UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Mike. Watterson · 15th Jul 2019, 11:58 am

The capacitor testing method should be OK for 4uF and larger, maybe even 1uF if the meter is a 10 M Ohm input impedance.
Even an old analogue 20 K Ohm per volt meter is 1M Ohm on the 50V range, same as 1M Ohm of a cheap DMM. I learnt that trick back in 1970s with an analogue meter. DMMs are often the same input impedance on all lower voltage ranges.

15th Jul 2019, 11:58 am	#19
Mike. Watterson Heptode Join Date: Dec 2014 Location: Limerick, Ireland. Posts: 901	Re: Roberts R200 radio not functioning. The capacitor testing method should be OK for 4uF and larger, maybe even 1uF if the meter is a 10 M Ohm input impedance. Even an old analogue 20 K Ohm per volt meter is 1M Ohm on the 50V range, same as 1M Ohm of a cheap DMM. I learnt that trick back in 1970s with an analogue meter. DMMs are often the same input impedance on all lower voltage ranges.