Re: AEG component identification
Apparently. If the capacitors are not polarised, the spark electrode polarity might not matter, but perhaps they found one way was better due to differences between the electrodes, and obviously it makes sense for the helix to be earthed to the chassis.
Even if the selenium rectifiers were working I wouldn't trust a computerised automatic component tester to identify them as it probably doesn't know anything about selenium. They will have much higher slope resistance, forward drop and poorer forward / reverse ratio than the kind of diodes it's been programmed to recognise. Any component that is just barely open-circuit is likely to be identified as a capacitor, but it might also mean that the inter-plate capacitance of a working rectifier has fooled it.
An AVO will probably test them, a digital multimeter resistance-range or diode test voltage might be too low. Or a bench power supply, resistor and milliammeter. Obviously you can only prove that they are not leaking with a suitably high voltage from e.g. a 250V megger.
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