Last time it was the power control unit and so I suspected it was the same problem in a defective new unit. However, last time the problem was displayed on my joystick hand control indicator as a sequence of flashing lights. No coded message this time around.
Repair person came to my home and examined the chair to confirm the problem, then measured the electrical output from the recently replaced power control/distribution unit. It seemed the controller was not the problem, rather one of the motor's internal brakes seemed to stick or not release properly. Off to the shop it went.
So, after a week I call the shop for an update. I'm told they will have a Permobil representative come down (?) or consult with them (this was unclear) on the following Monday.
Monday came yet I received no update; I have patience so I wait. Wednesday I call again and leave message on voicemail - nothing, Thursday I call again and leave message. Employee calls to inform me that the Service Coordinator has had a personal issue to deal with and will call Friday. Motion Specialties has always treated me well as had the Service Coordinator so I understand. They will call on Friday.
Today, Friday arrives and my favourite service tech shows up at my door. He has delivered my chair.
Bad News First: The problem was evident at the shop but somehow corrected itself (sticky brake released?) and they were unable to reproduce the problem after trying various test runs.
Service technician tells me that they contacted Permobil Service Specialists in their U.S. Tennessee plant and they were anything but helpful. The needed the coded sequence of lights to diagnose the problem, however, as I previously mentioned, there was no coded sequence of lights. If there was, the problem would be evident to our own service technicians without having to place an international call. My service technicians impression was that Permobil U.S. also did not care about problems which occur after the sale is made.
So I now have my Permobil M300 powerchair back however some hidden problem remains with no way of telling when it may again repair. That leaves me with little confidence in using this chair.
If it should happen again, I suppose the motor would have to be exchanged for a new one, assuming it happens while it is still under warranty.
Good News: If there is any good news associated with my disastrous Permobil M300, it is that there is no charge at this time. Stay tuned...