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My Dell ST2010f monitor is very dim. What might be the problem?

When I try to turn up the brightness, it only flickers slightly and the brightness does not increase. It otherwise works perfectly. Could this be a bad transistor? What other possible repairs might it need?

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  • Dell Master
  • 5,597 Answers

2009 LCD monitor , 11 years old. and fails on all PCs I am sure.
all have CCLF black lamps, 99% are dead, or dim or even yellow tinged.
ok posted vast times this answer,
if the OSD brightness setting fails then....
the full story is here, 2010 is the first years of LED back lamps
you dont have those.
the CCLF lamps are bad, you can replace them or
buy never LED back lamped monitor, and frankly costs less.
https://www.manualslib.com/manual/1015803/Dell-St2010.html#



can I assume you turned on any monitor
pushed the OSD menu button of front of iT
then navigated to the brightness OSD section
and it's already fully high.,
yes, then that monitor has bad CCFL backlamps.
they run on 300vdc and the main board inside does that.
the go dim, most of them are now, or dead.
the have 20,000hr life span , very very short lived
compared to new LED monitors, very low life.

Posted on Nov 30, 2019

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
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Posted on Jan 02, 2017

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Geekman

Chris Hingee

  • 32281 Answers

SOURCE: My laptop, hp compaq nx6110 has a screen problem. Its dim

The problem could be a faulty inverter or the backlight fluro light lamp. The inverter is easier to replace than the fluro lamp.
Google the WEB for replacement parts and instructions on replacing the lamp. There are quite a few helpful sites for parts and repair instructions.

Posted on Feb 26, 2009

Anonymous

  • 1 Answer

SOURCE: Monitor problem

Este problema lo resolvi reemplazando el regulador que alimenta al eprom , es ese chip pequeñito de 8 pines , si tienes un E50 ibm es el IC 604 que forma parte de los componetes de la fuente de poder y esta ubicado al lado del chip IC 202 .

Saludos y suerte a todos.

Posted on May 28, 2009

Buddy Mcsparrin

  • 1684 Answers

SOURCE: dim monitar with flickering screen

Hello,

The problem can be caused by 1 of 2 things either your power supply is going out or the backlight bulbs are going out. The most likely cause is the power supply. If you are willing to do a little soldering you should be able to do the repair. If you go to our web site at: www.ccl-la.com/badcaps.htm We have a section on monitor repair. Look under the Samsung 930B it is the same as your monitor.
If you don't want to do it yourself we do offer a repair service, email me if you are in need of that.

I hope this helps.

Buddy

Posted on Aug 05, 2009

IQUIT

  • 3940 Answers

SOURCE: Dell 2005FPW Monitor Flicker problem

The flickering is most likely the florescent backlight having a hard time starting, Just like in a light fixture, as it gets old, it takes longer to warm up to get full functionality.
If under warranty, contact Dell for a replacement, if not, then when it becomes untenable, replace the monitor. Prices are dropping drastically, an new 20 or 22 In can be bought for about $150 or less

Posted on Aug 09, 2009

Cupofcoffee

Brian Abrahamson

  • 1 Answer

SOURCE: Monitor flickers unless brightness is at 100%

Try monitor menu select Memory Recall and press that, should clear right up

Posted on Jul 08, 2011

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Dell s2309wb flickers a bit and then turns off at any brightness setting under 73%. After turning off and on, shuts off again after a few seconds. 4.7 year old monitor.


older post DELL says its 10 years old made in 2008
yes,
did you test this monitor unplugged on PC using the OSD screen
for 10 seconds, each power on OSD works.
see if 50% brightness works, if yes, the PC has problems.
seems you did and did not test monitor on other PC
and did not test your PC on other monitor,.both simple tests.

you are now speculating that one brand is better that another,
Viewsonic is best, HP and deLL< others not so.
what you failed to do is test your PC with known good monitor
and test the monitor on a known good PC.
2 tests. that yell truth.

Id go Viewsonic, we have many here, not one failed ever.
2010 or newer,
back in before year 2010 LED monitors they had JUNK monitors.
with weak low life, CCFL tubes inside, as YOURS DOES.
all monitors had that then, its not maker name issue at ALL.
here is how I discover truth,
1: I PRETEND TO BUY THE MAIN BOARD IN YOUR MONITOR.
AND LOW AND BELOLD CCFL H3LL IS THERE,
  • go dim,
  • go yellow on white pages.
  • strobe.
  • totally crazy random works or not,
  • blinks
  • will not dim right.(gee they are now old and weak)
  • last 20,000 hrs (not much) and do all the above,
  • now your board see these 4 jacks on the left 1000vdc to CCLF.
I have posted these hard fact there at fixya 100 + times.
here it is 1 more time.
I have the same tubes in my garage ceiling laps 8ft long and do the same thing.
https://en.wikipedia.org/wiki/Fluorescent_lamp#Cold-cathode_fluorescent_lamps
ccfl-cic1fawr01cqkdi5gzuexnlo-5-0.jpg

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You will have to open it up and inspect the inside for capacitors with bulging top or seal, or leaking caps first.
Report back what you find so we can guide you further. It can be bad caps, transformers, transistors, bad solder joints, etc.
You can buy replacement board from here (must verufy which version you have): http://www.lcdrepair.us/Invpowersupply.html
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but when low down the brightness it work good it not goes off , but it is very low brightness and difficult to read text some time......WHAT?

Can you explain in a bit more detail please...I don't know what you mean by.........
'when low down the brightness it work good'?

But try holding down the FN key on your keyboard & tapping the 5fc1ca0.png Button that alters the brightness.

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Dim monitar with flickering screen


Hello,

The problem can be caused by 1 of 2 things either your power supply is going out or the backlight bulbs are going out. The most likely cause is the power supply. If you are willing to do a little soldering you should be able to do the repair. If you go to our web site at: www.ccl-la.com/badcaps.htm We have a section on monitor repair. Look under the Samsung 930B it is the same as your monitor.
If you don't want to do it yourself we do offer a repair service, email me if you are in need of that.

I hope this helps.

Buddy

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