Re: Samsung PN59D8000 Nothing After Move to Basement (Success)!
So received and replaced the SMPS and TV is now fully functioning! Thanks dick_barton for your assistance and a big shout out to the community for a job well done!...
deeMatrix
Member
Last Activity: 11-30-2020, 09:00 PM
Joined: 11-18-2020
Location: Matawan
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Re: Samsung PN59D8000 Nothing After Move to Basement
Hi dick_barton, Happy Thanksgiving. When I power set on PS_On goes from ~3.3v down to ~.2v and VS_On goes up to ~3.3v but quickly goes back down to 0v as though it was shut down or something (potentially by logic board)? BTW, I ordered the SMPS so we'll see what happens as had green blinking LED on logic board so figured start with the SPMS first. Can always return and get the logic board which is actually a lot less expensive if turns out that SMPS is not the issue....Last edited by deeMatrix; 11-26-2020, 05:51 PM.Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
This is interesting. In light of what you have seen is this often on the power supply board (SMPS in this case)? Another thread I saw on the site talked about a similar problem back in 2017 which turned out to be partially the SMPS, at least for the power up aspect so thinking ordering and replacing that may be worth a shot. Not sure if the logic board also makes sense but do get the 3.3v on VS_On initially which the logic board initiates and the green LED light so likely just start with the power board. Thoughts on this...Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
Thanks Diah for your input. I will try your suggestions. As an FYI, the basement has a dehumidifier and roughly around 50rh most of the time although there were a few days when it went up to 60rh before we ever turned the set on....Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
dick_barton, first off I want to say thanks once again for all of your assistance. I did the above Fast Track Manual step and got nothing on display so basically the same.
Subsequently, I left the main power cable disconnected with the short "Power On to Circuit Ground on Power Connector" and also disconnected the logic board and Y-Main board so basically only had the SMPS powered on.
I then went and tested all the various voltages as rated on the various connectors which were spot...Last edited by deeMatrix; 11-23-2020, 09:57 PM.Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
Thanks. I have the Fast Track Manual and did the initial "Vital Signs" which didn't help much but didn't do the "Activating Power & Logic Board Test Patterns without Main Board" though yet so perhaps that might be next logical step to see if can rule something out....Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
I posted the pic of the TV back and the X-board marked with red arrow/circle indicating the one test point with only .6 Ohms resistance with power disconnected. Can post additional pictures as needed. Thanks once again for any potential insights....Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
So had the SMPS power, as well as Y-board and X-board power connectors disconnected and checked resistance at all the test points on the various boards.
All points registered various amounts of resistance except for one point on the X-board which was .6 Ohms (multimeter was set to 200 and display read 00.6. Any multimeter higher Ohms setting displayed 0.00). Not sure if this indicates something potentially wrong with the X-board or is .6 Ohms ok?...Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
I had the power connection to the Y-board which connects to the X-board so all wiring was in place but only checked the VA and VS test points on the power supply board. I need to check additional locations on Y and X boards?...Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
Got ~5550 ohms resistance for VA and ~40000 ohms resistance for VS. Thoughts? Thanks...Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
Thanks dick_barton once again for your input. I only removed power connector from the Y-board and X-board one at a time and checked VA and VS voltages but no difference (not even briefly). I see the "Fast Track Troubleshooting Manual" indicates to "use ohm meter to measure resistance wile disconnecting Y-board and X-board supply feeds one at a time". Is this an additional step as unclear on what to do here? Thanks in advance....Leave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
Any thoughts anyone? Would really appreciate it.
-deeMatrixLeave a comment:
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Re: Samsung PN59D8000 Nothing After Move to Basement
Thanks for your response. No VA and VS did not shoot up at all....Leave a comment:
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Samsung PN59D8000 Nothing After Move to Basement
Hello Folks, thanks in advance for any guidance you may be able to provide.
Moved 59" Samsung plasma that was working flawlessly to basement to make way for new TV. Didn't turn on for several days but when did got nothing. Standby LED was on and did react to On signal but no sound or picture. Here's what we got when doing some minor readings:
Nothing of any concern noticeable on any boards or capacitors.
Standby ~5.3V
PS_ON ~3.3V
PowerON ~3.3V and goes down to ~.2V
VS_ON 0V up to 3.3V but then quickly goes back down to 0V
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Re: New Members - please post your introductions here
Hello folks, like to "try" and fix things now that I have some free time after retiring from IT lolLeave a comment:
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