not really weatherproof "Toys"

I bought this pump as early as 2010, when I had just a mini-mini pond (15 cm water depth) ...
For this pump was well suited, because if we are honest, then we enjoy a small
Water feature mostly when the sun shines ;-)

What have written other buyers, I can only confirm. In cloudy sky the pump is stopped!
It has no battery and reacts to by clouds with on-off-on-off ...

Unfortunately, the pump survived only one season, and that's the main reason why I write here today.

Yesterday I tried to understand why she has given up the ghost, and they have "broken down".
Conclusion: The pump itself runs at a 5V power supply further perfect. But from the solar module comes in the form of stone
no longer enough "juice" for the pump.

I then tried to open this "stone". This was only a saw, because the "stone" is made of GRP
and is not to be opened are provided for.

Inside I found a greater amount of damp earth and a totally corroded board with some electronic components.

What happened?

The "stone" has to derive at the bottom of a small hole (3mm?), Which is probably meant to moisture.
With me but ants are apparently reached this way in the "stone". As the stone in the sun
heated strongly, they were well inside the ideal conditions for the young ...

The fact is that about 8 V continue to come from the solar panel, but due to a defective electronics nothing more
arrives at the socket.

For a "weatherproof" module should have been pouring my opinion the board in resin. Here, the manufacturer
saved!