If a new one ends up being expensive, you can find everything you need to make a new board at radio shack - even the new board. If you get really lucky and the board is still good (you could verify by testing it once you've desoldered and removed all the old LED's) all you would have to do is replace the LED's in the same board. Good luck.

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1982 Mercedes-Benz 300CD
1982 Mercedes-Benz 240D - stick