@lennartu the answer from @justgilles is absolutely right. Your board is 100% corroded. This will almost certainly have caused shortcircuits and failed components. If you decide you would like to give a repair a try, let us know so we can assist you with further steps. WE would need more pictures and the exact make and model where this board come out off. Ultimately this is most likely a situation where it is just not possible to do a repair but a replacement would be advisable.
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@lennartu the answer from @justgilles is absolutely right. Your board is 100% corroded (yes, it's so fried it is Toast). This will almost certainly have caused shortcircuits and failed components. If you decide you would like to give a repair a try, let us know so we can assist you with further steps. WE would need more pictures and the exact make and model where this board come out off. Ultimately this is most likely a situation where it is just not possible to do a repair but a replacement would be advisable.
@lennartu the answer from @justgilles is absolutely right. Your board is 100% corroded. This will almost certainly have caused shortcircuits and failed components. If you decide you would like to give a repair a try, let us know so we can assist you with further steps. WE would need more pictures and the exact make and model where this board come out off. Ultimately this is most likely a situation where it is just not possible to do a repair but a replacement would be advisable.