I have a Old Analogue 2225 Tektronix Oscilloscope. When I switched it on yesterday after a few months of inactivity, the screen didn't light up and after 5 seconds or so I heard a pop and a burning smell from the rear. I had a look inside and found that a capacitor on the main power supply board had blown up (see attached photo). This capacitor is labelled on the circuit board as C903. I have found a service manual with circuit diagrams and this capacitor is placed between neutral and earth, it says 0.0022 next to it. There is an identical capacitor between the live and earth too (C904) but this one appears to be ok.
After contacting Tektronix directly they do not have parts for these anymore so I am trying to find an alternative.
If any one can help it would be much appreciated.