Tesla 21203 Osa 8. Kondensaattoreitten asennus.

[@xsc1000]

I recommend to replace 5000p cap that is parallel to rectifier diode. There is no problem that cap is a little leaky, but this cap is connected to mains and sometimes it get shorted. When it happens it blows both scale bulbs but sometimes it also damages first section of electrolytic cap.

[@marssiantenni]

Thanks for the advice. I was wondering about this myself, that the capacitor has a high voltage load. Unfortunately, I didn't have a capacitor with a high enough voltage rating that would have fit inside the old tube, so I had to leave this one, like the antenna capacitor, in place.
I need to order small Y2-class capacitors.

[@xsc1000]

@@marssiantenni This is not Y2 capacitor. Its just standard capacitor, maybe you can think about it as X2 but with high DC load (200V). You need just right voltage rating, because max voltage (theoretically, when diode is warmed but no current used by radio) is 230* SQRT2 * 2, so 650V.

[@marssiantenni]

@@xsc1000 Thats correct. Y2 classified capacitors are more safety because they wont short in failure.
Of course any capacitor with sufficient voltage withstand can be used.
HNY 2025 👍