Hi Medic,
We had a Zoll M series sent in from a client that had similar issues with Zoll - they sent it to Zoll first and they said that repair was going to cost around £1k.
They sent it to us and we checked it over and managed the repair for a fraction of the cost.
I'd be happy to get one of our enginers to take a look at it for if you want?
Regards,
