[sdiy] Test Equipment Repair

[harrybissell]

So... what you do is get the service manual first (if possible) and look at
what resistors are burnt.

Scopes are a pain in the @ss to service because they are really tight inside...
often they were cutting edge technology of their day.  OTOH they are usually
built to
BE serviced, not thrown away.

If the tube is good (liiks like it) and you have vertical amps I'd probably look
into
fixing it

Hell, I fixed MY H-P  (twice now :^)

H^) harry

Tom Arnold wrote:

> So, I pulled out my HP and had a poke at it.  No sweep.  Beam finder pulls
> up the beam and I get vertical if I hook channel A or B to the calibration
> point and hold down beam finder.  So pop the lid off and sure'nuff some
> burned reistors on a board hanging off the sweep control.
>
> So.  Question 1, this is an HP 1722A. 275mhz.   I see that a 1722B sold on
> evilbay for $112.  Is it gonna be worth sinking a few hundred into to get it
> fixed and calibrated or should I hunt down a good Tek unstead.
>
> Question 2, anyone know a good place in the bay area to get test equipment
> repaired? ( SF Bay Area ).
>
> I expect, if the repair is under $300 or so, that my answer to #1 is "Fix
> it" as anything cheaper will probably be As Is and I could get something as
> bad or worse...
>
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