Quote:
Originally Posted by merlinmaxwell
Why? Most valves are fine … With a meter any dodgy valves will be obvious, if there are any. I have only had one properly dud valve in all my restorations.
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I'd agree, valve faults are rare in radios, and in-circuit measurements will reveal if there is a problem.
Just treat each valve as another circuit component, albeit one which is less likely to be faulty (which means you'd suspect other items ahead of the valve).