![lg wide monitor keeps flashing on and off the screen. side buttons have no effect lg wide monitor keeps flashing on and off the screen. side buttons have no effect](https://i5.walmartimages.com/asr/f2c7ecd9-716a-4eb0-aceb-1f31152c1485_1.f405e25a8f6ca16977ef630df261b0ed.jpeg)
- #LG WIDE MONITOR KEEPS FLASHING ON AND OFF THE SCREEN. SIDE BUTTONS HAVE NO EFFECT UPDATE#
- #LG WIDE MONITOR KEEPS FLASHING ON AND OFF THE SCREEN. SIDE BUTTONS HAVE NO EFFECT TV#
- #LG WIDE MONITOR KEEPS FLASHING ON AND OFF THE SCREEN. SIDE BUTTONS HAVE NO EFFECT FREE#
I opened the TV up a fourth time as I needed the part number on the mainboard and removed the main board entirely to check underneath to see if there were any scorch marks there.
#LG WIDE MONITOR KEEPS FLASHING ON AND OFF THE SCREEN. SIDE BUTTONS HAVE NO EFFECT FREE#
Obviously I'm not looking for an answer that is a definitive fix (as I can't find a definitive problem) and I'm not the type of person to pull a “well you said x and it didn't work” when it comes to free advice, so if you can give me your best reckoning based on prior experience that would be great. I have close up images of the scan drive boards too however they looked to be in good condition (and I assume that if they fail its game over anyway) any idea on how I should proceed now? The flickering seems to be happening more and more often (less than half an hour of running my TV tonight however it always starts up fine) should I just run it until it lets the smoke out and find out what failed? Or should I replace the main board which is also the T-con board as the boards which connect directly to the panel are completely fine. So I think (confirmation would be great) the T-con board may be integrated into the motherboard on my TV, I've stripped the TV down as far as I can go without taking off the panel itself.
![lg wide monitor keeps flashing on and off the screen. side buttons have no effect lg wide monitor keeps flashing on and off the screen. side buttons have no effect](https://venturebeat.com/wp-content/uploads/2020/03/immersal2.jpg)
#LG WIDE MONITOR KEEPS FLASHING ON AND OFF THE SCREEN. SIDE BUTTONS HAVE NO EFFECT UPDATE#
Update 26/05/20 Although a T-con board is being sold for this model number of TV in on ebay it must be mislabelled as the two LVDS cables on my TV go straight to the scan drive boards. I really don't want to buy a new TV (and if I do it won't be LG, I've owned this for just over 3 years and babied it, turning it off even when I leave the room for ten minutes (mainly for electric bill reasons) on the other hand my mother's Samsung gets left on overnight with no auto off feature and has been owned for about 12-15 years and its still great) so any help would be really, really appreciated. I own a multimeter (though nothing exceptional like a fluke) and have a bench PSU and soldering station so I can desolder and check suspect components and hopefully replace them. However if that's not the case I can open it up and check the boards for bulged/leaking capacitors and any components which have maybe burned up/otherwise gone bad. If anyone has any idea what this might be just from the description alone that would be great. There is a slight hum from the TV too (from the SMPS I assume), however I'm not certain if that was always there and I'm just noticing it now. The fact that there's a thin bar makes me think that there may be an issue with whatever is driving the display rather than a ‘simple’ LED issue. So I noticed that my screen was flickering last night (and it seemed to be fine today, until now), however it doesn't seem to be like the flickering seen in other videos showing screen flicker where the screen goes off and on like a broken fluorescent light (which seems to happen to TVs using LED backlighting like mine) instead the best way to describe it would be like a rapid pulsating where the screen dips in brightness and increases in cycles, it'll ‘pulsate’ maybe 20 times over a two second period then be normal for a second then repeat the process over again, the entire screen is still visible during this, at no point does the screen go black entirely (at least not for a duration visible to the human eye, I'll record it in slow motion and see if there's more than the usual 60hz flicker) this flickering is intermittent and at times the TV seems totally fine, except for a very thin (invisible at even 1.5m/6ft distance) horizontal bar near the very top of the screen which is more visible on the right hand side and flickers at the same rhythm as the entire screen.