Solar panel advice

[Dukeylabdog#1]

Hi l'm after a bit of advice, regarding my Glass Solar panel. I've had a an issue with the solar contoller, which l've now changed. I've also checked to see if power is coming from the panel to the controller, which indicates there is (not sure on the amps through). However on checking the panel itself, l've noticed there's water underneath a plastic film..
Can you remove this plastic film or will removing it destory the solar panel.
Also can this film be replaced
Many thanks for any advice

 

[WelshGas]

Hi l'm after a bit of advice, regarding my Glass Solar panel. I've had a an issue with the solar contoller, which l've now changed. I've also checked to see if power is coming from the panel to the controller, which indicates there is (not sure on the amps through). However on checking the panel itself, l've noticed there's water underneath a plastic film..
Can you remove this plastic film or will removing it destory the solar panel.
Also can this film be replaced
Many thanks for any advice

View attachment 143599

How old is the Panel?