Author Topic: How I fixed my WMR868 Rain Guage  (Read 2553 times)

0 Members and 1 Guest are viewing this topic.

Offline va3mw

  • Member
  • *
  • Posts: 36
How I fixed my WMR868 Rain Guage
« on: August 19, 2016, 03:30:42 PM »
First, let me say I will never buy another OS weather station.  I have had so many problems over the years.

Lately, my rain gauge worked great.... as long as it wasn't raining. 

It would then start to rain, work for a bit and die.   After a few dry weeks, it would start to work again (after I did a re-acquire on the base station).  Not good for a station that I don't see for months on end.

The fix was were the wires are soldered on the circuit board in the actual rain gauge.  Those wires are covered with silicon sealant.  And, that is the problem.  Over time, the sealant shrinks and pulls away from the wires.   This allows water to seep underneath the sealant and that causes your failure.

The fix is to remove the sealant (easy to do) and then just waterproof the wires with either nothing or some candle wax.  That is the fix.  It does not have to be complicated.  Silicon Sealant is the curse.  (there are better ways to waterproof things).

100mm of rain later, it is working fine.

Mike va3mw

Offline CW2274

  • Forecaster
  • *****
  • Posts: 3985
    • Conditions @ CW2274
Re: How I fixed my WMR868 Rain Guage
« Reply #1 on: August 19, 2016, 03:34:11 PM »
Lately, my rain gauge worked great.... as long as it wasn't raining. 
:lol:

Online DoctorKnow

  • Forecaster
  • *****
  • Posts: 1363
Re: How I fixed my WMR868 Rain Guage
« Reply #2 on: August 20, 2016, 08:32:01 AM »
If you have had it for "years", then that isn't too bad. Mine is brand new and works great.


Offline va3mw

  • Member
  • *
  • Posts: 36
Re: How I fixed my WMR868 Rain Guage
« Reply #3 on: August 20, 2016, 09:26:59 AM »
The real problem is the radio in the transmitters and receiver is not very reliable. As a radio guy using the right tools I guy see that the radio frequencies drifts all over the place.

Mike

Offline Greg_M

  • Senior Contributor
  • ****
  • Posts: 210
    • Hood Canal Webcam
Re: How I fixed my WMR868 Rain Guage
« Reply #4 on: April 01, 2017, 11:40:55 AM »
Thanks for the tip.
I took my rain gauge down and was able to get it going again based on your instructions.
Now if it will just las another 6 mos.

Thanks!
The other Greg....
W9WD

Offline Greg_M

  • Senior Contributor
  • ****
  • Posts: 210
    • Hood Canal Webcam
Re: How I fixed my WMR868 Rain Guage
« Reply #5 on: January 18, 2018, 03:37:23 PM »
Well it did not last and conked out again.
I just bought my 4th RGR968 rain gauge today (lucky find on ebay......again).

Why do I do this to myself?
This summer I get to switch to my Davis unit in NM and bid Oregon Scientific farewell forever.
The other Greg....
W9WD

Offline Greg_M

  • Senior Contributor
  • ****
  • Posts: 210
    • Hood Canal Webcam
Chinese solder ?
« Reply #6 on: January 20, 2018, 11:01:58 AM »
I've tried to reconnect wires to the pc boards in OS devices and always had an impossible time with it.
The solder just does NOT want to melt and flow. I have a good solder station it just does not seem to act like....solder.

Anyone know what I am talking about? Is it a special formulation by the Chinese?
Any tricks to making it act right?
The other Greg....
W9WD

Offline SLOweather

  • Administrator
  • Forecaster
  • *****
  • Posts: 3437
    • http://www.sloweather.com
Re: How I fixed my WMR868 Rain Guage
« Reply #7 on: January 20, 2018, 11:59:43 AM »
You may be used to tin/lead solder, while they may be using ROHS lead free solder. It can act the way you describe.

First of all, ensure that there is no clear coating on the solder. Then, try getting a blob of tin/lead solder on the iron tip and see if that helps. If it's hot enough to melt the Chinese solder, the tin/lead solder should alloy with it and make it easier to work.

Offline Greg_M

  • Senior Contributor
  • ****
  • Posts: 210
    • Hood Canal Webcam
Re: How I fixed my WMR868 Rain Guage
« Reply #8 on: January 20, 2018, 12:04:53 PM »
I'll try that.
I've been watching a few videos on the net about fixing phones and they always dob some rosin flux on the connection before they start.
The other Greg....
W9WD

Offline Greg_M

  • Senior Contributor
  • ****
  • Posts: 210
    • Hood Canal Webcam
Re: How I fixed my WMR868 Rain Guage
« Reply #9 on: January 20, 2018, 04:29:34 PM »
OS has the worst engineers on the planet.

The wires running from the "solar collectors" to the battery charger had rotted off.
They really must not have planned for this to be outdoors.

Oddly the anemometer is the original unit.....the only original unit.
The other Greg....
W9WD

Offline Greg_M

  • Senior Contributor
  • ****
  • Posts: 210
    • Hood Canal Webcam
Re: How I fixed my WMR868 Rain Guage
« Reply #10 on: January 21, 2018, 11:49:57 AM »
It looks like my patch job is working. At least my WMR968 reading is changing.
When I get the new one from Ebay I'm going to get a can of that Flex Seal stuff and cover everything with it before I put it up.
The other Greg....
W9WD

Offline Greg_M

  • Senior Contributor
  • ****
  • Posts: 210
    • Hood Canal Webcam
Re: How I fixed my WMR868 Rain Guage
« Reply #11 on: February 28, 2018, 11:33:46 AM »
It died again
The other Greg....
W9WD