Luxorita Swedish radio

Hi Wayne, the first thing you should probably do is get a schematic. You don't want to just slap an earth on the chassis without understanding the implications of that first (ie: is it a hot chassis?). It LOOKS like it might be ok to do it - it does have a transformer. Where is the signal earth wired to? If its wired to the chassis then you might probably be ok - but start with a schematic... or draw one out.

Cheers, Steve

You can go over, but you should never go under the voltage rating specified by the manufacturer. Having said that, this set has a lot of very high voltage rated caps without any good reason I can see for why - and so I am open to a technical reason against this from someone, but I would use 630V caps everywhere - with two exceptions:

There are two caps (C25, a 5nF and C23, a 10nF) marked 3750V - I would *expect* that a modern 3kV cap would be perfectly adequate where those are being used (I'd probably use 1500V and be comfortable at that as long as the radio was for my own use) - A quick look finds nz.rs-online.com/web/p/mlccs-multilayer-ceramic-capacitors/9060714 for a 10nF - I didn't see a 5nF option in that voltage range but you can only get the 10nF in a pack of 5, at least from RS, so use two in series to get 5nF - this will also raise the voltage handling by spreading the voltage across the two.

It's possible maybe that the reticulated power supply in this radios birth country was unreliable and so maybe electronics got higher voltage rated components? I don't know... but the ratings seem higher than they need to be at first glance to me.

Cheers, Steve