I am down to one alarm transponder key fob thingy for my disco ser 1. (The squeaker was kind enough to drop the other one in some orange juice). I have no doubt that LR will demand some astronimical sum for a new one, but are there any alternatives short of redoing half the electrics?
There is very little in a key fob that would be damaged by orange juice. The most likely component is the switch that the button pushes on.or possibly the battery contacts.
As a first port of call try washing it out with a plastic friendly solvent such as iso propyl alcohol, or perhaps even distilled water. When dry try a new battery and see what happens. If the led does not light when you press the button it may well be the switch.
It used to make a spectacular mess of a keyboard PCB back when I repaired such things in the 70s. Coffee we could just clean and it all unstuck but orange juice or coke was look, laugh, bin.
Yes, but keyboards are mostly switches, a key fob will have one or two switches, which can usually be replaced fairly easily, the remaining components are sealed and the juice will have no effect internally. Once the sticky residue is removed things will most likely return to normal, or at worst the switches will need to be replaced.
Switches, depending on the exact design, can be sourced from suppliers such as RS, Maplin and CPC.
As the contaminate was water based water is your best bet. Strip it apart as much as you can, the wash with lots of clean water (tap water is fine) with a bit of gentle agitation from an old tooth brush.
Dry the bits as best you can with something absorbent, kitchen roll or old T shirt. Then put them somewhere warm for 24 for 48 hrs (airing cupboard near your boiler). Reassemble and test.
This works as an instant treatment but once anything has been left a while it's less effective. Even more so with corrosive things like OJ, Coke or sea water, you can never really clean 'em and after a while corrosion gets the upper hand.
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