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Step 8: Locate the damaged solder causing the K40 relay problem
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In the upper left hand corner of the circuit board you will see three solder points right next to each other. Any one of these may be bad. You need to remove the bad solder of any damaged connection, and re-solder. In the photo you will see that my K40 connection was damaged only on the right most of the 3 connections. The photo isn't great, but there was virtually no solder on this connection, and it looked dirty and almost as if it was slightly burned. The other 2 connections looked clean.
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