My Sunvic 207xls display panel is gone blank?

My sunvic 207xls display panel has gone blank however, the heating is working as the radiators are hot. Also the light on the panel is illuminated but the screen is totally blank!
I tried pressing the reset buttom but nothing is coming up on the screen.
Rang the company but the technical guy said I should replace the panel as he didn't know what to do further?

Mrs Shah
January 2011