Re: Samsung LN46D630M3FXZA blinking stby LED
I have the same problem on my UN40H635AFXZA TV. When I disconnect the connector to the main board I get two results the backlight turns on and the voltages go from reading low to normal...I suspect I have a bad power supply.
Landcaster3
New Member
Last Activity: 08-08-2020, 10:55 PM
Joined: 08-19-2016
Location: whitsett
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Re: Sharp LC46d85u struck by lighting
Update, have not been getting any help from the forum maybe because not many people have the sharps...In any case I will continue to document here what I'm learning so that someone else can skip some of my t/s steps...
I notice my Error 3 volt wire coming from the TCOM or at least the ground is going to 0 volts when my screen goes blank. So I disconnected the connection to the panel and left the TV on over night...taking the panel out of the equation I manage to get the TV to fail, sound still worked so I know my main board is good...Leave a comment:
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Re: Sharp LC46d85u struck by lighting
Update I did some experiments seeing if the temperature was causing my problem but so far I have not been able to confirm that it was...The TV still shuts down after an hour and I have no faults ... I have however found out that I'm loosing a 3v Error wire when the TV is fail mode. I have also attached a schematic of my TV...I know people like to see picture...let me know what else I must do to get some help. I really need it on this TV....Leave a comment:
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Re: Sharp LC46d85u struck by lighting
Hey guys got an update, I thought my CPU was getting too hot and since the system is freezing on me with no codes I thought of putting a fan and leaving it one for a while...I did that last night and the temperature was really cool but still got up this morning, I had sound but no picture and no response from the tv. Could this be the inverters some please help me out ...Leave a comment:
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Re: Sharp LC46d85u struck by lighting
The number printed on the chip is Hynix 827A (HY5DU561622FTP-D43)...The service manual calls them as follows 256-Mbit ( 16M X 16bit) DDR synchronous DRAM...so I guess the OS of the TV is store there somehow affecting the power on start diagnostics...any ideas fellows.Leave a comment:
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Re: Sharp LC46d85u struck by lighting
Thanks but what you are saying is that my main board is bad...that's not really helping me at all...what I need to know for sure is what that chip does...is it in charge of self diagnostics of the monitor itself. I don't know that's why I started this thread...
Couple of points I like to make are desoldering this chip is beyond my skill set they are just too small.
Buying a chip writer and reader wont be economical
Assuming that the chip is bad and that I need to replace it just brings me back to the same problem I had...Leave a comment:
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Re: Sharp LC46d85u struck by lighting
the part number for the chip is IC8151, yes it will start every time but will shut down right after it gets to normal temperature. That's the reason I put two new (used) main boards..Leave a comment:
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Sharp LC46d85u struck by lighting
Hey Guys I have a sharp TV LC-46d85U, It was struck by lighting and these are the current symptoms.
1. Flash two power and OSD light 2x then single OSD light afterwards.
2. Was able to get into service mode and reset the monitor faults
3. Upgraded the firmware
4. The TV starts and works for an hour, sound picture etc.
5. The TV looses picture, still hear the speakers, with no flashing lights solid OPS and Power lights, the TV becomes unresponsive and the only way to shut it off is by holding the side power button for 5 seconds
T/S steps... -
Re: New Members - please post your introductions here
Hi, I'm Wil from NC and I have started to pick up TV's from craigslist that are not working and just repairing them offering them back to people that need a tv for cheap...I'm not making any money but I'm not loosing either...it keeps my mind busy and I enjoy learning something new...Leave a comment:
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