Fuse blows when plugged in. Found a bad transistor, guess it is the horizontal output. it is stamped p5nk50zfp gk180 v6 chn 607. The #'s don't seem to match when I try to search to get a replacement. I need the part # and or where I can purchase a replacement transistor.
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I am guessing that the ceramic resistor is close to the output transistors. I would also guess that one or more of the output transistors has shorted. This causes a high current draw that is blowing the fuse. You could also have a power supply problem. The ceramic resistor is a .22ohm dual emitter resistor that is used in the output stage. The transistors located close by are probably shorted and should be replaced. Start there and let us know what happens once the transistors and the resistor are changed.
The only suggestion i have is that you could have a defective flyback transformer if still not turning ON.
You should check B+ voltage and see if it gets to the horizontal transistor, if it does; chances are that the flyback is defective on this TV.
I looked for an schematic, but no luck find one. Looks like they do not exist.
I could not find anything schematic for your TV.
I would suggest to check the horizontal transistor, if the transistor is OK; check the voltage at the collector. NOTE: be very careful when measuring this voltage, you should get about 130 VDC.
If that voltage is present, you might have a defective flyback transformer.
I will say that this part is shorted if it measures continuity on all the leads regardless on how you tested.
Was this mosfet nearby the power supply circuitry?
You can also check the horizontal output transistor that is mounted on a heatsink near the flyback transformer.
do not put another fuse because there is a shorted in either the power supply circuit or the horizontal deflection circuit. in power supply try to check the rectifier, filter capacitor, or the regulator ic/transistor. in horizontal, try to check the horizontal driver/
output transistor or the flyback transformer. good luck! but if u dont know anything about this much better to bring it to a qualified service technician. good luck!