I run a start up pc repair business.

I just had a customer give me their laptop for repair. Did a windows full reset and upgrade the hdd to an ssd. Customer is happy.

Comes back with second separate laptop complaint screen doesn’t work after dog sat on it. Now after a good old power cycle it boots up through bios screen. Display is fine and then goes black. I hook it up to an external monitor. All is fine. I then notice I very dark and vague image on the laptops screen.

Low and behold the brightness is just turned down.

Question is do I still charge him my flat fee or do I just let him have it back free of charge as a good will.

I recognise the pros of both options. At the end of the day he came to me as an expected professional expert and I charge my time but then I can’t shake the feeling I’m taking advantage though that might be my anxiety talking.

Or do I just let him have it back free of charge and hope he spreads good word around.