23-11-2015, 09:04 AM
(This post was last modified: 23-11-2015, 09:05 AM by Radio Fixer.)
!2 years ago I bought a MK 1 and a MK 11 for a knock down price. One was only supposed to be for spares but in the event I repaired both of them and they still work and calibrate spot on with a "Standard Valve". At that time I wrote two articles on them which have had wide circulation and you are welcome to copies of the original text (not copies of the articles). This text was updated about 5 years ago because some of it wasn't as clear as it could be and with hindsight had errors. Send me an e-mail if you want the info.
I drew a circuit diagram from the AVO one but it doesn't include all switching. However, there is one in a back edition of a magazine called Radio Bygones, in a pair of articles from about 3 years ago. This was written by a couple of learned guys who's approach was to replace every passive, metal rectifier and valve component inside (and even recommends new meters if needed). You could call this restoration where as I called mine repair. You could try and get copies of these.
Gary
I drew a circuit diagram from the AVO one but it doesn't include all switching. However, there is one in a back edition of a magazine called Radio Bygones, in a pair of articles from about 3 years ago. This was written by a couple of learned guys who's approach was to replace every passive, metal rectifier and valve component inside (and even recommends new meters if needed). You could call this restoration where as I called mine repair. You could try and get copies of these.
Gary
