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Old 12-17-2023, 01:20 AM   #1
JASlinux
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Question Monitor flicker & manufacturer semantics


My Acer monitor flickers every time I start using it. Once it turns on, it works normally. This is a new problem, so it feels like the monitor is failing.

Finding the manual online, Acer asserts fluorescent flicker is natural:

Quote:
Due to the nature of the fluorescent light, the screen may flicker during initial use. Turn off the power switch and then turn it on again to make the flicker disappear.
Now, by "initial use" does Acer mean when the monitor is new, or could it mean every time I begin to use it, like the problem I'm experiencing?

The question is about expectations, whether or not I can expect it to die soon or more years of erratic use.
 
Old 12-17-2023, 06:16 PM   #2
michaelk
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My guess is the backlight is starting to fail probably sooner then later. Some backlights are replaceable.
 
Old 12-18-2023, 02:03 AM   #3
lvm_
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By initial use they mean the first few seconds of operation, have you never seen large fluorescent lamps used for lighting do it? Never seen it in monitors though...
 
Old 12-18-2023, 12:46 PM   #4
obobskivich
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This can also happen in CFL backlights when the ambient environment is quite cold - as it warms and stabilizes it should resolve with use (until you shut it down and come back later and it starts over again). Alternately, it could be failing - its basically a series of light tubes if its actually a CFL monitor (and its likely fairly dated as a result too - any newer monitors I've seen will have LED backlights because they use less power and thus better comply with energy conservation targets). May be time to consider an update.

An alternate idea, but less likely since you say you haven't seen this before: if you're using a VGA (analog) signal cable, it may be interference being picked up by the cable leading to visible 'noise' on the screen that can look like flicker (or 'ripple') in the picture. If you're hooked up via digital connection (HDMI, DVI, etc) that wouldn't be a consideration, but just yet something else to contemplate.
 
Old 01-05-2024, 02:39 AM   #5
JASlinux
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Quote:
Originally Posted by obobskivich View Post
This can also happen in CFL backlights when the ambient environment is quite cold - as it warms and stabilizes it should resolve with use

Alternately, it could be failing

if you're using a VGA (analog) signal cable, it may be interference being picked up by the cable

If you're hooked up via digital connection (HDMI, DVI, etc) that wouldn't be a consideration, but just yet something else to contemplate.
It's ambient here 65-70F inside, using this monitor both DVI & VGA not noticing the difference. One might be better though it happens using both. It works once on, a strange problem I have not encountered before.

It is not a newer monitor but I am suspicious something other than age is causing the failure, & since it eventually flicks on, every expectation is a gamble.
 
Old 01-16-2024, 12:33 AM   #6
JASlinux
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Lightbulb

I coincidentally met with a local family friend who worked in technology maintenance & he instantly replied, "It's the capacitors."

That level of expertise is always refreshing, but what I didn't get from him are lifespan expectations or if anyone bothers with repairs. 'Course monitors are cheap nowadays, but this one is still working like an old shoe. I'm using it now.
 
  


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