McMichael 471 Restoration
This was my second restoration. It is a 5 valve inc power supply rectifier.
The transformer had a bad voltage change contact, the reservoir cap was really leaky. I fixed the contact and replaced the cap. So far so good.
On the main chassis, I found that most of the wax capacitors 0.1uF or higher were really leaky, so replaced those with new polyester ones. There is a screened (metalised) IF amplifier tube in there, which I found had lost it's screening, due to general rot. I found I was able to temporarily wrap it with aluminium foil, and earth, which worked!
The magic eye was pretty much worn out, which was a shame, as I was looking forward to seeing that in action.
I managed to find new old stock replacements for the EM34 magic eye and the EF39 tube.
So, with that lot in place, it was pretty much good to go.
I didn't do a lot with the cabinet, just a bit of danish oil, and I also tried to clean the speaker clock (damaging it in the process)
I'll have another go at the cabinet when I have time.
At the moment, I'm fairly happy with getting the electronics working.
Pictures attached
Cheers
Tam
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