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LCD TVs - LED
Olevia TV Model 237-T12 totally dead does not turn on
79
hace 5 años
hace 5 años
greetings colleagues from the forum I got this tv that does not turn on totally dead, I uncovered it and had 4 filters inflated in the secondary source I changed them for new and the fault continues, I measured voltages in primary source and everything ok but in secondary there are no voltages but I I would like you to please provide me with the diagram and a little help, thanks in advance.
875
hace 5 años
hace 5 años
It is not difficult to look at a source, that is ... which diagrams do not usually exist, only from the Main but well it is almost easy if you are missing in high school or in continuous current ... it is very likely that you have the regulator, diode I bad transistor, you just have to read the components and look for their data seet to verify that they work correctly I am not short, start following each one of those capacitors and measure the components that are in their lines ... you have tried to disconnect the main from the source and see if stage 2 is still without voltage?
875
hace 5 años
that you change everything you can, capacitors that are around if you did not change them too and resistors the same, change those mosfet first and if you have more components ... then do the same, surely your source ... will live longer, try and rate better response, greetings
79
hace 5 años
ok I explain something to you the mosfer bring 3 patics called gds, door, drain and spout. to measure I put a black tip of my multimeter in drain and tip rola in spout gives me a resistance value of 477 a diode touched with the red tip the door to suichear and should give me a high resistance and gives me only 390, the mosfet It's fb11n50a. If you can tell me if this is ok or my mosfet is damaged. thanks
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