I acquired a 27" Sanyo CRT TV (chassis - G3Y27560, model AVM-2756) to run a SNES on.
There are some convergence issues at the corners that aren’t a big problem at the moment, but the vertical size is too tall causing clipping of the top and bottom of the image. I was hoping to see if I can adjust the vertical size in the service menu, however once I’ve accessed the service menu, I cannot change to any menu items with the up and down (channel) buttons. I can only change the value of the first menu item with the + and - volume buttons. Any ideas as to what I’m doing wrong?
If they’re anything like Sony service menus the options are controlled by the numbers on the remote not the navigation buttons, so for instance 1 and 4 might scroll through the options 0 will act as confirm and then there’s often two buttons that save to memory.
Unfortunately the only buttons that affect anything while in service mode are the volume + and -, menu which exits service menu, and power which turns the set off.
It’s interesting that I could not get into the service menu when the input “TV”, it didn’t work when the input was set to “Video” for the component inputs.
OH, good find! This is definitely a closer model… I’m a complete novice, but am interested in learning more. I see what you are saying about adjusting the vertical size on “VR501”. I assume that means variable resistor 501? or am I totally making stuff up? : )
I’ll have a closer look at the scematic later to see if I can make more sense of it. Hopefully there’s just a POT that I can adjust.
I should probably mention that as the TV warms up the vertical size does shrink down a bit but there is still some cropping. Would that be a sign of a capacitor or resistor going out?
Agreed… I’m just hoping to make it a little more usable for now until I can have a professional look at it, or I learn enough to do a cap kit some time down the road.
