Question about Sewing Machines
This issue is caused by a overheating semiconductor in the board. It may be a simple transistor or the entire chip. To locate the broken board, just follow the wires from the door switch.
If you feel confident about electronics repair, use some canned air to cool down each component, one by one, first transistors, then integrated circuits. As soon you see the shredder stops showing "door open" after cooling a specific part, you will know which one is broken.
If you have no experience about repairs, I do not recommend you to continue using or trying to fix it. Just remember; the safety features are not working properly and it is not safe to operate or play with it. Don't lose a finger just to save some bucks.
Posted on Sep 30, 2009
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Posted on Jan 02, 2017
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