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Re: samsung hpt5054 plasma no pic with sound
generally to test a fet with a multimeter you set it to 200 resistance and test with the red and black leads between each pin in all possible combinations and there should be more then 50 resistance between each pin (if the meter shows (1____) or something like that its above the range which is good.
After that you can test the FET's for diode readings, set the multimeter to diode (looks like --<|-- ) and try all combinations on the 3 pins of red and black (switching black with red should give different values for the same 2 pins). Your expecting to see about 2 or 3 combinations of order you arrange the red and black lead / which pins you test to give diode readings (anything other then 0.0000 or 1____ that you see on the display), 0.0000 is often a sign of a shorted fet , so retry that same order / pins with the resistance setting mentioned above.Fixed so far 12 lcd's , 1 plasmas, 5 monitors, 0 dlp's (plan to keep the dlps at 0). and 3 atx power supplies, and 2 motherboards.Comment
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Re: samsung hpt5054 plasma no pic with sound
Cheked these as instructed and all test above 1when set at 200
On diode setting 5500 is the only one without a short.
Also found short on d5001 and d5003 if that means anything
Anything else i can check on this board?
Also thanks for the responces. As a first year EE major i am learning a lot from this. Should help when i take my firstcircuits class next semester.Last edited by ducatilover; 04-15-2013, 09:32 PM.Comment
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Re: samsung hpt5054 plasma no pic with sound
Any ideas if this would be a good deal?
http://www.ebay.com/itm/Repair-LJ41-...item4170a2d0f4Comment
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Re: samsung hpt5054 plasma no pic with sound
It looks like a good deal. Coincidentally, I've conversed with that seller. He mentioned that his company uses genuine buffer chips to repair the Y-buffers, unlike some companies that use cheap Chinese chips. The company's located in California, and apparently it's run by some electrical and computer engineers.
Edit: Hmm, it looks like you can even purchase an extended warranty. Interesting.Last edited by capkid; 04-16-2013, 01:33 AM.Comment
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Re: samsung hpt5054 plasma no pic with sound
Debating on sending the buffer boards to the Ebay seller. Just concerned that if they get replaced and i have a bad display then I'm SOL. Any way to check the display before spending some $ on this thing?Comment
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Re: samsung hpt5054 plasma no pic with sound
I don't know of an alternative for checking the panel. The fault history of this model would point to the panel most likely being ok. BTW, I checked with a few eBay buyers who'd purchased from that seller upwards of six months ago, since I was curious about the longevity of the buffer board repair, and the two who responded said their TVs are still running fine.Last edited by capkid; 04-23-2013, 12:28 AM.Comment
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Re: samsung hpt5054 plasma no pic with sound
Not to worry you, but I have two of these HP-T5054 TVs; I just picked up the second of the two the other day. I blew the Y-Sus and upper Y-buffer in the first TV after I'd just repaired them, so the TV sat until I picked up the second one. I repeated the Y-buffer and Y-Sus repair on the second TV's parts, installed them in the first TV, and the screen was blotchy. I quickly pulled the power cord to avoid damaging the Y-Sus and Y-buffers. I then installed the repaired Y-Sus and Y-buffer in the second TV, and I got a normal screen.
The bottom line is that I believe the panel in the first TV is bad. I've checked out the Z-Sus, and it doesn't appear to have any issues. If you sense that something is not quite right after installing your repaired/replacement boards, pull the power cord immediately.Last edited by capkid; 04-23-2013, 10:13 PM.Comment
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Re: samsung hpt5054 plasma no pic with sound
If the display were to be bad could it blow the new y boards after replacing them?Comment
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Re: samsung hpt5054 plasma no pic with sound
That's what I suspect happened with my TV: The faulty panel was blowing the Y-buffer, which in turn blew the Y-Sus. Just watch the screen closely when you fire up the TV and pull the cord immediately if it looks weird. Chances are that your panel is fine, though.Last edited by capkid; 04-24-2013, 10:07 PM.Comment
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This specification for the Samsung Galaxy Book 2 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Galaxy Book 2 boardview and Galaxy Book 2 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...09-07-2024, 05:50 AM
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Moderator: I hope I'm not breaking forum rules or decorum by posting my original question a different way (my previous thread focused on the low vscan readings - but I'm thinking maybe that's not as relevant and won't get me as far as diagnosing as the fact that I now have no picture or sound.)
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We all of the sudden started getting a washed out picture and rainbow colored static/snow.
Based on research when we got a low vscan reading we decided to replace the y board and y buffers.
Now I get no picture or sound - TV turns on...10-21-2020, 01:27 PM -
The customer of this TV Heard a pop sound before it went dead.
The VS and VA voltages turn on imediatly and then slowly die off.
I got a replacement Y-Board (Large board on the left) from aliexpress and still no luck
If tested all the IC chipson the board all the way on the left by running meter along the connectors and couldnt find any shorts there...
I think ive checked most the capacitors for shorts as well as most of the diodes and mosfet/transistors on the big boards.
https://photos.app.goo.gl/KDyLcgB38Bh699Zr6
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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 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...
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