[Test-Equipment] TEK 494AP Gain problems

[Alan Melia]

Hi Bill I have one of these here but with a major PSU  problem ....I can 
even think of RF problems
:-((

At the risk of "insulting" your technical skill :-))  I must say that, being 
kit of "a certain age" it feels awfully like a sort of power supply problem 
.......probably not the main supply itself but maybe an electrolytic 
decoupler or two. It is these sort of symptom I have seen in receivers where 
the emitter decoupler is "dry" leading to negative feedback on that stage 
(lower gain) this slowly recovers some capacitance after power is applied, 
and the gain comes back. Tacking a new cap across the installed one is a 
quick way of checking.

That may be totally off beam but it may trigger someone to respond telling 
me I am totally wrong ang giving you the correct diagnosis :-))  I dont mind 
sticking my neck out if it helps in any way.

Good Luck with it.
and Best Wishes for the Holiday Season
Alan
G3NYK



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