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Detective work in Paris

Some months ago Daniel (our French representative) complained that every morning his SR-4 crashed when turned on, when reset or restarted it worked without problem. My test unit in the UK however did not suffer from the same problem even with identical software and setup.

A visit to Paris found a bug reading the EEPROM that caused the unit to crash if it could not interface with the EEPROM there remained the problem of why it was not reading the EEPROM.

This week Daniel swapped the chip used to read and write to the EEPROM, this cured the problem, but even when the old chip was put back the problem was gone!

The moral of this story is that if you are having strange problems on old equipment (the SR-4 4 was probably 15 years old) try removing any IC's on sockets and cleaning them!