Hey there, disassembling and cleaning with contact spray is a good way out of the issue.
But be careful, dont spray much of it on or in the display, it would cause a thin oily film…
The main problem is the water whitch stays under the heat/protect plates on the cores.
Long drying without plugged battery at moderate temperatures is recommened too… Heat is dangerous, your oven is not very precisios at so low temperatures.
Hope contact spray helps!
Greets Chris