Poor transformer voltage, not enough power message

Got a bit of a strange one, still using the 1st gen video doorbell pro, which is hardwired via transformer and has been working fine up until recently when somebody rings.  Everything is fine up until it's used once and it shortly goes offline after about 60 seconds and checking on the device health, it reports as poor transformer voltage and the transformer not supplying enough power.  If I unplug the transformer though for about 30 seconds and then plug it back in, it's completely fine again and stays that way until it's used again.  Was hoping to not have to completely replace it but might have to if no other option, I have had it for 5 years, thanks in advance