Servicing an Child’s Electric Piano

Recently we were given a small toy piano. Grandmother has bought it from the flea market. It is a very common cheap toy. Somewhere during the road it has had some bumps because half of the keys did not produce any sound at all.

Open it I did.. And it revealed it’s secrets to me. A piece of circuit board was missing, actually the whole board was cut in half. Luckily I managed to find that missing piece.

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After some thoughts it was clear what to next. I inserted some cyanoacrylate and then I could go repairing those broken lines. I had to remove some coating that solder could stay in place.

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Then some soldering and it looked like this:

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When reassembly was done I recognised that it works!

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