TV SONY KV25FX30 PROBLEM

[KYRLAG]

MY PROBLEM WAS THE STK2515 TRANZISTOR FOR HORIZONTAL WAS BURND AND ALSO THE HORIZONTAL TRASFORMER. I CHANGE BOTH THE TV START WORK. THE HIGH VOLTAGE IS OK BUT THERE IS NO ADJST AT BRIGHTNES IF YOU LOOK CAREFULY YOU WILL SEE THE PICTURE IN THE DARK SCREEN. THE SOUND IS OK.

[hmasri69]

i was have the same problem
there is 2diod & resistanc all(smd)burnd near the control ic
i dont have the no now............

[Joentje]

Check/replace these components in the ABL-line, 2x SMD-zenerdiodes 6,8V, 1x SMD-diode 1N4148 and 1x SMD-resistor 220 OHM.

If the problem isn't solved, replace the processor (SMD).
In 99% of the cases after a defective LOT the processor is also defective.

[Joentje]

I guess your TXT and OSD are OK.

[Baeteman]

Hi there,

Have you adjusted the Vg2 pot on the new flyback trafo ?
They are always deliverd with this one fully CCW.

Kind regards.