Re: SONY XBR-65X850A Won't turn on
Using wired connection directly from my router
Slavabusy
Member
Last Activity: 04-30-2020, 02:37 AM
Joined: 01-17-2020
Location: ALEXANDRIA va
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Re: SONY XBR-65X850A Won't turn on
Finally, I have some progress.
First replacement main board didn't do anything, but they were nice and sent me another one.
Now, tv turns on and I can see the menu and navigate there.
However, it doesn't go online for any apps, or updates.
Status is showing connected, ip, and all that.
Both boards they sent me are used, I think....Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Thanks.Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
When I press power button
Pin 28 (POWER_ON) voltage doesn’t change, 0v
I didn’t have a 1kOhm resistor to kick on the power boards.
Pier12, this is nice repair manual, but not sure if it covers 100% of the model I have because I couldn’t find JL9129 or any JLs on the main board.
But, I ordered main board from tvpartstoday.
Hopefully, it’s gonna make it!
Fingers crossed..Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
You guys are awesome! Thank you all! Sorry, didn’t have a chance to test any yet, but I will do soon!Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
That is correct! I didn’t even try to turn it on, because it doesn’t turn on..Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Thank you! Will do in the evening!Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Board G6, connector CN7401:
Pin 25 STBY3.3v = 3.4vdc
Pin 27 AC_OFF_DET = 3.4vdc
Also I checked STBY FB (top left corner of board) 3.3vdc on D6201 Cathode (white mark on diode)
3.4vdc is present at the Cathode of D6201.
No other pins of any other power boards connectors showing voltage.
Will take pictures of the back of the power boards tomorrow.
Thank you all guys for participating it this repair thread!Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Please DISREGARD this post, my mistake....Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Is there a similar post you can refer to, where I can see how to properly post the pin voltage test results?
Thanks.Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Does it look like everything is fried? Does it worth fixing at all?Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
No any dc voltages outputs from power boards. Instead, some pins showing around 3v A/C.
In order left to right:
Plug cn6601 all zero volts
Plug cn6602 all zeros
Plug cn6402 all pins except #1 measured 3vac, #1-zero volts
Plug cn6401 (from top to bottom)
Pin #2 measured 3vac, all other pins 0 volts
Input voltage is 120vac at both of the power boards, fuses are good.
Any ideas appreciated!...Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Ok, here it goes now!Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
R_J, thanks for asking! So, when I got this tv from my friend, he just said that it is stopped working, only red light flashes. Then, I loaded tv to my van in upright position, leaning to it’s back against cargo wall. While I was driving, unfortunately tv bounced and landed on some cardboard boxes. That’s why I am not sure if it is broken or not. Visually it is ok, but sometimes you can see only after power is on.Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Thanks for advice, Budwich! I will do soon!Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Tried to turn it on with all speakers unplugged, no change. 3 flashes.Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
I have no oscilliscope, unfortunately.Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
I am wondering if there’s way to hard test to make sure panel is not cracked. Then I can just order main board and give it a try.Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
I found nothing after visual inspection. Removed and checked 3 bigger boards all around. Components look good, same as connectors and wires.
Multimeter is handy, but don't know what can I do to troubleshoot further....Leave a comment:
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Re: SONY XBR-65X850A Won't turn on
Thank you, R_J! Will open up tv soon, inspect and report here with pictures.Leave a comment:
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