I had a hunt through my spare valves and other radios but I don't have another DK91, the nearest I have is a DK96 (why oh why did I sell most of my battery portables
)
I can't pick it up on another radio either (TR82).
What's all the more annoying is it was working fine at one stage, yet I can't find any faults with the work I've done to the set. Remember, it has been working now too when it started motorboating although I can't get it to do that anymore.
The resistor across the smoothers measures 2.9k so well within tolerance.
I'm guessing then it's either the DK91 that's given up or the rectifier getting rather tired thus making the set not function correctly?
Josh.