Re: iiyama ProLite H481S - random flickering and/or blank screen

Yes, it makes sense that hitting the monitor would only bring it back to life if it were caused by bad soldering or bad CCFL mounting.

How would you suggest to disassemble the actual LCD module (which contains the backlights)? I've been unable to find a good tutorial for it. I'll give it another Google in a bit.

Just a heads up, after having dis- and reassembled the monitor, the problem disappeared (for now). I do have some light flickering going on once every 3-4 days, but the display no...

Re: iiyama ProLite H481S - random flickering and/or blank screen

Good idea, the_unique!

Re: iiyama ProLite H481S - random flickering and/or blank screen

@ retiredcaps thank you for your guidance.


1) Yes, it's just a backlight problem.

2) As stated in my original post: yes, power LED stays lit after screen goes blank.

It's gonna take a few days for me to complete step three and four. Thank you so far.

Re: iiyama ProLite H481S - random flickering and/or blank screen

@ the_unique: Great, I know how to measure voltages - let me know what you want me to measure. Keep in mind though that at this point the problem appears randomly, not constantly. It will be hard for me to measure voltages during the flickering. I want to repair it before the caps or backlight completely dies.

Re: iiyama ProLite H481S - random flickering and/or blank screen

retiredcaps, thank you for your reply. I linked to a large image because I assumed people would need to see the photo in high resolution. Thank you for adjusting it to the forum rules, either way.

Yes, I have a (cheap) multimeter. Would I have to solder the caps off before I can test them? Which multimeter mode would I have to look for to test the caps? I have not measured a capacitors F value before. I'll have a look in the multimeter manual, as well.

Hi guys! Great forum, I've done a lot of reading here the past couple of weeks but still can't seem to fix my problem.

Few months ago, my 5 year old iiyama ProLite H481S started flickering randomly. In the following weeks, it started just going blank entirely once every week or so.

The power LED would remain active - I would have to turn my LCD off and on to turn the backlight back on. Sometimes it would turn right back off. Hitting on the LCD (why?) would suddenly get it to work again and stop the random flickering for a week again.

Recently, these...