Age is no barrier to learning and doing the job. With the service manual you can do anything an older person could. Maybe some help from a relation, Mum, Dad brothers, and the like would be useful.
By all means put up pictures but they'll only be ones of areas you've examined and I have no reason to double check your work.
My theory is the cable to the screen is usually a short one and might have been jolted loose in its clip at the back of the screen so it's well worth a look.