Resurrecting this thread ......
My WS2500 console has just died but as it was purchased at the start of 2004 I guess that isn't too bad ! So, I wondered if anyone was interested in making me a reasonable offer for the instruments (as a job lot) to act as spares. I have 2 standard thermometers, a battery operated thermometer which I use for grass temps, a rain gauge, anemometer and the brightness instrument. I think the latter may need a new battery.
The reason I have two thermometers is possibly the same as mentioned above. It started giving spurious readings so I replaced it. Earlier this year the same happened to its replacement. Luckily I had retained the faulty one so I charged it up and its been fine since. My theory is that moisture can sometime cause problems. I have found this happens from time to time with the grass thermometer also.