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Old 2nd Nov 2017, 3:24 pm   #11
dave cox
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Join Date: Jan 2009
Location: Bristol, UK.
Posts: 2,059
Default Re: looking for help please with 1964 Trio W-41 stereo valve amp

10V seems a bit on the low side to make the heater glow nicely ?

If you see 10V at the mid point of the heater chain then one or both of the output stages must be under biased.

dc
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