@Seb, while the issues sound familiar, they also seem to be quite different from mine (an R707, not an F707). Note that all F/R707's need recaps....
Thanks very much, @nutronic! I checked mine and found several of these vias blackened. I could not be bothered with testing them – I found that...
Thanks, @Shaman32! I have in the meantime decided on a spares unit which is on its way, so I won't have any need anymore.
Thanks for this very valuable piece of information, @Valentin! I guessed as much from my testing the mechanism manually. Indeed, I managed to make...
I might need some help with this from someone who knows the Alpha-mechanism better than I do. This AIWA HS PL55 that I have here does not do...
I just received an NOS, in-the-box AIWA PL-303 in mint condition and restored it over the last few evenings. The restoration went fine and the...
I am looking for a spare charge port for an AIWA PL30/303 as shown in the picture (the component as such as it is soldered onto the board,...
Excellent detective work, @nutronic! I replaced all SMDs right after I got my F707, but this was at the beginning of my career as a tinkerer, so I...
Many thanks for this meticulous and precise report, @nutronic! This will come in handy when I get to working on my F707 again – which will,...
Thanks for the hint! I hooked up my converter to the scope tonight and took it for a spin. Unfortunately, I do not seem to be any wiser–yet. It...
Great news! After reading your post, I was going to suggest you do exactly that. 17 windings seems manageable. Unfortunately, this does not seem...
@nutronic, how did you figure out that the CTL line needs to be pulled low to turn on the DCDC-converter? Is Q801 doing the pulling? I have been...
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