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Vantage Vue - crazy temp/humidity!

Discussion specific to Davis weather stations
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DanielF
Posts: 184
Joined: Tue 30 Dec 2008 12:53 pm
Weather Station: Davis Vantage Vue, serial logger
Operating System: Win10Pro64
Location: Gerroa, NSW, Australia

Re: Vantage Vue - crazy temp/humidity!

Post by DanielF »

What I should mention is that, not long before my temp/humidity conniptions, I had opened the Vantage Vue ISS to try to fix a prior problem - regular low battery warnings, and 'flat-lining' of various readings each night.

I found that the main electronics 'block' (encapsulated) was connected to various sensors, and the battery, via spring-loaded gold-plated contacts that pressed against a protrusion of the main PCB at the bottom of the electronics block. Those contacts, and the gold-plated fingers at the bottom edge of the PCB had been liberally smeared with silicone grease (at the factory).

My theory at the time (about the cause of the low-battery and flat-lining) was that some grease was between the contacts and fingers, causing high-resistance and/or intermittent contact. So I carefully removed the electronics module (or was it the contacts sub-assembly? – I can't remember) and then slid them back together again a couple of times, to allow the contacts to 'scrape' the grease away from the gold fingers.

Since then (now over a year ago) I've had not one instance of 'low-battery' or 'flat-lining'. Then the temp/humidity conniptions occurred, just for one day, then went away. So I'm suspecting that too was maybe an intermittent contact problem as the contacts and fingers settled into their 'new' relationship, over many thermal cycles.

Not a hiccup of any sort since the temp/humidity came good all by itself – I still have my brand-new sensor module in its plastic bag awaiting a 'final' failure. Fingers crossed, that will be another few years yet!

So, if you haven't already done so, I would recommend doing the same as I did, and re-mate the electronic module and its external contacts a few times to ensure clean mating surfaces.
Daniel
Gerroa ('paradise'), Australia
Gerroa weather
prodata
Posts: 317
Joined: Sat 05 Feb 2011 7:13 pm
Weather Station: VP2
Operating System: Windows - all flavours
Location: Littleport, East Cambs, UK

Re: Vantage Vue - crazy temp/humidity!

Post by prodata »

DanielF wrote:So, if you haven't already done so, I would recommend doing the same as I did, and re-mate the electronic module and its external contacts a few times to ensure clean mating surfaces.
This description only applies to the original Vue design. From v1.05 (Rev G and on) introduced by mid-2012 there are no pogo-pin plugs and the wiring harness is an all-in-one design - ie there are no PCBA sub-assemblies that are separately replaceable.
John Dann
Prodata Weather Systems
Littleport, East Cambs, UK
http://www.weatherstations.co.uk
Dewie
Posts: 4
Joined: Sun 20 Jan 2013 7:40 pm
Weather Station: Davis Vantage VUE
Operating System: Various
Location: Nova Scotia

Re: Vantage Vue - crazy temp/humidity!

Post by Dewie »

Replying to this thread as it was one I would run across when trying to search for a solution to my problem.

How I fixed my Vantage Vue temperature problem: http://www.wxforum.net/index.php?topic=24701
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