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Topic # 161956 25-Jan-2015 09:38
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Not sure if this is the best section for this post but wanted some help. 

 

I have a 27" LCD monitor (pretty nice one) which is out of warranty. It works but screen flickers black sometimes. No dead pixels as far as I have checked. 

 

I would be pretty keen to change the backlights or flouro regulation module, is this easy to do and where to get the parts? if its going to be too much hassle is there anywhere in Auckland you can recommend to get it repaired, I am hoping it wont be too expensive. 

I can put up photos give more info if you need. Any help would be great. Im keen to give it a crack





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  Reply # 1221724 25-Jan-2015 09:51
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I've had a go at repairing these things but without much success. They are so cheap these days you have to wonder about even thinking about taking them apart. And I certainly would wonder about the financial viability of a commercial repair.

But good luck with whatever you decide. Let's know how you get on.

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  Reply # 1221852 25-Jan-2015 14:42
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Usually the capacitors in the power supply.  I've even fixed a laptop power supply where it was ceramic chip capacitors (not electrolytic capacitors) that failed as they were running at their limit (designed that way, fraction of a cent cost difference but reduces product life so they can sell more).  With a monitor, it is typically an electrolytic capacitor in the backlight driver (can be CCFL or LED, very different power supply but the same principals).  AFAIK a faulty CCFL will just not work or be dim/yellow.  If you have spare time, could be worth opening and having a look.  Even if just out of curiosity.




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  Reply # 1221882 25-Jan-2015 15:58
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I miss my old monitors. They are all LED backlit now which unless you have at full brightness use cheap PWM dimming so flicker like a cheap amoled cellphone screen.

Some now promise flicker free backlight dimming but im not upgrading for a while till the higher res ones are cheap. then will see how it looks.




Richard rich.ms



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  Reply # 1222403 26-Jan-2015 13:43
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Yeh so the screen works but cuts out all the time. Been told by a guy who has fixed these before (but lives far away from me) its most likely the inverter and that i could find one on eBay for quite cheap. I am not entirely sure of the make up of this panel, but the inverter board should be that board across the top?

See the image. 

Click to see full size





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  Reply # 1222408 26-Jan-2015 13:47
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Black part on the side with the pink etc wires is inverter.




Richard rich.ms



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  Reply # 1222432 26-Jan-2015 14:30
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Yeh so it seems its a Samsung BN44-00308C is what i need.

 

The board is a Ecofit GH341A

Hopefully I can find some that are available an order one in. 





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