[Test-Equipment] Tektronix DC-502 Digital Multi-meter

[Dave Wood]

Most likely a power supply issue in the module.  May be AC ripple in the
ADC circuit.  Dave

On Fri, Dec 13, 2019 at 2:12 PM Ray LaRue <w4byg at att.net> wrote:

> I have the above Tek multi-meter which I have owned for many years, but
> only used sporadically.  It has developed a problem which I thought I
> might draw some wisdom or prior experience, from the group before I dive
> into it.
>
> It is mounted in a TM-504 frame which is working well with other
> modules, bu it is flashing random numbers in any position of the
> selector switch.  It does so even with the leads shorted in any setting,
> AC, DC or ohms.  Also with the input selector on internal or external.
>
> Does anyone have any experience with such that they might give a clue
> what to look for?  I have the manual.
>
> At 81 years, any assistance to shorten the troubleshoot/repair, will be
> appreciated.
> Ray, W4BYG
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