[DNA 400C "check battery"]

Unfortunately more than a year 😢

[DNA 400C "check battery"]

Hello everyone,
after using my hog dna400 without problems for a while, one morning by putting the batteries, impossible to make it work, I have the message "check battery", I did a reinitialization via escribe, but still the same problem.
I changed battery without success.
Thank you in advance for your help.