Re: Hisense 65H6570F Logo shows then turns off
Thank you very much, it is a solution that can work.
USmechS
Member
Last Activity: 04-28-2022, 09:41 PM
Joined: 04-25-2022
Location: Arlington, Texas
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Re: Hisense 65H6570F Logo shows then turns off
Thank you for the clarification about the voltages. It makes perfect sense.
I think the TV has 5 strips of LED. the picture of the back of TV is attached. If it is not clear, I can see only 5 sets of pin placements on the back on each side....Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
The repair shop asks for around 200$ if it has to change backlight, which is not unfair. But I may get a new TV and sell this one as is and maybe spend in that ballpark.
I have called the Hisense service again, The person I talked to was adamant it is not a BL issue, which I do not trust that much. He told me tier 2 may send me a new firmware or contact me. We'll see what happens.
Can a LED tester give me readings that prove BL issue beyond doubt without opening up the panels?...Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
Is it at all possible that the difference in voltage is due to lower port having less LEDs to drive? 86V is very close to being 2/3 of 136V. If the TV has 5 LED strips, and the top port driving 3 of them and the bottom 2 of them, 136-86 split is not awful.
Again, I am wishing this not be a BL issue since I cannot realistically fix that....Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
If it would work I'd do it. LOL...Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
Thank you for all the help Diah. If it is BL LED issue, I am not comfortable removing all the panels to get to the LEDs. Is there anything I can do short of removing panels?...Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
Without the BL socket on:
XP905 (the one on top) :197V
XP902 (the one on bottom): 197V
Both reduce when the TV turns itself off
With the BL socket ON:
XP905 (the one on top) :136V
XP902 (the one on bottom): 87V
Both reduce when the TV turns itself off...Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
I think each positive is 120 V 900mA based on the output of the board written in the middle picture.Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
1. I removed both the BT/wifi module and the speakers, no difference.
2. I only removed the BT/wifi module, no difference
3. There is no voltage charts. Pictures of the top and bottom of the powerboard is attached. There are 4 wires in the BL socket....Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
Last night when I took the cover off, I unplugged the BL from power board, no change in the power LED flashes. Later I unplugged the lcd ribbon cables, no difference either.Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
This did not work, no picture or BL or power LED flash or anything. tried multiple times, both with the TV power button (remote batteries out) and with remote. Tried holding the TV power button after plugging the TV too, the original issue of logo happens. Tried holding the remote power button after turning the TV on, same issue....Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
I apologize for not mentioning the android TV part.
I tried a 2GB fresh formated FAT32 MBR mode. Same results. BL on one power LED flash no picture, restart, BL on one power LED flash, restart, BL on some purple line sections flashing and moving up and down one power LED flash, repeat....Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
I do not have any instrument to check the voltages now, That need to be tomorrow. I appreciate it if you can walk me through how and where I need to check for various issues (BL, Logic board, Power board, etc.)Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
These are the pictures of the boards....Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
If it is any help, The power LED light on the tv starts as ON when the TV os OFF, when I turn the TV ON, the power LED light turns OFF, then flashes 2 times before the TV turns off and the power LED light goes back to ON. It tries to do the 3rd flash, but in the middle of it it TV turns OFF and power LED light goes back to ON.Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
It just does not have any joystick, or any other button. I have checked all parts of it....Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
You are helping immensely. How do I do inter recovery mode ?...Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
There is only a physical power buttonLeave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
Yes, it is android TV. How do I do inter recovery mode ?
BTW, there is no reset pin or hole or anything....Leave a comment:
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Re: Hisense 65H6570F Logo shows then turns off
I had a Samsung TV where BL LEDs died. It shows picture but no backlight at all. If I put a flash light to it I can see picture. That has been my experience with BL. This is why I am asking.Leave a comment:
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