2a3 valve strange behaviour?
hi,
one of my 2A3C valves is displaying strange behaviour:
last night I was sat quiet with the amp switched on. All of a sudden, a 2A3 valve went really bright, there was a slight 'pop' from the left speaker and a sound vibration from the amp like a quiet hum.
I switched it off and left it until today, this afternoon it was fine again!
Anyone actually know what this means/indicates please?
cheers!
John Wood 6L6 Valve Amp, with:
6L6GC Russian Original (no logo) Output Tubes 4x, supplied by J.Wood.
ECC81 Mullard NOS Input Tubes 2x
12AU7 (ECC82) Brimar NOS Input Tubes 2x
Wilson Benesch Actor Loudspeakers.
REL Stampede Subwoofer.
Cary Audio 100t Dac.
M2Tech Hi-Face 2 RCA USB to S/PDIF (co-axial) converter.
HP Pavilion G6 - 2382sa D0Y14EA#ABU + "The Teddy" 19/3 - 19V 3.5A LPSU.
The Missing Link Ultra-Pure System ~ EPS-100 ~Audiophile Silver Un-switched Double Wall Socket +
APC ‘SurgeArrest’ Surge protector - PM1W-UK (Schneider), + AG500P Power Inspired mains – ‘pure sine wave’ re-generator.
Sennheiser HD 558 headset.