42PFL3606H/58 no power

[domix]

Hello,
At this tv i have no power. I open it up. Fuse was blown and this on picture 2 is blown at one leg.
What to? New chip and fuse or new board?
What can i check.

Thanks

[nomoresonys]

Re: 42PFL3606H/58 no power

Replace it, need to check all the components in that area, diodes, resistors and the 2 transistors there on their own little heatsinks, test those transistors for a short, none of the 3 legs should show continuity to either of the other two legs of the transistor.

[lotas]

Re: 42PFL3606H/58 no power

As a rule, in these power supplies at 90%, if the standby PWM burns out, then it carries away the standby transformer (turn-to-turn circuit of the primary winding).