Tolerance for high voltage capacitor in a microwave oven.

[MidAtlantian]

HI, I am trying to repair a microwave oven (yes, I am aware of the hazards, both microwave and high voltage) and have found that the high voltage capacitor has shorted. I have a replacement (for a smaller unit) but it is .76mf vs the original .86mf. Will this allow too much ripple of the resulting voltage? Will it damage the magnetron?
Thanks for any suggestions.

 

[kellys_eye]

Assuming a standard microwave (not the inverter version) then the DC is at 50/60Hz so the capacitor isn't reducing ripple but is used to make a voltage doubler. You may see (feel?) a small reduction on power but it won't do any damage.

 

[MidAtlantian]

Assuming a standard microwave (not the inverter version) then the DC is at 50/60Hz so the capacitor isn't reducing ripple but is used to make a voltage doubler. You may see (feel?) a small reduction on power but it won't do any damage.

Thank you for your reply! Yes, I suspect "feel" might not be an ideal way to make a judgement.

So it is effectively the total energy the capacitor is able to store (for each wave) that limits its function? That would mean the resulting DC voltage going to the magnetometer would be a bit lower? Will the difference be the full 12% represented by the difference in capacitance?