I have a samsung tv model UN4MU6290 that was showing 0 memory available and having intermittent problems with volume control and an installed app that I was unable to update. I removed all apps except those preinstalled that we cannot delete, reset the tv, reset the smart hub and was able to recover a small amount of data. I now have one installed app on my tv (disneyplus) and HBO Max is installed on a USB drive connected to the unit. Again, I have 0 memory available. What else can I do?