Sharp aquos LC-40LE810E

[rievax_60]

Re: Sharp aquos LC-40LE810E

Those voltage readings show that the AC-DET is working properly.
There must be something else wrong, Does the voltage on pin 1 disappear after 7 seconds also?

[Jstone86]

Re: Sharp aquos LC-40LE810E

I also measured the pf Voltage of PC7703 with these reults which immediately drops to zero like after 7 secs or so
PIN 3= 4.74v
PIN 4= 4.90V

[Jstone86]

Re: Sharp aquos LC-40LE810E

mr rievax 60,
this is the volts i get after i replace R7019 with a 33K cabon film resistor.

PIN 1 - 12.9V UR13.2V (SIGNAL)
PIN 2 - 12,9V UR13.2V (SIGNAL)
PIN 3 - 12,9V S13.2V (AUDIO)
PIN 4 - 12,9V S13.2V (AUDIO)
PIN 5 - 12.9V SGND (AUDIO)
PIN 6 - 0V SGND (AUDIO)
PIN 7 - 0V SGND (SIGNAL)
PIN 8 - 0V SGND (SIGNAL)
PIN 9 - 3.10V AC-DET:
PIN 10 - 3.03V PS-ON
PIN 11 - 4,9V BU5V
PIN 12 - 3.25v PNL-POW

[Jstone86]

Re: Sharp aquos LC-40LE810E

OK bro I will try it and let u know tomorrow cuz it's late here

[rievax_60]

Re: Sharp aquos LC-40LE810E

Measure some pin voltages on the PD connector as the TV is being turned on.
Look at post 21 as an example.
I mainly want to know what happens at pins 1 and 9.

[Jstone86]

Re: Sharp aquos LC-40LE810E

I replaced r7019 with 33k carbon film resistor and it didn't work basically same 2-2 LED blink light. I Mayb I should wait and order smd 33k resistor from aliexpress

[Jstone86]

Re: Sharp aquos LC-40LE810E

I couldn't get 68k or 33k SMD resistor to buy from my local electronics shop so I bought 68k and 33k carbon film resistor so I hope it will work. The two pins of carbon film resistor is it interchangeable or reversal so that I can solder on top of r7019 on any of the two pin?

[Jstone86]

Re: Sharp aquos LC-40LE810E

Thanks I will try and give you feedback

[rievax_60]

Re: Sharp aquos LC-40LE810E

Yes, solder a 68K on top of R7019 or replace R7019 with a 33K or something a bit lower. The value is not critical. This mod increases LED current to compensate for the loss of the opto's CTR due to aging.
I don't recommend jumpering pins 9 and 11.

[Jstone86]

Re: Sharp aquos LC-40LE810E

I have same model with same flash beep 2-2 error problem.after going through all the comments on this thread can someone please confirm if all i have to do to solve this problem is to just solder 68K resistor on top of R7019??should i forgone plugging resistor next to pin 11 and other end of resistor to pin 9???

[meme123]

Re: Sharp aquos LC-40LE810E

I changed the resistor to 570 ohms and also resist 68k as you said in the race I had the same TV and holidays and you as you said and succeeded television, but this television did not respond help

[meme123]

Re: Sharp aquos LC-40LE810E

Hi, I'm a Sharp Acua lc 810 with a fault similar to the holidays but the flash is frequent and does not stop please help outside flute 5 v only

[budm]

Re: Sharp aquos LC-40LE810E

Normal condition AC-DET = H (HIGH) = >2.5V, typical for this board is around 3~3.5VDC range, L (LO) = <1V for fault condition.
AC-DET signal tells the main board if the incoming AC is within the operating range of the power supply or not.

[sathishbds]

Re: Sharp aquos LC-40LE810E

Is there the pins (9/AC_DET) of P9601 at “H”?

what is mean by "H" here?? Can i anyone tell me. Thanks in advance.

[angel-boy]

Re: Sharp aquos LC-40LE810E

I fix the tv , teste first time with pin 9 , plugged in pin 11, and replace R7019 with 34k resistor , and finish , tv works great

[rievax_60]

Re: Sharp aquos LC-40LE810E

The previous posts don't say exactly that. The safest and most direct action is to add a 68K on top of R7019. It is next to Q7802. Look at post 79.

[angel-boy]

Re: Sharp aquos LC-40LE810E

hy , i have the same problem
and I took out pin 9 - AC-DET an just plugged it next to pin 11 - 5v , the tv power on now,

so the next step will be to change 68k smd resistor and also 33k and 4 opto-couplers ?

[Nightmare0]

Re: Sharp aquos LC-40LE810E

I just wanted to donate straight to you. Anyways I will donate at least to this site. Thank you

[rievax_60]

Re: Sharp aquos LC-40LE810E

I suspect that most members are happy enough to help, so long as it doesn't become too frustrating.
If you want to donate, it should be to this forum which enables members to help each other.

[Nightmare0]

Re: Sharp aquos LC-40LE810E

I know. I was asking, if you both will get something of that :-)