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Re: Dim screen LG 55LD520
Thanks, if I need to do it again I will do it that way if I can figure out which pins are which. In the meantime I replaced the burnt board and bad jumpers. The Tv worked great for about 10 minutes then the screen went black. Just my luck. Unless someone has a suggestion I'm gonna finally resort to giving a call to the guy who sold me the tv and see if he wants it back. ThanksComment
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Re: Dim screen LG 55LD520
Any ideas why the TV would have worked fine for about 10 minutes after replacing the master inverter board and jumper and then turned off unexpectedly and won't turn back on? Thank you!Comment
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Re: Dim screen LG 55LD520
Check for shorts on all four boards. They used two different types of mosfets that switch positive and negative to make AC to transformers. If any short you will see it across the capacitors on the electrolytic caps/ disconnect all the jumpers between the boards then check for shorts to help narrow it down to the board. Then try to see what mosfet has the lowest resistance to ground. Damaged mosfet is not always obvious and its trial and error on locating the shorted mosfetComment
only needed a few wires as you can tie any 24v together into one wire and gnd into another etc.... just use a higher amp wire and bridge the pins together at the board with solder
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Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!
My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.
This time the original cable broke too close to the screen, it can't be fixed without tearing the screen... -
Hi,
I have a iphone XS that came in for a screen replacement, the screen was badly cracked, and inside missing scues, on the back of the screen still the blue protector, the screen was a LCD. So we replaced the screen and all good, installed the screen and we noticed that pressing the screen with a bit of force but not excessive, the phone dies. After plugging the charger it turns back on, but again if you press it it dies. I open the phone again, and I can't see anything major, with the phone open, if I press on the logic board, battery, charging board, or even putting pressure on... -
Hello everyone, I’ve just been given a Samsung UE55JU6800K smart tv as it had white spots on the screen due to the led lenses falling off. After refitting them & putting the tv back together I thought it was a nice easy fix for a free bedroom tv , then I tried it before screwing the back into place. I realised that the right side of the screen was darker than the other side, I removed the screen again as I thought the backlights had failed but they are fine.
I put the screen back in place & turned it back on . The screen seemed to be ok again but different screens on the same... -
I'm currently trying to diagnose and fix my Vizio TV (Model M50-C1). I've tried a number of different basic solutions, but I'm trying to determine if my issue is currently a failing panel, T-Con board, or main board (or something else entirely) and whether or not it is worth my time to fix it. Details of the issue and what I've tried are below as well as why I think it is either a bad panel, T-Con board, or main board.
The Issue: The TV will be on and working fine but after the TV is on for ~5-10 minutes the screen will freeze (with sound continuing) until the TV reboots itself. While... -
i have an ipad pro 9.7" (1st gen) A1674 where i replaced the screen, but never attached the screen to the frame/chassis (glued down) due to the ipad being previously dropped so the new screen would never fit in the frame properly. so i need flex/bend the chassis to eventually fix the new screen in properly. so i temporarily just applied blue tape around the edges of the screen to keep it in place. when watching videos with the ipad the screen started flicker, so i though maybe the new quasi cheap amz screen i purchased was going out. so i disconnected then reconnected with power still on,...
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