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Heatercathodeshort · 4th Mar 2018, 11:56 am

Just keep out the damp air. Oil filled and hermetically sealed line output transformers give few problems. The actual construction of most wax capacitors allowed for a 10 year life but these are are now over 50 years old!

I well remember the 'Plastiseal' capacitors giving loads of trouble when I was first in the trade. They were only 5 years old and resulted in massive leaks resulting in frame creep when warm. It was very noticeable with Sobell early double sided print receivers [TPS series] but these now perform with 100% stable linearity with good capacitors, 50 years on. John.

4th Mar 2018, 11:56 am	#5
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Capacitor problems Just keep out the damp air. Oil filled and hermetically sealed line output transformers give few problems. The actual construction of most wax capacitors allowed for a 10 year life but these are are now over 50 years old! I well remember the 'Plastiseal' capacitors giving loads of trouble when I was first in the trade. They were only 5 years old and resulted in massive leaks resulting in frame creep when warm. It was very noticeable with Sobell early double sided print receivers [TPS series] but these now perform with 100% stable linearity with good capacitors, 50 years on. John.