I have 5 Deco XE75s.  Recently the main one got replaced under waranty.  Since then I have had to reset all of the others to get them to reconnect.  I was able to sucessfully reset and reconnect all but one of them.  This one stays solid yellow no matter what.  If i push and hold the reset button nothing changes.  I held it for one min and got it to flash purple for a second but then went right back solid yellow.  Its been on and plugged in for 3 days solid yellow.  It is wired for backhaul if that matters.  Is this one dead too or is there something else i need to do to get it to reset??  Thanks for any help!