Re: A reminder, a warning..
It is worth keeping an eye on sets with older NiCads in.
Nicads do seem to lose a liquid. I am currently looking at a Eddystone Post Office Noise Measuring Set 31A. This has a NiCad pack in a (nearly) sealed case.
It seems that a liquid has leaked out of the grommet where the cable comes out and corroded a hole in the case of the 25 MHz IF. This has then gone into the case and there is corrosion on the board to the extent that the bodies of some of the resistors have just fallen off as the wires have corroded.
When I got into the battery pack there was quite a lot of liquid inside. The fact that the set has stood on a shelf in the store for about 15 years may have some bearing but I am not sure!
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