Hi:
Floodybust:
I've printed the manual. The caps you mentioned are the same I mentioned from the photos, with the exception of the 25V one. I hadn't really looked at it due to it being surrounded by HV giants
Regarding the light bulb, what power rating should it have? If I understood correctly, it should a little bit higher than the supply consumption so that it lights up and limits the current in case it exceeds it right?
Thanks for the warning regarding polarity. I have marked a few sentences from the manual that seems to be common mistakes (like waiting for filaments to heat up before applying high voltage, to not change polarity when its on, capacitive loads, etc...). That one is getting the special treatment of both being marked and underlined! (By the way, just rechecked now: circuit common=earth/chassis ground).
Gyro:
It is both sad to hear that the fuse will not protect the transformer and great that it seems to be fine!
Regarding moving the capacitor to the other side of the board, I don't this is a good idea because it will actually be quite close to the metal cover (the space under is quite limited).
I think your temperature concerns might be somewhat justified. Since at the time all the equipment used electron valves, I would expect capacitor manufacturers to pay special attention to temperature. On the other hand, I've heard horror stories of old cap, especially electrolytics like the ones we have here...
Yesterday I browsed through Mouser and I found this subtitutes. Knowing the temperature effect and that I didnt expect the supply to be operating continuosly for long amounts of time, are they ok?
- For the 0.05uF 4kV leaked one:
https://www.mouser.es/ProductDetail/505-FKP1Y024707H00MS- For it's brother, the 0.01uF 4kV one:
https://www.mouser.es/ProductDetail/505-FKP1.01-6000-10- For the two 40uF 350V:
https://www.mouser.es/ProductDetail/661-EKXL401ELL470MJ4- For the 20uF 350V (C103):
https://www.mouser.es/ProductDetail/871-B43821F5226M000I still have no substitute in mind for the 25V yet.
I've never replaced old caps before, but because they were in filtering duties, I chose ones with a higher capacitance as well as higher voltage rating for safety. I've also tried to stick to known brands I've heard from Dave videos (WIMA, NichiCom). I would be most grateful if you could check them over to see if the were ok.
Many thanks to all for the help received.