Sharp Aquos LC-60LE600U no power period

[budm]

Re: Sharp Aquos LC-60LE600U no power period

https://www.badcaps.net/forum/attach...2&d=1485933978
You count the pin wrong, I guess you did not read my post 7 about the pin '1', '2' and the reporting format.
I do not have the board in front of me so I did the research to find the pictures of the board and study them and give the instruction on how the pins are assign.
What more do I have to do?

[dskall]

Re: Sharp Aquos LC-60LE600U no power period

The readings make no since to me. Look on other posts to see how to format your voltages. Should be
p1 pson =?v
p2 gnd =0v
p3 stby5v =?v format

[mmartell]

Re: Sharp Aquos LC-60LE600U no power period

Ok so I think I know what pin and its number - when I tested with the dmm with power to the board and compare to what printed around the, they don't add up. I had back probed but the readings didnt change but I will need to run through it again tomorrow. Any other suggestions?
any luck on the 757?

The readings aren't supposed to change but you're supposed to LABEL each pin so we know what they SHOULD be.

[tjmethod]

Re: Sharp Aquos LC-60LE600U no power period

Hi thanks I saw the D7805 diode but I did check it and all the ones on the board in diode mode but without removing them from the board. Between all of them there was a range from 300's to 600's with the pos side on the anode side and neg on the cathode side and reversing the probes gave me an l or 1 left on the screen. Does that sound like it may be ok?

[tjmethod]

Re: Sharp Aquos LC-60LE600U no power period

Ok so I think I know what pin and its number - when I tested with the dmm with power to the board and compare to what printed around the, they don't add up. I had back probed but the readings didnt change but I will need to run through it again tomorrow. Any other suggestions?
any luck on the 757?

[R_J]

Re: Sharp Aquos LC-60LE600U no power period

I don't know exactly which board you have but Sharp did have a problem with D7805 shorting. might be worth checking. original diode is NUR460, change to MUR460

[budm]

Re: Sharp Aquos LC-60LE600U no power period

If you look at the PD connector on the top side of the board you will see '1', and '2' printed right next to the connector.
The exposed pin you can see on the top side of the board are the ODD number pins, the other pins you cannot see are the even number pins, which you can probe them on the female back side of the connector.
We need the pin name and follow by the DCV reading of each pin so we can see which Voltages and signals are missing.
http://www.shopjimmy.com/sharp-runtk...-led-board.htm
Sharp RUNTKB057WJQZ (DPS-168JP A) Power Supply / LED Board
Pictures provided by shopjimmy.

[tjmethod]

Re: Sharp Aquos LC-60LE600U no power period

Hi thanks I am just confused as to what slots correspond to what numbers but I did go back and back probed each one again while hitting the power button and didn't see any change. I did accidentally leave out a reading before which was 0.00 that I don't see matters. Do you know where I can locate a diagram

[dskall]

Re: Sharp Aquos LC-60LE600U no power period

The connector PD and the numbers around it tell you what voltages you should have on the pins eg PD-5-6-7-8 should have 13.2vdc when things are working. Next to connector should tell you were pin 1 and 24 are on connector. Take readings and post as p5 13.2v = voltage you get for all pins. Then push power button while probing Pin 14 ps-on and you should get a voltage.

[tjmethod]

Re: Sharp Aquos LC-60LE600U no power period

With the advice of 'dskall', I did back probe the main board plug- plugged in to the power supply and power to the board. I have a picture and illustration of the voltages I found. I have no schematic or diagram or know where to find one. Any input with what I found would be a big help-
Thanks

[tjmethod]

Re: Sharp Aquos LC-60LE600U no power period

Hi yes there is no lights at all as if it isn't plugged in

[mmartell]

Re: Sharp Aquos LC-60LE600U no power period

No flashing light sequence on the front bezel ?

[tjmethod]

Hello starting a new thread since I had the wrong model on the last one. It is a Sharp Aquos LC-60LE600U not the LC -70LE640U. Anyway, the set has no power period unplugging, holding power down for 10 sec the plugging back in /vol+channel down while plugging in did nothing,. I did pull the power supply and checked the fuse with a dmm which zero'd out buzzed. And will have to find what all the pins should read from the socket that connects to the main board. If anyone else might have any suggestions or what else to check that would be appreciated...