<div dir="auto"><div>Hi<div dir="auto">I don't know about this device but the MF4770n that i have has either an internal battery or capacitor that is charged when it is switched on and holds the setup for a month or so. Maybe yours is the same and is failing.</div><div dir="auto"><br></div><div dir="auto">Cheers, </div><div dir="auto">Ralph</div><br><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Nov 25, 2025, 06:01 Dr Rainer Woitok <<a href="mailto:rainer.woitok@gmail.com">rainer.woitok@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Greetings,<br>
<br>
after a few days of not using our scanner I switched it on yesterday,<br>
but it failed to connect to our WiFi until I again set the pass phrase.<br>
Today though, it did connect after powering up.<br>
<br>
Does anybody out there know what kind of storage holds this pass phrase<br>
and whether or not some coin cell is involved which may have drained?<br>
Searching the manual for "coin" and "cell" did not turn up anything, but<br>
this could just mean that replacing the coin cell requires some screw<br>
drivers and thus is not as straight forward as replacing an ink cart-<br>
ridge.<br>
<br>
Any hints welcome :-)<br>
<br>
Sincerely,<br>
Rainer<br>
<br>
</blockquote></div></div></div>