chrismarseille wrote:I answer myself partialy since I succeeded in making it work :)
so this module doesn't light up when powered, you need to push the button to see something :)
I don't know what was wrong, I tested maybe too fast the trimmer the first time...this time I desolded it, test it on capacitance meter (about 18pf), turn the brass screw to be sure it was not stuck by dust or batterie leak stains and ....miracle...now works :)
If anyone knows the normal current for this watch, I am still interested :)
The Frontier specifications for that module was 3uA with no buttons pressed, no display on, only the oscillator running. Every module was checked at least twice prior to shipment. Anything over 3uA was rejected. Some rejects drawing 3-7uA were sold to "NO Name" watch manufactures at reduced prices. Anything over 7uA were trashed. Believe me, there were thousands of modules which went to the Orange County California landfills in the '70's. The trimmer were normally 5-28pf or 5-35pf in value.