Humax PVR 9200T freezing picture and will not turn...

Question

Please can you advise about a problem that has just occured? The picture freezes after 30 secs from boot up and I am unable to turn off the PVR at the front switch, nor can I use the remote control either to record or to change channels etc.Humax have been 'deafening in their silence' in response to my intial enquiry to them. The PVR will be 3 soon.I did a Google search for this web page.Thanks in anticipationNigel Bennett