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Sideband · 21st Feb 2021, 5:21 pm

Yes seen it before. Bit surprised at the humble ECL80 holder though. Normally higher power valves could cause this but I suppose the pulse voltages could have been a lot higher than the DC voltages. We always used to view these holders with suspicion for intermittent flickering, crackles and things like that.....changed many of them.

They might be low quality but they've done pretty well to last this long....

21st Feb 2021, 5:21 pm	#3
Sideband Dekatron Join Date: Oct 2003 Location: Croydon, Surrey, UK. Posts: 7,580	Re: Self Igniting Valve Holder! Yes seen it before. Bit surprised at the humble ECL80 holder though. Normally higher power valves could cause this but I suppose the pulse voltages could have been a lot higher than the DC voltages. We always used to view these holders with suspicion for intermittent flickering, crackles and things like that.....changed many of them. They might be low quality but they've done pretty well to last this long.... __________________ There are lots of brilliant keyboard players and then there is Rick Wakeman.....