[pure-silver] Re: Meter woes

Thank you sir. The meter is effectively unusable as it is, so there is not
much to lose. I'll give the cleaning a try. Meanwhile there are other
meters: I can get out the Master V, for example, which is still ticking
along.  And the Luna Pro F is good, or the Pilot, which I just took on a
drive to Texas.

-bill h

On Sat, Mar 28, 2009 at 11:21 AM, Nicholas O. Lindan <nolindan@xxxxxxxxxxxxx
> wrote:

> "William Harting" <wm.harting@xxxxxxxxx>
>
>  My Gossen Luna-Pro digital meter (not the flash model) has just about
>> stopped responding to the buttons.
>>
>
> To be expected with this meter.
>
> They cheaped-out on the keyboard contacts on the printed circuit
> board.  Rubber keyboards are only reliable with gold contacts on
> the PCB - Gossen used silk-screened conductive plastic for the
> contact.  It is possible to get the plastic contacts to work
> if capacitive sensing is used - Gossen didn't use capacitive
> sensing either.
>
> You need to take the meter apart - as I recall this is not a pleasant
> experience.  There are two slots for snap-tabs at the top back of the
> meter, you somehow need to disengage them and then pull the meter
> halves apart.
>
> Clean the back of the keyboard with 91% isopropyl and a good scrub
> with a toothbrush, ditto the circuit board.  Then clean the circuit
> board contacts with a clean pencil eraser.
>
> That will get it back into working condition for a few more years.
>
> Nicholas O. Lindan
> Cleveland Engineering Design, LLC
> Cleveland, Ohio 44121
>
>
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