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Screen jittering after H-Width adjustment.
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Question
Rowr
Hi guys, i recently picked up a LAI Fatboy.
I've rotated the screen from vertical to horizontal without issue, though after finding the edges of the screen not extending far enough out by a few inches either side some resources online led me to believe adjusting the Horizontal width pot might help.
I bought the correct plastic tooling and carefully tried to adjust a few turns back or forth. At the time it appeared to not make much difference so I turned it a few rotations back to get it about where i found it and then the screen sort of went from stable to all over the place horizontally. It also developed a bit of a horizontal jitter.
I've spent a few hours total now adjusting the various horizontal pots to try and get the screen back, and while I can adjust it to be more or less stable the jitter is persistent and the screen is now about a third too far to the left and will rarely hold horizontally for too long.
I've taken out the core and examined it and it doesn't appear broken at all, I've peeked inside the pot and can't see anything obviously wrong. There is a half circle flat piece of plastic that i assume is in there to hold the thread a bit tighter?
I'm clutching at straws a bit over what is at fault as this is my first machine and I'm struggling to find much online regarding similar issues. The way the screen went from being stable at first to going jittery makes me think perhaps a loose solder joint or something nearby when I adjusted it has gone off or something. I've checked for loose wires.
So i'm aware now that there is a jumper I would of been better of trying first to resolve the screen width issue and that I was always going to get minimal adjustment from the H size pot. So yeh feeling pretty deflated that I touched it at all now.
A few other things prior to this though things were still working ok, is that upon powering up the screen starts blurry and will gradually focus in over 15 minutes (although this might be temperature related as today being a warmer day it was clear from the outset when i powered it on. Also the vertical position pot snapped off when i first went to adjust it, it seems the legs on it were already a bit weakened although in hindsight I should of been a bit gentler.
Now i've contacted Jomac and plan to drop the chassis in as most threads I found regarding similar issues end with that conclusion and i'm too far over my head to be able to diagnose what is going on. But I was hoping if anyone has some more familiarity with what it could be that might make it a bit easier for me to either attempt to fix it instead of sending it off or at least narrow it down for when I send it in.
I believe the chassis is a nanao ms8 (26a?)
Sorry for a bit of a depressing first post, thanks for reading.
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