This thread seems forgotten:
Also my thread in March (last year) same thing.
Precis: Stuff the electronics in an eyeglass case: Dump the heavy lock.
The eyeglass case slides neatly to the left and back.
The microswitches: (Some unhelpful sod trying for a hole-in-one said to remove them.......so my other thread died.
Hold the microswitches with a screwed plate (no tape) but they may be U/S
so:
OR slice off the tops-with-the-tits (careful!) of the microswitches (which according to the German Manufacturers (though made in the USA) are unofficially a "problem".
Be sure the "hole" connector (#2 with magnifier) is disconnected. It was very close to the center connector.
Now solder the center connector #3 to the plunger connector #1. Job done, but keep the heat away from the board so solder fast and allow to cool before soldering the next one.
Other possible fail is in the 2 micron relays. probably easy to deal with provided you understand that......
The Brown wire is Positive to lock and Negative to unlock or vise versa.
Further: the board MUST be free of grease. Grease can allow tracking: Use an appropriate circuit board cleaner....but keep it off the relays which are supposed to be sealed: "supposed".
OK fellahs...who'se the next biggie to take pot shots at an old Fritz engineer
who dislikes wars...or insults...or b/s or trolls...so comes back seldom.
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