Re: samsung ln46a540p2fxza no power
same reading
same reading
-
-
Re: samsung ln46a540p2fxza no power
23 transformers. i am using Fluke 113 set on vcheck autoComment
-
Re: samsung ln46a540p2fxza no power
I used another tester and still getting the same amount of volt.Comment
-
Re: samsung ln46a540p2fxza no power
Hmm The fluke can measure to 4 places - please can you try a couple of the transformers again with the meter on manual 20 volts( or 10 volts if you can set that as a range) and also if you can set it to record the maximum
voltage during the test.
From the video it suggests we are looking for less than 1 for the good ones and 1.25 to 3v for bad ones.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
Re: samsung ln46a540p2fxza no power
You are only getting 1.8V on the both ends of the fuse of the T-CON board? If that is the case, then it is not right. Black probe on the chassis?
I still like to know if the backlights do stay on.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
-
Re: samsung ln46a540p2fxza no power
i try with another meter and still not getting reading from those that i already especifyComment
-
Re: samsung ln46a540p2fxza no power
sudenly the tv start making the cliking sound againComment
-
Re: samsung ln46a540p2fxza no power
when i tested i had the negative in the chassis and yes the back light was still on.Comment
-
Re: samsung ln46a540p2fxza no power
How long do the backlights stay on for?Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
Re: samsung ln46a540p2fxza no power
As long as i leave the tv on.Comment
-
Re: samsung ln46a540p2fxza no power
So right now we need to look at the t-con power source, it is only 1.8V, I would advise considering a replacement of the main board as that is what switches power to the T-con on and off. Unless you wish to dive in, maybe a bypass (straight to 5V or 12V) would work, if you don't mind some screen flickers when TV first turns on.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Re: samsung ln46a540p2fxza no power
Oh ! I thought they were going off
So all the bulbs must be ok - Have you got a source connected?Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
Re: samsung ln46a540p2fxza no power
Yes, a dvd is conected and running. Tom, buying a board will not help me, i want to learned. Lets do it.Comment
-
Re: samsung ln46a540p2fxza no power
Part number of main board please. Will be indicated next to "PBA NO". Not the same as "PCB NO".Last edited by tom66; 01-14-2013, 03:45 PM.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Re: samsung ln46a540p2fxza no power
Board LabelAttached FilesPlease upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
-
Re: samsung ln46a540p2fxza no power
bn41-00975b main boardComment
-
Re: samsung ln46a540p2fxza no power
That's a PCB number, we're looking for a PBA number. BN96-xxxxxx or BN97-xxxxxxPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
-
Re: samsung ln46a540p2fxza no power
I posted a picture of it? BN97-01985v and other numbers I thought may help ^^^^^Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
-
Re: samsung ln46a540p2fxza no power
that is the same number than mineComment
-
Re: samsung ln46a540p2fxza no power
the one you has posted is the same one i got bn97-01985vComment
-
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
Hi all,
TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!
I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!
A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about... -
Samsung UE75MU7009TXZG Endless Power Cycle
Hi everyone and thanks in advance for any help I might get here
My Samsung TV is about 4 years old. The exact model number is UE75MU7009TXZG.
About half a year ago I started seeing occasional green frames pop up while watching movies. I mean literally green frames. Not the image turning green, but the entire screen turning green for a split second. This happened maybe once or twice during a 2 hour movie. So no big deal, but clearly something was not quite right.
Since a few days, the TV won't turn... -
Hi All,
First time posting here ... my name is Kevin but my friends call me Journey.
I have a Samsung 75" LCD model UN75RU8000FXZA that I don't remember the original fault other than it wouldn't power up anymore.
After it sat for many month's I decide to look at it again. The motherboard seemed to have power regulation issues. After much fussing I decided to just get a new MB.
It came a few days ago and I installed it now just cycles the power relay on and off ... when on the backlights light up and then dim and then relay kicks off and the whole things starts again....
Comment