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TKF
Member
Last Activity: 07-26-2023, 12:04 PM
Joined: 10-16-2013
Location: Orl Fl
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  • TKF
    replied to Samsung BN44-00775A no Power No STB or Power lights.Help needed
    in Troubleshooting TVs and Video Sources
    Re: Samsung BN44-00775A no Power No STB or Power lights.Help needed



    [B]Update:[/B] Hope this info. can help others - [B]R J you hit it right on the head [/B] the top string was shorted all leds out, all but 2 strings had bunt Leds and those 2 strings were all good. Replaced all led strings, and everything worked got STB light and power lights and tv working again just to see a new Big Problem the screen had horizonal lines on the upper part and other parts had color issue so started checking the I reseated ribbins on the t con and Driver board on bottom...
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  • TKF
    replied to Samsung BN44-00775A no Power No STB or Power lights.Help needed
    in Troubleshooting TVs and Video Sources
    Re: Samsung BN44-00775A no Power No STB or Power lights.Help needed

    R J I was afraid it was a BL issue I remember reading somewhere about the protection in my testing Voltage i thought it might be MB do to the low reading on
    Pin 4 PWM-BLU -0.75v with MB connected I will report back when i get it apart and repaired
    Thanks again for your expertise
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  • TKF
    replied to Samsung BN44-00775A no Power No STB or Power lights.Help needed
    in Troubleshooting TVs and Video Sources
    Re: Samsung BN44-00775A no Power No STB or Power lights.Help needed

    Thanks for help R J I have to turn tv on with plug Not sure if your refiring to pin 1 on CNL802 or the inductor in front of CNL802 the voltage on pin1&2 with BL not connected 419v with MB connected it 452v on pins 1&2 all other pins 0 and with BL plugged in 0v
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    Last edited by TKF; 06-27-2023, 05:38 PM. Reason: adding info

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  • TKF
    replied to Samsung BN44-00775A no Power No STB or Power lights.Help needed
    in Troubleshooting TVs and Video Sources
    Re: Samsung BN44-00775A no Power No STB or Power lights.Help needed

    Updating my 1st post I was unable to edit it got timed out

    Samsung TV Model- UN60H6203AFXZA. No STB or Power lights
    Power Board - L60H1 EHS BN44-00775A - Main Board- BN97-08810A 0013

    Things I've tried so far, I took voltages with everything connected I got only 1.5v at STB/On pin,
    I disconnected all connections except Power Board and got voltages,
    Then checked voltages with different combinations of boards connected and disconnected.
    IdentifyBox CNM803-pins...
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  • TKF
    started a topic Samsung BN44-00775A no Power No STB or Power lights.Help needed
    in Troubleshooting TVs and Video Sources

    Samsung BN44-00775A no Power No STB or Power lights.Help needed

    After a lot or reading and searching I suspected PB Power Board#BN44-00775A but after voltage tests I'm not sure what they indicate or point to.
    1st I unplugged MB and left only BLs plugged in to see if I got light No BLs come on. So I suspected Black lights but then tested BLs with BL tester they came on. I suspect a short somewhere I started testing at the STB pin 8v/on13v I get 12.80v note no stb lights on
    I noticed with only MB plugged in MB showed signs on life saw red light on not sure from where and it started warming up.
    Thanks for any help or ideas or testing suggestions...
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  • TKF
    replied to Samsung ln3251D picture problems
    in Troubleshooting TVs and Video Sources
    Re: Samsung ln3251D picture problems

    Any more testing help would be greatly appreciated as stated above I replaced t con board tried a different main board got 2 seconds black not sure if that pointed to the problem or it was just a defective replacement board I reinstalled original main board could any components on the main board or inverter board be causing an issue like the one I'm having if so any help in troubleshooting those would be appreciated.
    As you can tell by my posting I'm a newbie when it comes to TV troubleshooting and repair .
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  • TKF
    replied to Capactior Qustions help please
    in General Capacitor Questions & Issues
    Re: Capactior Qustions help please

    Thanks for the help Almighty1 I just wanted to make sure that the FC series caps are suitable for Power Boards I have already installed 2 FM caps on this board trying to stay with Panasonic the closest matches I could find to the FM and FR series was the FCs.
    Thanks again
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  • TKF
    replied to Capactior Qustions help please
    in General Capacitor Questions & Issues
    Re: Capactior Qustions help please

    I replaced the 2 caps but didn't help I'm going to replace the all of the caps which I should have done to start with. I can't find some of the caps in the Panasonic FM or FR series but there's some in the FC series from the data sheets I can't see a lot of differences other then a wider Temp range and Impedance is a little lower for the FM an FR

    My question is would the FC work OK, or is there better choices.
    Thanks for any help
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  • TKF
    replied to Samsung ln3251D picture problems
    in Troubleshooting TVs and Video Sources
    Re: Samsung ln3251D picture problems

    Further help needed I have tried a different T-con board no change tried different main board (presumed good) installed it and power on back light flashed on for 2 seconds and went off pull that board back out and reinstalled original then tested all voltage on P/B to Inverter and P/B to main board all looked ok except for pin #5 on cnm804 24v detect reads only 5.3v not sure if thats normal any help on what to check next would be greatly appreciated.

    Link for PB BN96-03775A schematic I used for comparison
    [url]http:/...
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    Last edited by TKF; 09-25-2014, 03:19 PM.

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  • TKF
    replied to Samsung ln3251D picture problems
    in Troubleshooting TVs and Video Sources
    Re: Samsung ln3251D picture problems



    Shinju Thanks for the reply not that I noticed, I know how to get in service mode but don't know what to do from there as far as the test to do Thanks for any help...
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    Last edited by TKF; 09-15-2014, 05:21 PM. Reason: adding

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  • TKF
    started a topic Samsung ln3251D picture problems
    in Troubleshooting TVs and Video Sources

    Samsung ln3251D picture problems

    Has anyone come across this before,or have a fix for it, I have replaced the
    t con board nothing changed, the video isn't effected doesn't seem to be a power issue nothing visible on boards could the main board cause and issue like this....
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  • TKF
    replied to Help needed after new inverter boards
    in Troubleshooting TVs and Video Sources
    Re: Help needed after new inverter boards

    Thanks Tom they started it up today it started like it was new(scratching my head)seems if it was panel tab issue it would do it every time until it heats up
    I'm wondering if the inverter boards he replaced might have a problem.
    What started this was a blown smd fuse on the slave board I believe, does anyone have any specs for that fuse its a littlefuse 8A not sure if its a very fast-fast or slow blow,it has no other marking,my thinking is repair the old inverter board and put it in if the problem returns.
    Thanks a...
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  • TKF
    replied to Capactior Qustions help please
    in General Capacitor Questions & Issues
    Re: Capactior Qustions help please

    Thanks for the help Steve ,Bud got them ordered today
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  • TKF
    replied to Capactior Qustions help please
    in General Capacitor Questions & Issues
    Re: Capactior Qustions help please



    SteveNielsen Your right I mistyped it should read 470uf 25v and the ripple should read 1790 I copied those specs from the data sheets would they work ok for replacements
    Thanks for the help...
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  • TKF
    started a topic Capactior Qustions help please
    in General Capacitor Questions & Issues

    Capactior Qustions help please

    I've got 2 bulging capacitors on a Samsung power board they are Capxon I've picked a couple of Panasonic ones to replace them could anyone advise if the ones I picked are suitable replacements or any suggestions
    Bad ones capxon
    1000uf 10v,10x16size1040ripple,0.076inpedance
    470uf 25v,10x16size1200ripple,0.076inpedance
    Replace with Panasonic
    1000uf 10v,10x16size,1.790ripple,0.026inpedance
    470uf 10v,10x16size,1.790ripple,0.026inpedance
    Got from these data sheets
    [url]http://www.paullinebarger.net/DS/Capxon/[/url]
    [url]http://www.paullinebarger.net/DS/Panasonic/[/url]...
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  • TKF
    replied to Help needed after new inverter boards
    in Troubleshooting TVs and Video Sources
    Re: Help needed after new inverter boards



    Thanks Tom for the quick reply I have tried twisting the panel from reading treads it has no effect on picture,not sure if it a Lg panel but will have to try to get it apart and check tabs...
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  • TKF
    replied to Help needed after new inverter boards
    in Troubleshooting TVs and Video Sources
    Re: Help needed after new inverter boards

    Update I reseated LVDS and ribbon and main board cables again and powered on tv and only had faint horizontal lines at first that went away within a min and screen had no issue the rest of the day, then yesterday started up and lines were back video on top of screen was fine bottom part of screen had freezing and bad refresh rate with in 2 mins cleared up and didn't return till shut down any ideas on what or where to further troubleshoots this issue would greatly be appreciated
    Thanks
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  • TKF
    started a topic Samsung TV BN96-03775A power supply Cap suggestions needed
    in Troubleshooting TVs and Video Sources

    Samsung TV BN96-03775A power supply Cap suggestions needed

    Not sure if I'm posting this in the right forum please move if needed

    The TV this PS belongs to has some pictures issues while investigating that I found a couple of bulging caps on the PS, has anyone had experience in recapping on this PS and if so would you have a parts list as in what sizes and brand you would recommend from experience.

    Thanks for any help and suggestions
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  • TKF
    replied to Help needed after new inverter boards
    in Troubleshooting TVs and Video Sources
    Re: Help needed after new inverter boards

    Adding to the last post that bar of lines moves up and doubles some times and the screen seems to refresh and then freeze and starts to refresh again, after a lot more searching haven't been able to find anything like it or similar to it, could something on the main board be causing this most of the T con issues I've found has to do with no picture or vertical lines and bars.
    Thanks for any help
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  • TKF
    replied to Help needed after new inverter boards
    in Troubleshooting TVs and Video Sources
    Re: Help needed after new inverter boards

    Hi Tom thanks for the help I checked the LVDS and ribbon cables LVDS cables didn't change anything,as for the menu it shows top and bottom, on screen I also reseated ribbons no change I tried unplugging each ribbon cable one at a time,when the one on the right was unplugged half the screen went white and the other black when doing the left ribbon cable it had no change the no signal screen stayed up other then one side got a little darker....
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