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Hi @VWatchie - I have model of this Mondaine quartz watch in my collection, just a smaller size. I bought it many years ago, new. I wonder if the crystal on your watch is original? My original crystal was entirely flat. I scratched it at one stage and replaced it. There is a dealer located in the UK who sells replacement crystals for Mondaine on the big E - I bought mine from him. If you PM me, I’m happy to forward the listing details - he may keep different sizes for the Mondaine range?. The replacement he sent to me was a perfect replacement for the original. On a side note, the Ronda movement in these is very easy and fun to work on. They’re also very cheap to replace. I learnt a lot about the big date complication when the smaller date wheel spring mechanism malfunctioned and the date changing stopped. I stripped down the movement and it went back together very smoothly and continues to work perfectly. I like the streamlined aesthetic of the Mondiane line. I also have one of their big date mechanical movements which runs on an SW200-1. The crystal on that is also perfectly flat, btw. Cheers, John
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By watchweasol · Posted
I have a DIY version, it’s a voice coil from a 300mb disc drive and a vdu transformer , when you put the tweezers in they vibrate like a tuning fork and come out clean. Could get an engine block in. -
the arbor square out of place and mainspring thickness/height is what I would double check on this model....
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By RichardHarris123 · Posted
For larger or longer components I have a home made demagnetiser, a old central heating pump with the rotor removed, works well.
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