jbrepogmailcom
commented
4 years ago The power regulator was marked L375, which I think is also SPX3819. It is visibly burned at Vin pin. How it is possible it is burned when connected to car battery with 12-14V? The rest of electronics is burned too, unfortunately.
Hello, according to specs there is SPX3819 power stabilizer at the voltage input, also the filter capacitor is rated at 16V. When I connected the node to car battery 12V it seems that something is burned. There is no 3.3V, so I assume that SPX3819 is dead.
Do you have any idea why please? Thanks, Jan