Re: Hitachi 58HK6100U - Horizontal Lines (Bottom third of the screen)
Finally found some time to get back to this TV and after a few hours, I decided to stop and leave it to the point where I could not get the image any better.
I used the taping method and pins 1,2 and 10 had to be taped to get the best possible picture on the TV.
While watching the video you could not say there is anything wrong with it but as could be seen in the last (red) image, the left side of the screen lost its rich colours and they are now blurry.
If you guys...
kdaniel
Member
Last Activity: 11-26-2022, 04:00 PM
Joined: 10-21-2016
Location: Burton on Trent
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Re: Hitachi 58HK6100U - Horizontal Lines (Bottom third of the screen)
I will take more time with masking the lines. I am unfortunately not a super expert on repairs but I am willing to dig deep into problems and learn from each repair. I would like to know how to possibly identify which line is which signal... if that makes sense. I've been searching through the forum but can't really find this explained, wherever I look it was only a "guess and tape method".
Yes, but as from above, I tried random connection points without any luck,...Leave a comment:
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Re: Hitachi 58HK6100U - Horizontal Lines (Bottom third of the screen)
I guess my next step is to try a replacement T-Con. Listening to it, it has some weird buzzing sound and I might be crazy to say this but with the speed and consistency of buzzing, I can see the same consistency in the image. It's like a 1-to-1 ratio....Leave a comment:
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Re: Hitachi 58HK6100U - Horizontal Lines (Bottom third of the screen)
So after removing the frame just enough to inspect all ribbon cables going to the screen, I am leaving pictures of what I found.
I cannot determine exactly what it is but it looks dried up and just slightly sticky when scratched.
Closer inspection of all ribbons didn't show any physical damage such as tears or breaks and when I press each one of them down nothing really changes....Leave a comment:
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Re: Hitachi 58HK6100U - Horizontal Lines (Bottom third of the screen)
Honestly, looking at the TV in person they are not visible, but now looking a bit better at the images, yes, they do show up slightly more. However, the top part of the image seems fine with both ribbons in.
My thoughts are really mixed up looking at the screen for this long.
Do you think that only one screen ribbon could affect the whole screen? I'll probably just take off the frame now and inspect them closer. I was messing with and taping white LVDS cables till...Leave a comment:
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Re: Hitachi 58HK6100U - Horizontal Lines (Bottom third of the screen)
I assume I need to tape only a single line or a few at the time should be fine? Just want to make sure I am doing it right.
So far I've taped pins 13,14,15, starting from the right, together which "improved the lines" but I will carry on and keep you updated....Leave a comment:
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Re: Hitachi 58HK6100U - Horizontal Lines (Bottom third of the screen)
Correct me if I'm wrong, you placed something at the back of the ribbon cable just to pry it down better with the tab?...Leave a comment:
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Re: Hitachi 58HK6100U - Horizontal Lines (Bottom third of the screen)
Could you guide me/explain on how to locate and recognise pins?...Leave a comment:
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Hitachi 58HK6100U - Horizontal Lines (Bottom third of the screen)
As stated by the person I collected the TV from, it just stopped working overnight. However, I still gave it a go to try and repair it.
There is a thread on the same TV but with slightly different issues where they had to tape connection points on the ribbon cable, so I want to see if this is repairable by any chance.
After bringing it home and plugging it in, the TV turned on with its backlight working but had no picture. After removing the back cover, the first thing I tried is to unplug one of the ribbon cables and the situation is as follows.
[B]Left... -
Re: Samsung UE55JU6800 Issue with new backlight
I cannot confirm which side is facing LEDs but I remember I tried rotating it and it made no difference to me.
The sad story is that I already took apart this TV 2 times and I think it will need the 3rd one as well....Leave a comment:
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Re: Samsung UE55JU6800 Issue with new backlight
That is what I am thinking as well. I attempted fixing single LED diodes before and I do know how easy is to misalign the lenses. If they are not perfectly centered they are visible as dark circles. But dark circles and these darks spots are completely different.
I am now really thinking to order another set of backlights here from the UK and see if that changes anything....Leave a comment:
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Re: Samsung UE55JU6800 Issue with new backlight
@Storyteller12 yes, all plastic stand-offs are back in place. I didn't see any melting when I was replacing the backlight. I've seen that too before but this one is new to me that every single LED is visible as a black spotLeave a comment:
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Re: Samsung UE55JU6800 Issue with new backlight
It seems like that... Do you mean if I compared the model numbers or something else? I believe I ordered per model number of the strips. By the way, this is the first time I ordered strips directly from china, AliExpress to be more precise...Leave a comment:
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Re: Samsung UE55JU6800 Issue with new backlight
I placed back diffuser sheets back as they were, yes. Even tried different order to see if anything changes without luck. Only thing I could think of are cheap backlight strips I got.
Never had such a problem before with other TVs but always had bad luck with repairing Samsung TVs
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Samsung UE55JU6800 Issue with new backlight
Hi all,
Recently bought faulty Samsung UE55JU6800 which when collected was faulty and was not turning on or at least there was jo picture on it. After taking it home and turning it on the TV was working fine.
However, there were dark spots all around just like faulty backlight looks like. After replacing the backlight for new one, there is the same issue where black spots can be seen at the point of each led.
Any advice ore recommendations what could be the possible issue? Could it be cheap backlight i got from china?
Thanks in adv... -
Re: New Members - please post your introductions here
Hi all,
I guess I'll throw myself into deep waters of this forum.
Through years I've noticed that I have passion towards electronics fixing and that I feel super awesome when I get something fixed.
What is the best of all fixes usually don't cost a lot but they give you loads of experience and then it gets priceless.
This forum helped me loads of times and I can't thank enough to everyone for sharing their knowledge which can't be appreciatiated enough!
Hope to see you all through...Leave a comment:
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Re: New Members - please post your introductions here
First of all, I want to say Hello to every one and my name is Daniel. I finished secondary school for electrical engineers computer. But, afterall you need more education and you need to learn more things, no ?
One day i found this forum that gave me exactly that things and there was more and more things to learn. So, im repairing desktop PC-s and lap-tops and more deep into it, pc components actually. I'am doing this more like hobby not like job. So, from now on i'll be here and spy all the helpful things !
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