Re: LG 55LD520 wont turn on
Post 11 in the thread I keep asking you to read.
Post 11 in the thread I keep asking you to read.
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Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740 -
Re: LG 55LD520 wont turn on
Just to be clear the little black things by the capacitors are the mosfets? Also do I need to remove them to test them?
Pin 1-2 1.9
Pin 1-3 1.9
Pin 2-3 0.7
It is the same across all of them I tested the ones on slave 2 and nothing happened on the multimeter.Last edited by burner6999; 07-28-2014, 02:32 PM.Comment
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Re: LG 55LD520 wont turn on
Mosfet have a Q number. 3 legs and a tab. The middle leg is electrical the same. The tab and under side are difficult to remove because it is also the heat sink. They are in parallel so if one is shorted all will show bad. Damaged mosfet is not always obviousComment
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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: LG 55LD520 wont turn on
I had the meter set at 200ohms. I went ahead and ordered a new board. I will post back and let you know if it works. Thanks guys.Comment
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Re: LG 55LD520 wont turn on
OK, they are shown as shorts, thanks.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: LG 55LD520 wont turn on
Just wanted to let everyone know that I got the board today and it solved my problem. Thanks to everyone that helped in finding a solution.Comment
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Re: LG 55LD520 wont turn on
Thank you! You guy/gals in this forum have fixed another TV! I had two bad FETs on my slave 2 board. I pulled them off and the TV powered up as normal. Now I just have to find a way to order the replacement parts.. thanks to you all!Craigslist Picks & Fixes
2 ea - Samsung 52"
Samsung 60"Comment
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Hello, I came here after finding some similar questions asked on other monitors and hope someone here can help me get an ancient Viewsonic VP230mp (23" 4:3 LCD) back to working condition.
First a little background, I have a background in computer and electrical engineering, and I'm smart enough to know I know nothing about LCD displays and how they work. For this topic I'm as green as they come.
When the display is turned on the viewsonic logo displays in the uppper left for 2 seconds then the screen goes black, the power LED is green (on) and when a computer is connected... -
To all the members here...
Let me tell you a little bit about what happened to my laptop (MSI GF63 THIN 11UCX model: MS-16R6) that “maybe” you know how to solve this problem.
So before this problem happened, my laptop was running smoothly. When I wanted to restart my laptop, it looked fine at first. But after I waited for this restart process to take a long time, until finally I panicked (because the restart process did not finish plus the laptop screen only showed a black screen), I immediately pressed and held the power button to force the laptop to turn off. But... -
Hello, I have an Acer Aspire 4520 from a couple of decades ago and I want to repair it solely for nostalgia.
It happens that when I turn it on after having been disconnected for a long time, it turns on without problems, it tells me that the BIOS has been reset and that it will load the factory settings, if I tell it to continue, the computer turns on and everything works fine.
The moment I turn it off and want to turn it back on a second time, or restart it and try to start it again, it no longer gives an image, and it no longer responds.
If I remove the... -
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.... -
i got this laptop with no power issue....i flashed the bios and laptop can turn on and use normally....but when i shut it down and rest for few minute (2-3 minutes), it wont turn on....i have to flash bios again...any idea what is the problem?...when i shutdown and suddenly press power button to turn on, it will turn on normally....problem happen when i rest the laptop 2-3 minutes after shutdown, it will not turn on....i need to flash bios again
board number VIUX1 NM-A091 REV:1.0...
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