haha yeah
I would only pay $100 if I can see the screen working for Sony
other would be $50 or free
I can believe some people asking cracked screen for 250-300,
before I got few free LG or samsung were tv works fine just the back light was burnt
but I don't want to do samsung edge BL anymore as I found most of them after burning the LED you take it apart
you see the diffuser cracked or plastic sheets all metled so after replacing the BL
the tv screen still look like crap all lights everywhere
as for LG, spread out back light...
Ihandyrepair
Member
Last Activity: 08-20-2024, 02:21 AM
Joined: 09-30-2017
Location: Vancouver bc
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yes I am not worry people calling me newbie as I am new at this
but I do this as hobby only, so I don't think I will learn how to reball large chip like ram or cpu
if doing this full time, I think I should.
but something like small cap or resistors maybe ok
I look it this way.
if I get a tv for free or under $100
and if lucky is just something minor or fixable like led strips then why not spend the time as hobby
but I have to spend anything more than $250 to 300 for a used tv
I don't think it is worth to do it.
I guess there are...Leave a comment:
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thanks for your help but
you have to understand I am new in fixing tv and still learning.
I am guessing most of us are still learning.
you may be the best tech here but they way you tell me what to check I do not get it
but after reading your post more carefully and did more research
I am guessing you are trying to say this
[url]https://youtu.be/rq-RwfDrU8c?si=PTnO4v7EDOq5GHZu[/url]
Like this guy showed cheap led tester can cause miss diagnosing led failure.
I guess I already bought the led strips
maybe I should just...Leave a comment:
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Well the thing that made me scratch my head is that I did take the screen apart, both edge led looks good condition,
And I used one of those led strip tester showed voltage draw
each led had like 6 sections
each section were drawing 56.9-57v
if one of the led was bad it would had lower or higher voltage draw, right?
also I thought maybe the trace or cable to led,
so I tested the led sections from the LD boards that has each sections test pads
same result
each section was drawing 57v
I was hoping it was the led strips or maybe the...Leave a comment:
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I just noticed that if I unplug the cable from LD board to mainboard and power it on
the backlight will turn on.
so most likely the LD board is ok and issue could be the main board right?...Leave a comment:
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Hey guys
I took the panel off
borh edge led strips looks good
I tested with the led tester
none burnt
all seems to work
each section 56.9 to 57.0v
no sign of any led is not working
what should I do?...Leave a comment:
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sorry I missed the part about dynamic dimming.
I guess Sony edge BL is different system than spread out led strips.
the 65X950G I was able to ground the BL_ERR to turn on the back lights to check if that is the real problem
thanks, got it, I will order the led first before taking it apart.
I will update you guys later when I am done...Leave a comment:
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Thanks for the tip
here is another similar setup on the same board
Red circle is the one I am thinking possible shorted cap
now measured 39 ohms on caps end or chip legs 5-6
yellow circle
Both caps measure 7k ohms
and same for the chip next legs 5-6
as for the backlights error, won’t remove the line BL_ERR to LD board and ground on the main board side would at least try to turn on the backlights (by pass the error)
but I get no reaction...Leave a comment:
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sony 55X850D black screen no front white or red led light.
Hi guys
strange one
I have a dead Sony 55X850D
when plug in, black screen, no front white or red LED, no back light no screen
Voltages I get
3.3v LD/power and main board
reg 12V
reg 19V
3.3v on power on pin
no Tcon on
no tcon 12v
no BL_on
I do get BL_ERR 2.0v
I tried to bypass it by ground it but still get same symptom
I did also found a possible shorted cap on main board as it is showing 10 ohms when measure with meter
or is possible the chip next to... -
Hi
I just got reply from shojimmy
they said there are no oem led strips unless from used tv
most led strip aftermaket are made in china
so my question for you guys
do you replace all led strips with aftermaket led strips when you have under 3 led strips to replace
or you just change only the burnt ones
I read some forum saying it is better to replace all
incase the voltage difference on the new and old
or that old ones might burnt soon too
others say new strips are cheap make trend to burn sooner...Leave a comment:
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Sorry to hear that
that is why I wanted to be sure before opening up
but mine is for sure is led strip issue
just wondering if anyone had replaced Sony led strips
where you ordered and are they OEM
or most are Chinese copies or refurbished
worry that buying wrong ones they trend to burnt easy
I had replaced Samsung strips and they started to burnt again after a year and they werent cheap crap from Chinese website
even I lowered the brightness to 50% right after replacing them...Leave a comment:
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I guess it is most likely to be LED backlights
but I want to be sure before you take everything apart
right?
By the way did you replace all led strips or just burnt one?
And where did you get them? Sony oem? Or online tv used parts?
I am worry about getting cheap led that burnt quickly...Leave a comment:
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Thanks for the tip
I always lower my brightness to 50-60%
most tv die because most owners turn brightness to 100%
imagine how hot it can get if running 100% oh a hot day
but don’t tell anyone
that way I can buy or get free tv to repair
hahaLeave a comment:
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Oh just let explain
this tv has 2 line that are BL_ERR
one from main board to power bower
this one is more obviously marked on the power board
2nd one is no so obviously
there wasn’t any label
but there is another one from main board to LD board
I saw YouTube for older model
the tech grounded that trace and works
of course I had to double check
I was getting 3v on the 2nd trace from main board to LD board
but no voltage from main board to power board
it is not a constant 3v, it was more...Leave a comment:
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hey Guys and ladies
I got the tv working again. there is another BL_ERR trace from mainboard to LD board. so tv now works fine. but the LD board still flash 3 times red.
after tv is working I used YouTube to show white screen. and I can noticed a dark spot near the centre so that means there is 1 or 2 LED backlight burnt.
I guess this will be a future project. at least with this test. I can be sure what to order.
you heard most people with 4 or 6 Sony blink red. they have replaced boards and still same issue
and I was worry if I open the tv and the led was ok. then...Leave a comment:
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Looking online
it seems the led backlight might be the issue
but anyone know a tip to check on the LD board to be sure the led is drawing more or less power or voltage ?
I only seen tech showing 2 wires Sony tv backlights repairs
where you can check the power withdraw with tester
so you can most likely confirm the issue
haven’t seen any repairs tech online with LD boards diagnosed
also they showed BL_ERR voltage up
This tv doesn’t have BL_ERR with power so I am worryi take it apart and all led are ok...Leave a comment:
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sometimes after removing a board or disconnect all wires to the main board or LD board. and put it back,
it will boot all the way to start up menu, to select the language. but only for few seconds then screen off and flash 4 led red on front of the tv.
any suggestion? is the back light LED ? LD board ? or main board?...Leave a comment:
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This board showing green led at start
then 3 flashing red...Leave a comment:
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Hi
I Tried the nick cheap trick
grounding the BL_ERR still same problem
Fuse on the led driver board are ok...Leave a comment:
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4 red flash led 65X950G boot Sony and android logo but then black
HI guys
I got here a Sony 65X950G - I tried to find any repairs guides for this model but not many online
here is the issue
I have Sony and android logo. but then 4 led red flash lights front of the tv
I have 3.3v ref. 12v reg then T con 12v when I press the power on button
but then I get black screen and 4 red flash light at the front LED
but I get 3 led flash on the LED driver board.
I check that few X900F or C YouTube repairs, seems that if you have 4 led red flash it could be due of LED black light error
so I tried...
No activity results to display
Leave a comment: