help with schematic or with fixing this pcb

[R_J]

Re: help with schematic or with fixing this pcb

I have NO schematic, I have a poor quality picture of the board to go by, I took a guess at the value of the resistor based on other power supply circuits.

Meters that beep only cause confusion, the threshold of resistance that they beep varies between meters, its only real use is for tracing wires or circuit board traces.
Rely on the actual OHM reading when you measure resistors.

[budm]

Re: help with schematic or with fixing this pcb

"I have noticed that when I test for continuity on some of the resistor, take make a beep and some of them not. But, when I test for OHMS they show the correct value." Why would you want to test the resistor value using Continuity mode on your meter?

[budm]

Re: help with schematic or with fixing this pcb

Are you 100% sure that V856 is good?
What is the RESISTANCE reading between Source pin and Drain pin of that V856?
What are the part numbers as printed on the bodies of V856, V857? And what part number did you use to replace them with?

[buchman]

Re: help with schematic or with fixing this pcb

Are you 100% sure that V856 is good?
What is the RESISTANCE reading between Source pin and Drain pin of that V856?
What are the part numbers as printed on the bodies of V856, V857? And what part number did you use to replace them with?

I have replaced both of them, took them out of the identical pcb with the same part number.
The resistance reading on both of them is 12M ohms and their part number is NDF10N60ZG.

[buchman]

Re: help with schematic or with fixing this pcb

Hi guys, still on it.
It's turning on while off the tv and I do get 12v on xp 803 connector but I am not getting the STB voltage. Is it only when the PCB is connected with the rest of the boards on the tv?
or I should get the STB voltage even with the pcb out of the tv?