[dglcomp]

I recently brought an Audio Technica wireless system and on inspecting the beltpack found it had some crusty batteries still fitted, upon inserting a new set it naturally did not work and required the contacts cleaning, you would have thought they'd done a final test of it before shipping and removed the batteries.

One piece of kit to always check for leaking batteries are synthesizers/keyboards. A lot of the older ones use rechargeable batteries combined with SRAM for internal storage and can be killed by a leaking battery, also some other have standard non-rechargeable batteries for the same purpose and can easily get forgotten about with the same results, although depending on the style of the battery holder usually do less internal damage when they fail.

OT but another wireless system I recently purchased confused me a bit as they had flat contacts one side of the battery compartment and spring contacts the other side despite the batteries being inserted in the usual way to make 3V, it works but for something built in Austria from a decent brand (AKG) you'd have though they would know how to design a battery comp.artment