Hi have a lg with no back light or sound a board voltages seem low I'm getting a really faint 3 flashing light on the front then it goes blue but that's really really faint this is the power board
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Last edited by adamp91gvm; 02-05-2014, 12:00 PM. -
Re: lg 42lg5000 no screen power or sound
how do you know there is no sound if the screen isn't visible and the correct input isn't selected? -
Re: lg 42lg5000 no screen power or sound
I'm getting from here from the 12v I'm getting 0.9v and from the 16.5v nothingAttached FilesComment
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Re: lg 42lg5000 no screen power or sound
Tried plugging hdmi in then goin trough source and all buttonsComment
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Re: lg 42lg5000 no screen power or sound
If I disconnect the y main my power goes up to right voltage so I think it's drawing the powerComment
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Re: lg 42lg5000 no screen power or sound
have you checked voltages going to the main board?Comment
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Re: lg 42lg5000 no screen power or sound
Yer I think I have sussed it y sustain is goosed ordered a new one
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Re: lg 42lg5000 no screen power or sound
This TV does not use a Y-sustain board. It's an LCD.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: lg 42lg5000 no screen power or sound
Lol well the invertor board the main oneComment
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Re: lg 42lg5000 no screen power or sound
How did you determine that to be at fault?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: lg 42lg5000 no screen power or sound
By unplugging things one by 1 then checking the voltage when I plugged that invertor in it was taking the voltage to the A board from 16.5v to 0.9vComment
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Re: lg 42lg5000 no screen power or sound
That COULD indicate a short circuit. Did you also check the 24V?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: lg 42lg5000 no screen power or sound
Yer it was getting 0v with the invertor in 24 with it outComment
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Re: lg 42lg5000 no screen power or sound
Good troubleshooting, would seem to indicate that is at fault.
Did you ever get time to troubleshoot 58"? Did you find that fuse blown or not?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: lg 42lg5000 no screen power or sound
cCheck for bent pins in the connector - post pic of inverter board.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: lg 42lg5000 no screen power or sound
The 58 inch is a sore subject ha ha it's still sat there I have 50 inch with exactly the same problem no picture at all seems there is no power getting to the bottom of the board I'm looking for a new board for it but can not find one any where I'm goin to have a good look at the board this weekLast edited by adamp91gvm; 02-08-2014, 10:26 AM.Comment
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I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.
I ordered a supposedly ‘new' Tcon board this time, and... -
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... -
Hello,
I have an HP 15-eh1070wm laptop that came to me for the same reasons I am starting this thread. The charging LED appears when the laptop power adapter is connected and the power LED appears when pressing the power button, but nothing appears on screen.
First thing I did was take off the bottom panel and remove the battery and then press and hold the power button for 30 seconds and then reinstall the battery and power on. The fan spins and this time, the back light illuminates and a brief message appears on the screen for about 1 second saying something along like,... -
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I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
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