kevzep
Its all about the Music
So, its started, I finally got the next AU999 on the bench and I spent an hour or so in the lab with it, started a bit of recapping and a few other bits as well as assessing its condition.
This thing is a bit butchered up to be honest, it has had drivers replaced, some output transistors and I have found a couple of wiring errors, and these just looking at it and going from memory.
My work has been cut out for me here, not sure how quickly this will progress, after repairing the Marconi 2018 520mhz RF generator, I seem to have a HP8675A RF generator on the bench now too, but the HP frizzed my brain, its complicated !! So I took a break to work on one of my favourite amps!!
I also have a build going for restoring some Crown Macro-Techs, so a lot on, and there are a lot of concerts on over the next few weeks too which means long days for me and a lot of organizing, time is precious!!
So there it is on the bench, and some of the bits I started pulling out of it....Someone has mounted a volume pot on the inside, left the OEM one in there, wired the new one up and just left it floating around in there, then there are wiring errors on the F1231 and F1277 boards, one of the bias transistors has been replaced with something less than ideal.
I'm not actually sure this thing would have been working, but anyhow, I'm ripping into it and we'll make it sing again....
This thing is a bit butchered up to be honest, it has had drivers replaced, some output transistors and I have found a couple of wiring errors, and these just looking at it and going from memory.
My work has been cut out for me here, not sure how quickly this will progress, after repairing the Marconi 2018 520mhz RF generator, I seem to have a HP8675A RF generator on the bench now too, but the HP frizzed my brain, its complicated !! So I took a break to work on one of my favourite amps!!
I also have a build going for restoring some Crown Macro-Techs, so a lot on, and there are a lot of concerts on over the next few weeks too which means long days for me and a lot of organizing, time is precious!!
So there it is on the bench, and some of the bits I started pulling out of it....Someone has mounted a volume pot on the inside, left the OEM one in there, wired the new one up and just left it floating around in there, then there are wiring errors on the F1231 and F1277 boards, one of the bias transistors has been replaced with something less than ideal.
I'm not actually sure this thing would have been working, but anyhow, I'm ripping into it and we'll make it sing again....