41CX locks up when eXEQuting any program

[quantalume]

(12-22-2015 12:01 PM)Alex Souza Wrote:  Hi everybody

The 41cx is working since yesterday but I don't know if it will tomorrow.I won't disassemble it as long as it continues to work

Usually, when this sort of thing happens, it's due to intermittent contacts between the batteries and spring terminals, between the batteries and flex strip, between the flex strip and main PCB, or, in the case of a fullnut, between the CPU and main boards. You need to make sure that all contact areas are clean, the screws are reasonably tight, the screw posts aren't broken, and the plastic or foam "springs" between the PCB connection points aren't "collapsed." Also, I've seen battery springs that look fine but actually have a surface layer of oxidation that prevents them making proper electrical contact.