/vr/ - Retro Games

>>9574515
the yoke is part of the crt on the back of the tube with the deflection coils on it. sometimes the yoke of a crt will shift a little in a way that makes the picture bow at the top. i've seen it myself on two wegas in person. now, sony sets also tend to have in-depth service menus. i'd guess that you need the remote, but you can check the service manual for your model. the service menu might have an option called VCEN. i'm calling it bowing, but there's also a service menu option called VBOW which is different. if the service menu doesn't have the VCEN option or if you can't access it, you can also address the bowing by carefully adjusting the yoke by hand while the set is powered on. carefully not only because of the high voltage, but also because the neck of the tube is fragile and yokes are made of plastic which gets brittle with age. here's some videos about yoke adjustment:
https://www.youtube.com/watch?v=otwPa-nhcTg
https://www.youtube.com/watch?v=Q2IHJfvD-70
not sure if your set has the adjustment rings, check pic related under V-CENTER and V-PIN. in your case the bowing's so small that the difference might not be worth the effort anyway. up to you. i'd recommend reading the service manual if you want to do picture adjustments anyway.