It's in my second post here already, actually, though I perhaps could have been more clear about it...
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That lil skinny board… hm… I would go a different direction and force the backlights on without the main board and see what that gives. Also involve heating and freezing to see where it acts up.Comment
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Well, don't know. If I really start with stuff like that I think there is a chance I break the monitor for good, so I'll probably just go through with replacing that poly cap first. It's also annoying to try and operate the monitor with the cover off, the cables are pretty short. I also have no experience with trying to take apart an LCD panel. So I'd really be poking in the dark here.
The one thing that changed since I made this thread is I barely ever see it flicker now, it's just mostly constantly dim now. About 40% or so when set to 100%, and it's very tiring to look at. Looking back, the measurement I first did on the poly cap was 0.32 ohms, now it was 0.44 ohms. This is speculation, but maybe the cap is deteriorating and this is causing the light output to further diminish. Because before, it could operate at high brightness for a short while, or at least during flicker. And for more speculation, since the CX01 cap on the power board was bad, maybe it passed too much ripple and caused the poly cap to prematurely fail.
I have also considered the driver chip on that sub board - BD9264EFV. Oddly can't even find a datasheet for it however, even though it does appear to be in stock in some places. But if I knew what to measure on that thing, or even what voltage should be at the poly cap, maybe that could be of use.Comment
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look at the DIM signal and input power to the board and output voltages on each LED string on the skinny board and graph it. See if something changes. No problem on the forcing on the PSU and backlights, but it does rule out the main boart as the DIM signal comes from there. So you're in for measuring voltages at certain points and graph it or note it down in a chart. hopefully it will tell a story and then we go from there when we got that data.Last edited by CapLeaker; 08-25-2024, 07:51 PM.Comment
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Hello,
The monitor started off showing flickering thin (1 pixel) lines horizontally every say 3mm..
They are black on the right and gradually fade to nothing on the far left.
They start either after 5 mins or up to 2 hours after so annoying for testing.
They flicker continuously very fast! With a slight pause milli-second every second.
Initially I cleaned the LVDS cable and connected to the T-Con and then it worked fine for 3 weeks but not sure if this was just co-incidence.
I tested each half by removing the first the left flex from... -
Hello,
I have an Eizo SX3031W monitor and after a period i had problems with the tcon board. I did reflow, it went well for a while after but the problems appeared again. The second reflow attempt was a failure, the tcon board stopped working. In the meantime, I bought a perfectly functional Samsung 305T monitor from which I took the tcon board and installed it in the Eizo monitor. Since I turned on the monitor, the blue color appeared in the background instead of black. And also in Windows, appears blue instead of black. I tried various settings from the monitor and driver settings but... -
Greetings everyone,
I have a HANNSG Hi221 monitor that exhibits two seconds to black issues (backlight goes off, display is still on as confirmed by shining a flashlight on it) with some additional oddities...
The monitor failed on me with a standard "2 seconds to black" some time ago prompting me to initially replace most of the electrolytic capacitors (some of them were bulging/leaking).
Things kinda sorta worked for a night, then the problem returned along with some flickering and "buzzing" noises.
Upon closer inspection... -
Hello,
AOC LV243XIP 23.8 inch Monitor screen flickering after power on monitor within few seconds and image disappear, if power off and on again then then image come back and again disappear within few seconds, i had checked all capacitor which seems ok to me, i have doubt something wrong with LCD board and mainboard is ok, i don't have other same monitor so i check and verify either LCD have issue or mainboard,
shall highly appreciated any hep to fix this monitor,
PS. i had attached pics and short video for reference,
Video Youtube Link: https://youtu.be/z9hIq7Ujj... -
Good evening, gentlemen.
I have a problem with my monitor. It turns off after a few seconds or flickers. Shining a flashlight on the screen doesn't show any image, so I guess it's not the "2 seconds to dark" I read in the forum.
To turn it back on, I have to press the power button twice. Then after a few seconds it turns off again or flickers. See video.
https://drive.google.com/file/d/1L6S...ew?usp=sharing
Things I tried
- Bought a new AC adapter thinking that was the problem but the problem...
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