Issue with a 27" Sony from 1991

[zeno]

Go to the hoz drive transformer (HDT) remove the solder & start
fresh. Go over the rest like you did before. Dont forget to do around
the pin amp & pin transformer. Also any metal rails that act as grounds.
Only width problems I ever had on this vintage Sony was the HDT
& a few pin problems.
If that dont do it post a few chassis photos & one of us can
help you I am sure.

73 Zeno