Thread: Incorrect bell?
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Old 8th Jul 2019, 2:56 pm   #35
Join Date: May 2008
Location: Derby, UK.
Posts: 7,610
Default Re: Incorrect bell?

The parts you have marked are on the secondary side. The red and green are capacitors, but the blue looks more like an inductor (coil) which would give a multi-stage filtering effect.

The other two electrolytics (one of which is dfesignated C1; I can't read the number on the other) are on the primary side. The green-blue component L1 mounted "standing up" between them is another inductor.

You will need some capacitance on the primary side to persuade the power supply to start up. You could try removing one or the other capacitor; probably try the larger one.
If I have seen further than others, it is because I was standing on a pile of failed experiments.
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