THANK YOU! 36 sony trinitron circa 1999 bought 5years ago for $50, was gonna pitch it (well ok, at 235 lbs. might have to use more force to pitch it in the dumpster, lol) on my tv, after you remove the back cover and are looking at the tv's backside my knobs were actually 2 black plastic phillips scews on the very bottom right directly adjacent and right of the board with the rca, s video and coax inputs. the top one was focus, the bottom was screen; very slightly adjusted screen clockwise

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