reassemble' it with the rig connectors and wiring extending all the component parts physically so that you can get at all the components. The meter was never designed for easy maintenance!

As ever I am now fired up and would publish the design or perhaps lend out the final rig to others. Probably I'll add it to my list of projects!

Cheers
James

Dekatron · 8th Jul 2022, 5:26 pm

Nice!

Went straight into my EA113 folder!

Chris55000 · 9th Jul 2022, 1:37 pm

Thanks for that Al!

Chris Williams

8th Jul 2022, 3:40 pm	#2
jamesinnewcastl Heptode Join Date: Jul 2009 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 723	Re: AVO EA113 Documentation Hi Al I have 5 EA113s, or is it 6? Anyway, one is in pieces and has been for ages. What you are doing will make my life so much easier! I have mused with the idea of making a test rig. One where you strip down the instrument and then 'reassemble' it with the rig connectors and wiring extending all the component parts physically so that you can get at all the components. The meter was never designed for easy maintenance! As ever I am now fired up and would publish the design or perhaps lend out the final rig to others. Probably I'll add it to my list of projects! Cheers James

8th Jul 2022, 5:26 pm	#3
Dekatron Octode Join Date: May 2009 Location: Linkoping, Sweden Posts: 1,465	Re: AVO EA113 Documentation Nice! Went straight into my EA113 folder! __________________ Martin, Sweden

9th Jul 2022, 1:37 pm	#4
Chris55000 Nonode Join Date: Aug 2007 Location: Walsall Wood, Aldridge, Walsall, UK. Posts: 2,874	Re: AVO EA113 Documentation Thanks for that Al! Chris Williams __________________ It's an enigma, that's what it is! This thing's not fixed because it doesn't want to be fixed!