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

Mike. Watterson · 11th Jul 2019, 4:57 pm

Yes. DO NOT APPLY MAINS without FIRST replacing the faulty capacitors. The high impedance speaker would be destroyed and it's practically irreplaceable.

A regular modern test meter or capacitor meter (even the fancy ones with LCD panels) can't test capacitors for leakage. You need a special 300V current limited tester sensitive to under 1uA current. I made one out of the flash electronics of a single use film camera as such devices aren't available except as expensive lab gear.

It's likely all five capacitors are totally useless. The 2uF, 4uF and three 100nF.

I worked in a capacitor factory in mid 1970s and have been repairing old stuff since the late 1960s. I've also worked in Electronic Design over 20 years.

This is a wonderful piece of history. Research and don't be hasty.

11th Jul 2019, 4:57 pm	#33
Mike. Watterson Heptode Join Date: Dec 2014 Location: Limerick, Ireland. Posts: 901	Re: VE301W Radio help Yes. DO NOT APPLY MAINS without FIRST replacing the faulty capacitors. The high impedance speaker would be destroyed and it's practically irreplaceable. A regular modern test meter or capacitor meter (even the fancy ones with LCD panels) can't test capacitors for leakage. You need a special 300V current limited tester sensitive to under 1uA current. I made one out of the flash electronics of a single use film camera as such devices aren't available except as expensive lab gear. It's likely all five capacitors are totally useless. The 2uF, 4uF and three 100nF. I worked in a capacitor factory in mid 1970s and have been repairing old stuff since the late 1960s. I've also worked in Electronic Design over 20 years. This is a wonderful piece of history. Research and don't be hasty.