When you remove the plug from the main board to the power board the back-lights all start flashing, what voltage should the BLU on/off be.
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Re: Samsung 50" TV flashing power light
0 research done I like it. Bl should be I believe 1.5-3v or so.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 !
https://www.facebook.com/Telford-Tel...7894576335359/ -
Re: Samsung 50" TV flashing power light
Is this BLU on/off the same as the Pl on/off, because when I check the circuit I get a dead short between the two pinsComment
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Re: Samsung 50" TV flashing power light
Is that with the Mb unplugged ?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 !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Samsung 50" TV flashing power light
Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem
Also model number of the tv please
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Re: Samsung 50" TV flashing power light
Thanks for the offer but all I wanted was an answer to the question.yes that was with the board laying on the bench.Comment
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Re: Samsung 50" TV flashing power light
Pffft. How would you suppose we should help you without any model number or pics of the TV ? Is it a LED or a LCD or what?
If it is a LED, Id be checking the LEDs in the panel first.
As for your question: I am not so sure you should be poking around that thing too much without knowing very basic things what PSon and BLon pins actually do.Last edited by CapLeaker; 09-26-2016, 05:44 AM.Comment
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Re: Samsung 50" TV flashing power light
I have worked on Radar systems and naval missiles systems and I have been fixing TVs for sometime but from time to time some thing new comes out that one needs some information on and this is the case.And in the first comment I said that when the Main Board is disconnected the LED are flashing.Comment
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Re: Samsung 50" TV flashing power light
So the backlights are flashing.
What is the power supply board part number? BN44-??????
Model number of the TV?
BL-ON (BLUON) is steady state DC. BL-ON is usually >2.5Vdc = ON, <1Vdc = OFF, BUT some of the SAMSUNG board uses 0.7Vdc = ON, <.2Vdc = OFF.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Samsung 50" TV flashing power light
Hi budm, backlights are flashing with the MB disconnected. power supply board is a BN44-00617A, Model number UE50F6200AKXXUComment
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Re: Samsung 50" TV flashing power light
Research how to test led backlights.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 !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Samsung 50" TV flashing power light
Hi Budm can you simulate the BLU voltage with 3 batteries, for test purposesComment
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Re: Samsung 50" TV flashing power light
take a 1k ohm resistor and jump 5V STBY to BLonComment
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Re: Samsung 50" TV flashing power light
Would be nice if someone said some thing " we do not know about this problem" or just go away or is this system not working anymoreComment
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Re: Samsung 50" TV flashing power light
easy for you to say... we don't even have a picture of your PSU so we have something to look at. I think you should know with 114 posts on your account, that we need pics. Other than that it's just guessing around.
Your TV is a LED. You may have a bad LED and nothing wrong with the PSU. In order to test the LEDs, you have to take the panel apart. There are tons of threads here about that.Comment
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Re: Samsung 50" TV flashing power light
Yes have taken the panel apart and have said before all the LED are working I can see the all flashing, I think it is the Power board but cannot find and diagrams, there is no bulging capacitors.Comment
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Re: Samsung 50" TV flashing power light
Does anyone have a diagram for a BN44-00617A, this is from a Samsung UE50F6200AKXXU television, or know where to get oneComment
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Re: Samsung 50" TV flashing power light
Check google or Toms site.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 !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Samsung 50" TV flashing power light
Have already checkedComment
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Hey everyone,
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I am attempting to test a samsung power supply board to verify the pfc ic is working. I am powering up the board with my isolation transformer. The board turns on fine but when I attempt to connect the ground for the scope probe, it trips out the isolator. I was taught not to 'float my scope' so I am wondering if I should test without connecting the ground lead or would that be asking for trouble? Not sure how else to test, I don't have a portable scope. I could plug direct to mains power but that would bypass the safety factor.
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