Re: Sharp aquos LC-40LE810E
After I removed the ribbon cable between lcd and tcon board I got same voltage 0.67v.i couldn't do the dummy test cuz I was waiting for the KIA378R12PI ic I ordered from online. Even then am confused on how to do the dummy test cuz I am a novice so if you can please upload any pics /vdeo or link to any post here with instructions on how to do the dummy test. Thanks...
Jstone86
Member
Last Activity: 12-02-2018, 10:18 AM
Joined: 07-08-2018
Location: Kumasi
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Re: Sharp aquos LC-40LE810E
After theKIA378R12PI (Q7909) arrived, I changed it and as usual TV dosent turn on. Previously I got 2v PL pin 1 and 2 when I turn on the TV but now get 0.67v so memu touch key buttons don't respond only TV remote also the led light blink 2-2 without stopping hmm. If I disconnected the Pl connector I get 12volts on PNL pin 1ansd 2Leave a comment:
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Re: Sharp aquos LC-40LE810E
I think i can get 12R 10W resistor from the local electronic shop here but i have also ordered KIA378R12PI from aliexpress which delivery is approximately 2 weeks.by the way can you please show me how i can stimulate or test with the 12R 10W resistor.pictures wud be better .thanks...Leave a comment:
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Re: Sharp aquos LC-40LE810E
I indeed get 12v when I disconnected the Pl connector. But only 2v flows in when I connected back the Pl. So that means my KIA378R12PI is OK right? What do u suspect the problem is...Leave a comment:
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Re: Sharp aquos LC-40LE810E
So budm just to clarify for my TV, I need to CHANGE the KIA378R12PI??Leave a comment:
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Re: Sharp aquos LC-40LE810E
Hehehe just wants to make sure that I ruled everything out...Leave a comment:
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Re: Sharp aquos LC-40LE810E
I noticed something today, if 8 removed the tcon connector pin power from psu board I get 12volts on PNL pin 1 & 2 2 which immediately drops to 0.but when I connected the tcon I get 2 volts on pnl pin 1 & 2 and drop as usual. By the way the I think there might be some problems with the tcon cuz I see some black mark on the tcon Pl female comector. Here is ten attach pics...Leave a comment:
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Re: Sharp aquos LC-40LE810E
Finally I was able to located PNL-12V. I got 2 volts when I Power on the TV and it immediately drop to 0...Leave a comment:
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Re: Sharp aquos LC-40LE810E
So which way forward? At the moment am not sure about the next step to take maybe Budm can throw more light in regards to 12V PNL connector pin which I can't located on the motherboard except PL on the inverter board. Can guy help me located PNL-12V connector pin since guy have same TV model...Leave a comment:
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Re: Sharp aquos LC-40LE810E
I am also noticed something and don't know if it's unusual with regards to PC7703
Both PIN 1 and 2, I get 2 volts which stays steady immediately I turn on the power of the TV but keep on fluctuating but never drops down beyond 2volts. It stays at 2volts but keep on fluctuating.
For PIN 3 and 4,immediately I turn on the power of the TV, I get 4 volts and it immediately back to 0 volts when the red light on the motherboard goes off.
I will upload pic of the red light on the motherboard for reference...Leave a comment:
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Re: Sharp aquos LC-40LE810E
Sorry for the late response. I have been having troubles in uploading the pictures here...Leave a comment:
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Re: Sharp aquos LC-40LE810E
Sorry I am novice so a little confused where can I please locate PNL connector pin??...Leave a comment:
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Re: Sharp aquos LC-40LE810E
No sir. The voltage on pin 1 of pc7702 stays on and dosnet dissaper. I measure about 2volts...Leave a comment:
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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= 4.90VLeave a comment:
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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-POWLeave a comment:
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Re: Sharp aquos LC-40LE810E
OK bro I will try it and let u know tomorrow cuz it's late hereLeave a comment:
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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 aliexpressLeave a comment:
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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?Leave a comment:
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Re: Sharp aquos LC-40LE810E
Thanks I will try and give you feedbackLeave a comment:
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NEED HELP IN FIXING SHARP LC-46LE814E WITH ERROR 2-2 LED FLASH BEEP CODE
Sir,as you can see i have sharp tv with same problem from the above thread [url]https://www.badcaps.net/forum/showthread.php?t=49486[/url].
I have taken my time reading all the post and comments in the thread but as a novice i am a bit confused and want you to clarified something for me.
After reading how the OP got his tv fixed it seems all he did is by adding 68k ohm smd resistor on top of R7019 resistor on the motherboad.
should i add 300~1k resistor next to pin 11 and other end of resistor to pin...
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