i have same problem. not sure about daisy chain powering it as i have a lack of leads currently but had it a couple of months before dc stopped working with psu previously fine(no external cause), battery power works no problem but it’s annoying to change given the 4 screw setup(not that it needs changed very often).
not really contributing any new info here but felt others might appreciate further confirmation that it’s a fault with the product. would love to hear if anyone manages to fix it and how.