Re: Choosing the right replacement cap

Thomas Dodge

I am not sure if I am doing this the correct way. I have three Tektronix
scopes. I have a Tektronix 533 scope that there is no trace. I have a
Tektronix 7704A, and the intensity is very very bright, and the
Time/Division switch has no effect. I also have a Tektronix 684A that I
bought from a surplus place, and had been on the shelf for a long time.
When I first brought it home and plugged it in, it didn't do anything, so I
turned it off and on again. After a while, it decided to work, and went
through the self test, and it was fine. I turned it off again, and then on
again, and it was still ok. I just turned it on again some months later,
and now it has no display on the screen at all. Usually when it was powered
on, the front panel lights will come on and start to initialize, but it is
not doing that now. Can anyone help with this? This is really a great scope
and the best one I have. Any help with this is appreciated. I did read
somewhere that it might need a chip replacement, but not sure. Thanks very
Tom Dodge

On Tue, Nov 24, 2020 at 5:58 PM Dave Peterson via <davidpinsf=> wrote:

What parameters besides capacitance, voltage, and temperature are
appropriate for replacement capacitor selection?

I guess configuration and size, of course. What fits.

This is the typical C1419 for a 465 scope. Just did an online search and
am overwhelmed by the number of varieties.

Are there most reliable, quality, trusted brands? Are there some to be
sure to stay away from? How to choose!?


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