Same faults as mine Fred. You'll need a Torx T5, a T6 and a very small Phillips to open it up.
You'll undo the 510 first and pull it up with attached squonk tube. Take a good look at the way the power cables are soldered to the 510 (and cable orientation) as you pull it out because if you're not careful it'll be very hard to jam it back in. Then there are the Torx screws on the bottom of the mod and phillips in the battery sled. The ribbon cable and multipin connector to the screen is super fragile too and just overall difficult to tinker with. Good luck ! (apologies if this is grandma/ suck eggs stuff)
EDIT: also look out for juice behind the battery sled. Mine had some evry time I opened it up
Nah mate i'm not even going to bother opening this thing. I don't think anything unplugged in there...if its that stuffed inside. It went on and off again this morning. Still adjusts. That to me is a sign of the board itself.
I'll just use it as long I can....then smash it on the concrete outside.
Don't think I want to go through the long wait for another one..just so the same problem happens again. This is a typical low quality chinese designed/manufactured device.
nother lesson learnt.