Re: Sharp aquos LC-40LE810E
There is a yellow Donate button at the very bottom of this page.
Announcement
Collapse
No announcement yet.
Sharp aquos LC-40LE810E
Collapse
X
-
Re: Sharp aquos LC-40LE810E
Ok then. And what about that donate?
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Originally posted by Nightmare0 View PostBut that user fixed it by replacing all optos, didn't he? I am going to keep this tv in my bedroom. I am not.going to profit on this tv with questionable life span.Last edited by rievax_60; 10-13-2015, 11:55 PM.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
That is for tonight folk, on to the next project, cheers.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Originally posted by budm View PostYou should also turn down the Backlights level down as low as possible but still have good pictures in the user setup menu, this will help extending the LEDs' life, they will run cooler.
Actually it was the lower back light setting that showed up the flickering problem on the Sharp TV that I fixed.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
But that user fixed it by replacing all optos, didn't he? I am going to keep this tv in my bedroom. I am not.going to profit on this tv with questionable life span.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
You should also turn down the Backlights level down as low as possible but still have good pictures in the user setup menu, this will help extending the LEDs' life, they will run cooler.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Keep in mind the back light flickering fault that can develop that is mentioned in the other thread.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Thank you very much. Now I will put tv together and test it. Sorry for my mistakes. You managed to help me even my lack of electrician knowledge and not perfect English. This experience made me to learn a lot of interesting stuff. I hope this thread can help someone in future. I can see, there is donate button on the bottom. If I donate, will you get something?
Co-worker said, he also has some broken tv in basement. Maybe I will make another thread to help him. But first I will give you some rest :-) it had to be exhausting to work with me. Thank you again and provide me some information, where can I donate.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Originally posted by Nightmare0 View Post1-2: 1,01v
3-4: 0,25v
So when you add that 68K Ohms resistor the LED will have more forward current (If) so the Photo-transistor is turned on more (it has to do with Current Transfer Function (between 50%~600%) of the Opto).
The reason I ask about the VCC Voltage at those two points is to find out if it is too low, and the OPTO may be operating at marginal point already so it does not take much for it not to be fully on.
The output of the OPTO is used to drive the switched transistor Q7061, IC7061 that control PD-PIN 9 (AC-DET) to make it HI or LO depends on the AC Voltage level.
So you can leave it like that with that added resistor.Last edited by budm; 10-13-2015, 11:12 PM.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Originally posted by Nightmare0 View PostBudm, you are right. It worked only once.
So again sorry for your time while I soldered resistor to.wrong place. That's what you will get when you solder at 6 am.
So now...... Again, one more time .
This time I soldered 68k resistor on right place.... Put everything back. Tv is working. Now it's time for measuring. Tell me what do you want to measure. Is this resistor final fix? Or should I buy something?
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Photos of 68k resistor fix
Also found out, that that red led (D3301) on mainboard is still flashing while tv is on.Last edited by Nightmare0; 10-13-2015, 10:33 PM.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Budm, you are right. It worked only once.
So again sorry for your time while I soldered resistor to.wrong place. That's what you will get when you solder at 6 am.
So now...... Again, one more time .
This time I soldered 68k resistor on right place.... Put everything back. Tv is working. Now it's time for measuring. Tell me what do you want to measure. Is this resistor final fix? Or should I buy something?
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Any, even we are not getting the correct AC-DET signal regardless, you still should be able to fool the main board using the resistor to pull AC-DET high, you did pull the AC-DET wire off the PD female connector when you use the resistor the second time but the TV will still not start, right?
To me that is a bigger problem if you cannot get it to work as before.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
BTW, PD-9 (AC-DET pin) is not driven directly by the OPTO.
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
Omg.... I am tired and retarded..... I really soldered that resistor on top of.wrong resistor. f-ck, sorry for your time.... Going to fix that....
Leave a comment:
-
Re: Sharp aquos LC-40LE810E
You want ne to measure voltage between marks + and - vcc1? It will take me some time,.since its back side of pcb and I am putting it back to tv every time. I have to figure out. Just tell me if to measure between these +- pads. I will solder some wires and.measure
Leave a comment:
Leave a comment: