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LG Flatron died overnight


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#1 chrisg

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Posted 07 November 2016 - 02:26 PM

Hmm.

 

Monitors are something I do not take much notice of, I'm not a gamer so whatever fits on the desk and suits my eyes will do but I like this screen and when I get up this am it refuses to power up.

 

It doesn't have an external PSU brick so I'm assuming there is a fuse in there somewhere but they sure don't make it easy for you to get in.

 

I dunno, I hate binning good tech, it is several years old and not worth taking to a repair shop - a replacement is like $150.

 

Anyone able to give me any clue on how to get into this thing ? :)

 

I have spares so not suffering but I keep looking at it and thinking "I want to fix you " :)

 

Cheers


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#2 Rybags

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Posted 07 November 2016 - 03:11 PM

I fixed my two old Chimei monitors about 18 months ago.  In both cases all the black caps in the power board bulging so grand total of $15 or so @ Jaycar and 30 minutes or so work each fixed it.

Although when I say fixed it's not 100% - there seems to be some AC induced flicker that I don't think was there before in the fluoro backlight although don't they run on AC anyway?

 

In your case my guess would be either fuse or powerboard has gone bad, or it might be something as simple as the power microswitch no longer functioning.

 

Opening the thing up shouldn't be too hard, if it's not screwed then it's probably a clamshell type thing with strategic points to put pressure on or insert something thin into to open up.

The beauty of most monitors and TVs these days is that the commonly failing stuff is just easy to get to.  Literally 3 minutes or less and you have the power board removed without disturbing much else.

 

No doubt you should be able to test if the microswitch is bad by a comination of overriding it by jumpering as well as continuity testing while pressing the button multiple times.

 

 

Footnote - some monitors AFAIK have that HDMI auto power-on function although it's probably an option you'd have had to set earlier.

Also there's the plug/play detection that will often work on a monitor that's not even powered up though I think that's because the HDMI is supplying power for that to happen.


Edited by Rybags, 07 November 2016 - 03:13 PM.


#3 chrisg

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Posted 07 November 2016 - 03:38 PM

Hmm,

 

Thing is it just went down whilst on an always on system, which is why I really do suspect a fuse, but the powerboard is certainly an option.

 

I suppose I have nothing to lose in cracking it open - and the thought of the switch is also worth exploring.

 

Thanks !! :)

 

Oh - No, should be DC internal, you are probably getting some AC ripple, strangely a good power board rather than direct to the wall often fixes that. I know very little about flat screen monitors, tvs I used to service ;) Might seem like similar tech but no it is not ;)

 

Cheers


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#4 Rybags

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Posted 07 November 2016 - 03:54 PM

Just looking @ photos I took of mine + one I downloaded as part of a guide.

Looks like no fuses on the power board but a surface mount fuse supposedly exists on the low-voltage logic board.

 

I suppose if anything it's at least worth a look inside to check for shit-stains as evidence of the smoke getting out.


Also worth a look on places like http://badcaps.net and eBay to see if any info is about.  In the case of eBay there's usually sellers that make up repair kits with components for common failing units.



#5 Jeruselem

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Posted 07 November 2016 - 04:13 PM

The LG Flatron L1510 on my desk is still going, should have died a long time ago!


Is your WiFi on KRACK?


#6 chrisg

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Posted 07 November 2016 - 05:01 PM

Just looking @ photos I took of mine + one I downloaded as part of a guide.

Looks like no fuses on the power board but a surface mount fuse supposedly exists on the low-voltage logic board.

 

I suppose if anything it's at least worth a look inside to check for shit-stains as evidence of the smoke getting out.


Also worth a look on places like http://badcaps.net and eBay to see if any info is about.  In the case of eBay there's usually sellers that make up repair kits with components for common failing units.

:)

 

I think I will but I also think I'll wait for Middy to come over - he's good at getting in there, I'm good at fixing :)

 

Cheers

 

Edit: I very, very rarely have monitors die on me J, that's why I'm not too stressed, I just pulled up an Acer that sort of wasn't doing much, but I just like to fix things ;)

 

What a GREAT site Ry, never knew of it - thanks !! :)

 

Cheers


Edited by chrisg, 07 November 2016 - 05:14 PM.

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#7 Rybags

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Posted 08 November 2016 - 11:47 AM

Any advancement with this?  I'm in curious mode now.

 

What model is the monitor - I'd like to give it a search, the common thing with LCDs is that problems like this are usually widespread.



#8 chrisg

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Posted 09 November 2016 - 10:51 AM

It's a W224T so far from new, I haven't gotten back to it yet, been a bit distracted, but will get into it end of week.

 

Cheers


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