Hi every one! i have a tv Sharp Model: LC 37D42U, witch have a DELTA power supply DPS 178AP
At first i had a bad power supply and the tv didn't have standby power (BUS 5Vdc) checking the board i realized that the two main MOSFET P16NS25 were shorted.
So i buy another one, it wasn't brand new so i trust the guy who sell it to me that it was good. Now i just connect the new board and i have stand by power (Bus 5Vdc), but now i have the power and opc led flashing one time and then only the power led flashing on time.
I've been investigating and the service manual tells me that flashing patron means that i have a UR13V problem.
So i measure UR13 pin and i have nothing and the 24V for the inverter board i have nothing too.
I also did the pressing the vol up y ch down button thing too. And the only thing it does is that the power led stays on nothing else. With this scenario i measure all the voltages again and have the same result.
Can anyone give me some advice? what can i check? Maybe if this board is bad i can fix it with components of the old one?
At first i had a bad power supply and the tv didn't have standby power (BUS 5Vdc) checking the board i realized that the two main MOSFET P16NS25 were shorted.
So i buy another one, it wasn't brand new so i trust the guy who sell it to me that it was good. Now i just connect the new board and i have stand by power (Bus 5Vdc), but now i have the power and opc led flashing one time and then only the power led flashing on time.
I've been investigating and the service manual tells me that flashing patron means that i have a UR13V problem.
So i measure UR13 pin and i have nothing and the 24V for the inverter board i have nothing too.
I also did the pressing the vol up y ch down button thing too. And the only thing it does is that the power led stays on nothing else. With this scenario i measure all the voltages again and have the same result.
Can anyone give me some advice? what can i check? Maybe if this board is bad i can fix it with components of the old one?
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