Picture stays on for 3 mins, then slowly disappears

Yes it can. Sounds like you have cold solder joints on the Vertical Output IC.

i'd say your tv is unhappy.

unplug for 10 min..and see if that resets it.

Hello!

Please check the manual, troubleshooting.
Hopefully, it will help! operation Sony KV 36FV1 User Manual Page 32 of 36

Sony Trinitron TV. Worked well last evening. Now picture won't go on. When power is turned on, standby/timer red light flashes, but picture or sound does not work.

Unfortunately, the CRT (Picture Tube) is reaching its very end. Your set is not feasible to service even if the CRT would still be available from Sony or any jobbers.

I would be seriously shopping for a new TV set!

Jerry G.

I THINK YOU HAVE A PROBLEM WITH DEFLECTION - I SUGGEST TO REPAIR IT BY TECHNICIANS - THAT TV IS UNDER
WARRANTY - DELFO

Hi, IK circuit is engaging which basically means the picture tube is getting tired, the only "fix" is temporary (may get another year out of it). You have to increase the "screen control clockwise".
Remove back of set, follow large black or red wire attatched to picture tube down to the flyback transformer, mounted on flyback are two black controls, one is focus (leave it alone) the other is "screen", adjust it clockwise approx. 1/4 inch, remember that this is a high voltage circuit so use one hand in the set the other hand out of the set at all times,any questions ? e-mail me back, good luck, BMW Rider

Hallo, IC MCZ3001D is damage. Cost 30 Euro. Greatings from Germany

Tell Tail sign of a bad picture tube!! How is the color? Does the picture stay on at some point? Don

You likely have bad solder connections around the tuner area. This model has a history of problems in that area or the tuner itself.