Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
here are pictures ,ihope they will help
here are pictures ,ihope they will help
Attached Files
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
The connector to the right has PSON and VSON, does that go to the main board?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
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
I see the connector with PSON and VSON,It goes from PS board to control board.Do you still want me to check for polarity?Comment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
I'm thinking that it's going to be difficult to test it due to the odd design Samsung have used. I think the main board is the fault. There appears to be a PS-ON on the connector (no VS-ON though) going to the main board. Can you check what voltage appears on there?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
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
I checked PS-ON pin at the PS BOARD WITH POWER PLUGGED IN ,iGET LESS THAN ONE VOLT. It changes a little .096 to.149 when it clicks.Comment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
That's with the main board disconnected though? Can you try with it plugged in?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
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
I tried both ways,the readings i gave you are with it connected,without it connected I get constant .664 and it doesn't click when disconnected from PS boardComment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
Well, the reading is unexpected. Can you check what the PS-ON is doing on the connector going to the control board?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
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
The ps-on on the connector going to control board,with it connected and power on it has .000 to.9 as it clicksComment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
I checked all the pins at the ps board on the connector going to main board,with power applied,I did not have power on any of them. I did the same on the connector going to control board,i had no power on them eitherComment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
What range do you have your multimeter set to?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
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
I HAVE BEEN CHECKING VAC,SHOULD I BE LOOKING FOR DC voltageComment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
Yes, DC voltage.Comment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
And use 20VDC range.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
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
I checked ps-on on both connectors,on main board it's 0.00,on the control board it's 0.00to0.20Comment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
That is not right at all. I suspect a problem with your meter or you are not probing correctly. What are you using as ground?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
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
first i did get a better ground,screw on corner of the board.I disconnected the connector to main board,with power on ,i checked PS-ON PIN I have constant 3.8vdc with it connected it goes from 3.34 to .245 to OL THEN CYCLES OVER AND OVER THESE NUMBERS. With connector to control Board connected PS-ON PIN goes from .244 to OL as it clicks,with it disconnected it goes from 3.34 to .245 to OL then it cycles thru over and over.I hope you can understand what i am saying.Comment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
That makes more sense. This tells us a LOW signal turns the power supply on. So, get the resistor and put it from PS-ON to RTN or GND (whichever is present.) Then do the 3-4 jumper with LVDS removed from the control board, and see if test patterns appear.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
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
when i install the resistor, i do keep the main board connector connected.what return do i connect to ?,is the test pattern i am looking for on the tv screen ?Comment
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Re: SAMSUNG HP-T5054 will not turn on,clicks when power is applied to it
I checked all the fuses again , the fuse in the center of the power board was blown,I replaced it when i connected power and turned it on it blowed again.Comment
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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.... -
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 everyone,
I am dealing with the problem of turning on and off my Dell e7470 notebook.
The battery charge light is solid white, I press the button, the power indicator and the light on the button are solid for 1-2 seconds and immediately turn off.
The system does not turn on, there is no post.
I removed the RAMs and changed them, changed the battery, RTC battery, AC adapter, removed them and waited, tried again, it does not turn on.
The problem continues in the same way.
I tried to turn on the Fn key, nothing came to the screen.... -
Hi All,
Need help.
I have a samsung un60j620dafxza led tv. When I plug it in it has no display, no sounds, and no standby lights.
So I opened the tv and disconnected the power to the mainboard and the backlight powered up. This according to many people says that this is a mainboard
problem. I checked the voltage coming from the stb and I read 1.3 volts on pins 1,3,5 and 7 which are low volts instead of 13 volts which i think the lcd panel
might be drawing too much power from the power supply that it prevents the right voltage going to the mainboard.... -
Hi. First time post. I've scoured the previous forums looking for info - there isn't much for my model
UN65MU8000FXZA
We had a power outage. Everything plugged into the Monster surge protector seems to be fine except my Samsung TV. It was dead when the power came back to the house.
Here's what I've looked at:
Unplugged main board from power supply - BACKLIGHTS COME ON.
Ordered new main board - still didn't work. Not sure if used MB was DOA
MAIN BOARD = BN94-12295K
PSB= BN44-00912 L65E8NR_MHS
There...
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