To those in NY

[Merlin Zener]

Plinio Andres Barraza wrote:
> 
> A long time ago I posted questions on how to fix my broken scope, and I
> wanted to thank all of you who sent helpfull replies.  Sadly, I don't
> think I am ready for this one.  I think I have high voltage, but still no
> display on the screen.  Also, I see no warm light coming from the tube's
> base (I've noticed this glow on other cathode ray tubes and I
> assumed it was the heating elements).  Maybe I need a new tube on
> for my scope... I've decided to go have it fixed, so the question
> is, who out there (living in the New York Metropolitan area) can recomend
> the right place to take my Tenma)?  Or should I ship it somewhere?

If you suspect no heater, there's two ways to proceed: disconnect
the neck connector and measure for a near short across the
heater pins, or run it up and look for around 6V or so across
them. An open heater means a new tube; no heater volts means
some more tracing is called for...


-- 
Merlin Zener                            mailto:merlin at ion.com.au
Piano and Synthesizer               voice: (+61) (0) 418 779 594
Gold Coast, Australia              http://www.ion.com.au/~merlin

"No-one ever went blind from looking on the bright side of life"