Re: Samsung PN50B650S1F sound but no picture
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"You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
Anyone get a chance to look at those videos?"You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
Look exactly like sustain voltage loss, has the Ymain arrived ?Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
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Re: Samsung PN50B650S1F sound but no picture
Should be here tomorrow, the postal service has been a mess since it's so close to the holidays.
As much as I'll be relieved if the "new" Ysus repairs the set, I'd really love to know what's wrong with the original, I might have to cross check all the components to see if I can find anything, my curiosity always gets the best of me!"You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
Well now I know why I couldn't find anything wrong with the original Ysus, there's nothing wrong with it! The supposedly "good" board I got in the mail today did the exact same thing as the original, which means I've received a faulty board which I highly doubt, or I've set my sights on the wrong problem.
Not sure where to go from here but I'm assuming it means throwing an Xsus at it and then most likely a Y buffer?"You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
Question, if the Xsus IS the problem would removing it and testing the Ysus give me steady voltage at VSCAN?
EDIT: Guess not, with the Xsus removed I'm still getting erratic voltage at VSCAN, only about 100V less.Last edited by WHaThEFLuX; 12-23-2016, 09:53 AM."You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
What about with the buffer out does Vsc go higher than 100v ?Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
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Re: Samsung PN50B650S1F sound but no picture
I'll test that now, you want the X out and the buffer out or just the buffer?"You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
OK finally! With the "new" Ysus board in the set and everything else connected except for the buffer, VSCAN is at a steady 200V!
I just realized that after replacing the ICs on the original board I never checked it with the buffer removed!
So now I'll put the original back in with the buffer removed, if it all checks out I'll return the Ysus I just received and get a working buffer, if not I'll just order the damn buffer and be done with it.
I guess with everything getting hectic for the holidays my diagnostic skills took a back seat!"You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
Lol it happens, I thought you said you checked it or I read it wrong which is probably the case. Hopefully you can sort it. Though good to keep a Ysus on hand and Ive had these blow up as I said and they are a pain. Also if a buffer does sort it I suggest you add heatsinks with thermal silicon to the chips on the replacement buffer.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
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Re: Samsung PN50B650S1F sound but no picture
I believe after I replaced the chip I just connected everything back up to test and hoped for the best.
I will definitely do that, how does one go about adding the heatsinks? Pull them from another board? If you could go into a little more detail about the procedure that'd be great!"You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
Also order some small ram heatsinks and thermal plaster to put them on. You might need to trim the glue around the scan Ic. Also make sure to get ram heatsinks with no thermal tape on as that stuff is rubbish.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
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Re: Samsung PN50B650S1F sound but no picture
Hope everyone is enjoying the holidays!
While I'm waiting for the buffer to arrive, another relative heard I was fixing this set and showed me his:
Is there any chance that this ISN'T the panel? Like tab bonds, loose ribbon, etc. Please someone tell me it's the panel so I don't have to have another 50" sitting in my house, I'm afraid if I keep acquiring sets my floor will collapse!Last edited by WHaThEFLuX; 12-28-2016, 09:28 PM."You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
No, panel is dead. Single lines never fixable.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
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Re: Samsung PN50B650S1F sound but no picture
So after receiving the Y buffer from across the pond, I installed it in the set along with the good tested Ysus and it fired right up!
In hindsight, if I would have just tested the original Ysus after repairing it without the buffer in, I would have realized that the IC Reecey mentioned was the only failed component on the board and reused it. Reecey, you were spot on!
I'd also like to mention that Tom was correct as well, if I would have tested OUTH(which I just realized was on the Y buffer), I would have discovered that the buffer was faulty.
Here's a pic of the boards installed with the heatsinks attached, hopefully they'll keep the buffer alive for a long time!
Big thanks to Reecey and Tom, you guys are top notch!Last edited by WHaThEFLuX; 01-09-2017, 01:16 PM."You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Re: Samsung PN50B650S1F sound but no picture
Awesome work, too bad I forgot to ask you to retest it with removed buffer. Ahh well you have a spare Ysus for when that one blows its self to pieces ehy and that bufer should only fail if the Ysus blows it with them heatsinks on lol good job
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Re: Samsung PN50B650S1F sound but no picture
Couldn't have done it without you man, thanks again!"You can only learn so much doing simple recapping and fixes. Ideally you want a really hard one to fix where you end up with a lot of dead ends and frustration. Then, and only then, do you learn how things really work."
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Hi, I have a Samsung UE50TU with:
- sound and backlight, but no picture
- when it arrived, it had a picture for a few seconds
- it keeps rebooting
- without ribbon cable between the two panel boards, it does not reboot but I have no picture
- without cable between mainboard and lcd panel, it does not reboot (but obviously i have no picture)
- when i try a tape fix, its keeps rebooting, unless I tape off pin 1 (the innermost pin). In that case it does not reboot but I have no picture.
- without cable between mainboard and lcd panel and with a jumpered... -
I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.
I ordered a supposedly ‘new' Tcon board this time, and... -
Hello everyone,
Ive got a UE60KU6079 on the workbench that is giving me some headaches trying to troubleshoot.
The previous owner stated that there had been white dots on the screen which from the description sounded like some lenses fell of the backlight LEDs.
He had opened the TV from the back, trying to get to the backlight, supposedly gave up, reassebled everything and gave the TV to me.
I expected the worst like ripped COF cables or a cracked panel but could not find anything like that yet.
Anyway I still fully expect that there has been something seriously damaged... -
Hi all
I was just given a Samsung TV with the issue. I read various threads and videos and attempted the ribbon tape method to gain an image, but no luck.
Symptom:
No picture no sound.
When I plug in the power cord, Backlight LED turns on for a half second and then turns off. The red LED next to the power button located center bottom flashes 2 or 3 times. When the power button is pressed after, it does the same thing.
No sound at all.
What I tried:
1. I tried unplugging the left or right ribbon... -
Hello all,
This is my first post, but long term lurker on the form learning as much as possible about these TV's. I was given this TV as due to a power outage of constant On/off of power to TV. The TV originally would just click on and off (Typical Reboot Cycle). I opened the back of the TV, and troubleshooted by taking the 96 pin LVDS off one at a time to see if I had a picture on either side. I finally fixed the reboot cycle by finding the error on the left side of the screen off connector CN 1301, and the TV would stay on. Further troubleshooting led me to the driver boards where...
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