[pure-silver] Re: Meter woes

Quality Light Metrics in LA CA might be able to give it a great fix.
georgepmilton@xxxxxxxxxxxxxxxx 

Not DIY and will cost some but he has fixed some REALLY old meters for me
for reasonable money.

                        CHEERS!

                                    BOB

 

  _____  

From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of William Harting
Sent: Sunday, March 29, 2009 4:04 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Meter woes

 

Nicholas, you did it. As you said, they cheaped out on the rubber contacts.
Took the meter apart. Released the back by flexing the two snap-tab slot
catches, removed the back, removed the circuit board (two brass screws top
right and bottom left), cleaned the button backs and the contacts,
reassembled, and, at least for the moment, it works like a dream.

Thanks, bill

On Sat, Mar 28, 2009 at 6:09 PM, William Harting <wm.harting@xxxxxxxxx>
wrote:

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

============================================================================
=================================
To unsubscribe from this list, go to www.freelists.org and logon to your
account (the same e-mail address and password you set-up when you
subscribed,) and unsubscribe from there.

Other related posts: