Welcome to our forum.
Stuart, why are you looking to replace your 3-year-young Marquis?
Are you looking for a buyer?
... as an industry professional I feel I need to get a new one every 4 years.
I've been reading through several spa forums for quite some time now and have come across a handful of postings about D1 electronic issues involving the conrtol panel.
Can you email me with the info you found?
You can't believe the offers I've had! I should go into the used Marquis business! No it has a home already.