We use the ´160 module in our product and have quite good experience so far.
(10 machines equipped with 1 module each are operating for almost a year with high duty cycles)
Last month, one module failed without any sign of damage, abuse or whatever.
Customer told me that the machine failed "over night" - means worked the day before - but failed on turning on the next day.
Analyzing the module - everything seems pretty fine - no smell, no suspicious cap,
no sign of excess heat, halfbridge-mosfets without any cracks (...)
If I connect to 24V, the 2 voltage regulators seems to work - 5V, 12V generated, controller
has power, but no LED , no response to serial command. (serial driver, chargepump, ok)
This is why I assume that probably the microchip flash / firmware got somehow corrupted.
Is it possible to reflash that / are you intrested /does it makes sense / to send it to you for analysis ?
Is there any form of warranty which would apply in such a case ?