Solar panels are made with a soft backing that expands and shrinks with temperature changes. moreStep 5If the component wet leakage test fails and needs to be repaired, the component back plate is heated by an infrared radiant heating device or a hot air blower, and the surface temperature of the component back plate is not more than 80 ° C to remove the photovoltaic module back plate. A small. DuPont has launched a product it says allows for easy repair of modules. The new backsheet is simply glued to a cracked backsheet using a strong adhesive. Sealing and coating photovoltaic modules where low viscosity and self-leveling properties in combination with non-corrosive cure is required. They still output the same current as when new. From my understanding, the back sheet serves four major functions: 4.