Blinking picture I wanted to say thank you!! Years later and this forum is still helping!! Sound was coming thru the tv but the picture blinked every second!! My husband was ready to throw our tv in the trash... But because of this forum this buys us a little more time. Turning the knobs totally worked!!!!

I tried this and it Totally worked! I am very happy that I don't have to buy another TV and I can keep on enjoying this fine product for the duration. Thank you so much.

We have a Sony Trinitron KV-27S22 and the picture keeps blinking on and off. We read online to turn the screen knob slightly after opening the tv up, but we can't find the knob. Some people said their tv had 2 phillips head screws instead of a knob, but ours has 3. Which one do we turn or is the screen "knob" something else entirely?

Hi all, I have one trick for solve this problem, the first is your picture tube maybe at this time is bad, Sony use a special circuit called "IK" you can bypass the IK using only 3 diodes 1n4148, the diodes can be purchase in www.jameco.com for $0.30 each you only need to cut the trace in the CRT board which said IK and conect the anode of the each diode in the Jungle IC in the pins called RGB, put together the 3 catoth and conect the catoth in the pin which said IK in the Jungle IC, and you can use your TV for several years. At this time maybe you dont understand all that I said, but if someone wants a circuit diagram for bypass the IK feel free for email me, I send you the diagram,and short explain how the IK works. I hope this info will be help. Saludos from Costa Rica the rain forrest country.

TV plays very good but it blinks

My tv is about 8 years old and the blinking has gotten worse over the last 6 months, I found this forum and this morning I fixed it! I'm so glad that I don't have to buy a new tv.

i have a sony kv 32 s15 manufactured in august 1994. took the back off. could only find one knob, which was unmarked. obviously the focus because when i turned it, things got blurry. can't find the one for the screen/picture.

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

your tv is too old buy a new xbr

We had the same problem. 1995 25 inch Sony bought second hand a year ago from a friend. The blinking problem started some time back, first on warmup, then got progessively worse to the point it was out and blinking on every few seconds. Thanks to everyone who posted, ours is working now. On our tv, the adjustment is on the circuitboard on the back of the picture tube. The knob faces toward the front of the tv. so if you look at the circuitboard from the front side, the knob is at the lower right. The sharpness knob is on the chassis and easily accessed. I turned the knob on the circuitboad a bit clockwise, nothing. We thought we were just out of luck, but when I turned it ALL THE WAY COUNTERCLOCKWISE my girlfriend suddenly shouted "It's working!" Assuming that the pot is typical clockwise up, the problem may lie there. Our set has a big hole in the side where it was bumped when moving and was really dusty inside, so I suspect the pot may the true culprit. And dust. So try moving the pot with someone watching, turn it back and forth and see what happens. We are good for now.