Tv showing blue screen with flyback lines sound ok

Tcon board possibly

Hello
Since there is a blue screen atleast, I don't think that the picture tube is gone. The fault may be either to its chroma IC or video output section. In both sections fault cases, this type of horizontal lines [parellel to each other at about 1 inch or so apart the entire screen] will be seen. Just check the voltages at the three cathode, ie, red, blue and green of the piclture tube. This can be measured at the picrture tube neck card. If you have through knoledge in electronics, have patience and enough tools to do the work, inform me through Fixya. Without these, you can't work on a tv, especially in Philips.
Otherwise, get it checked by any expereinced service technician. OK.

You plasma still under manufacturers warranty. Most electronic devices have one year warranty.
The failure in your TV can only be corrected by repairing it.
I would suggest to call philips and ask them to find you an authorized repair center near you to get your TV fix under their warranty.

Any set can be repaired it is the question of the cost and the availability of the parts.

The fuzzy lines with static noise is probably from an arcing in the high voltage multiplier or in the flyback windinngs. I am very sure that the flyback assembly with the high voltage multiplier, and most likely the horizontal output transistor will have to be changed just to start. It is also possible that there may be some failure in the power supply as well.

The set would have to be serviced by an experienced TV tech. As for the cost, it will be a bit expensive.

Jerry G.

youre having deflection problems could be related to the flyback. But this type of repair is better off with an experienced tech that has the proper equipment and knowledge to diagnose this chassis

Hi there!
Sounds like convergence Amp to me. Refer to a repairer if you are not sure. Good luck,JUS004

Hi.

 

What is picture like if you change screen size to 4-3  is this picture size ok & fault only shows in the wide screen formats.

You probably have a component breaking down on one of the circuit boards. It would have to be checked out to find out which one. Stargazer

Those lines sound like "retrace lines" and several things can cause them. The most common are shorts inside the picture tube and shorted semiconductors in the video driver circuits. They can also be seen if the blue screen voltage is too high or if someone has tampered with the screen voltage control.

Simple problem. In all likelihood, The Vertical Output IC has failed. It will be TDA 8177. Replace. Or, it could also be that the Supply to that IC has failed. Unless you are competent in Solid State repairs, do not try this by yourself. get a professional Technician to have a look.IC should not cost more than 15-20$ pluch Tecnician fees.