John when I bought my boat there where several spare screens on board one of these days I will swap out a couple.
Yes one of my projects is to replace my TVs they both turn on all by themselves. I called Toshiba and they said they were not worth fixing.
I spent the day in my engine room, I changed the zincs, changed the impellers and cover plates (they don't drip anymore) and topped off the batteries.
I also change the antifreeze radiator caps for the second time due to a drip, what I discovered is this is not the problem there are small cracks on the filler neck on top of the tank. I'm thinking I will try JB weld. It is an area that is easy to access so cleaning and prepping should be easy. It has to hold about 13lbs anything more will blow into the reservoir tank. If the JB weld doesn't work I will drain and remove the tanks bring them to a radiator shop and have them welded should not be a big deal just a pain to remove and reinstall. This is a small leak that I have had since I bought the boat but in the process of trying to fix it I made it worse so it's time to do something. I want to try this tomorrow so it has time to dry in time for me to take the boat on Thursday to get the upholstery installed.