C4 SD connect does not load to the end

The essence of the problem is as follows – the C4 SD connect multiplexer stopped loading to the end and after the phrase “the device starts up” on the display it freezes, Accordingly, there is no connection with it. All the time it worked without batteries, tried to install them and the device did not work for long and the spring of which the batteries touch was melted to the plastic. The batteries had to be pulled out. Maybe someone faced such a problem? Which way to drip?

The Wi-Fi module has fallen off, but is present in the configuration. If everything is normal, then the am79c874vi (network card) is not reset, only replacement … if this does not help, replace the MPC5200 …

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