[sdiy] scope sort of on the fritz

[Gordon JC Pearce]

On Tue, 22 Nov 2011 15:31:09 -0500
aankrom <aankrom at bluemarble.net> wrote:

> I have a scope that has begun to need a lot longer to warm up and give 
> me a trace. What's probably the most likely culprit? It's a 60 MHz 
> Beckman Industrial, probably 80's vintage. My guess is a cap going bad 
> in the high voltage supply...

Highly unlikely.  Capacitors rarely fail.  You're much more likely to find a high-value resistor somewhere in the brightness circuit gradually drifting higher and becoming temperature sensitive.

-- 
Gordon JC Pearce MM0YEQ <gordonjcp at gjcp.net>