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Old 9th Jan 2020, 12:01 am   #26
julie_m
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Join Date: May 2008
Location: Derby, UK.
Posts: 7,735
Default Re: Pye CB01X4T (P131MBQ) portable radio

Quote:
Originally Posted by cdm1christopher View Post
All caps removed where all high by around 300% plus. Very unusual.
Most capacitance meters are designed in such a way as they will read high with a leaky capacitor. It is working out the capacitance by timing how long the capacitor takes to charge to a certain voltage, at a constant current. The leakage causes the capacitor to take longer to charge, so it appears to have a higher capacitance than it really does.

Some of the more sophisticated multi-component testers can measure the leakage resistance of a capacitor, in case you need to know it (anything less than infinity is usually bad news anyway).

Surely the cathodes (pointy ends!) of the metal rectifier are connected together, and to the reservoir capacitor positive? The two ends of the power transformer secondary go to the anodes, and the centre tap goes to chassis.
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