[mickash]

I found a 1980/90s radio cassette player dumped in bushes a couple of years ago. It was late summer and the machine was mostly covered by fallen leaves so must have been there since at least before the previous autumn, possibly longer.
Inside the cabinet was home to various insects, spiders and slugs.
The mains transformer had turned into a block of rust and the cassette mechanism was heavily corroded.
I washed the radio chassis in warm soapy water, rinsed it and let it dry for a few days on top of the hot water tank before applying power from a bench PSU.
The radio actually worked and sounded quite good even though the speaker cones had partially disintegrated.
Your Nordmende does stand a good chance of playing again even if it looks a bit bedraggled. It's certainly worth a try. Good luck!

Michael.