LG 24MN33D-PZ no power symptom

Hi Guys,

LG 24MN33D-PZ
LG 24MN33D-PZ Dead on Arrival

Today we repaired a LG monitor that had a “no power on” problem. The cliente told us that it didn’t receive power, no lights turn on, nothing, it was basically dead. So we tried to power it up, change the power cables, etc… just to check if it wasn’t any minor issue, but we just ended up confirming all the faults, this LG 24MN33D-PZ had seen better days. Granted, this monitor is almost three years old, and does have some more than normal use on a day to day basis.

 

 LG 24MN33D-PZ
LG 24MN33D-PZ

So after we disassembled the LCD, we took a lot around at the usual suspects on the Power Board, but nothing out of the ordinary, so we proceeded to check the LG MAIN PCB, which by the way is a LC31A / 26LN4500 / EAX65077403 (1.0).

 

 

Normally we start measuring all the diodes and capacitors, and these two type of componentes are normally the main culprits to most of these type of issues, and actually this time we were pretty lucky, as one of the first capacitors that we tested was giving as a short-circuit read on our Multimeter.

EAX65077403 Close up
EAX65077403 Close up at C802 capacitor
Soldering a C802 cap on a EAX65077403 Main PCB
Soldering a C802 cap on a EAX65077403 Main PCB

 

 

 

 

 

 

This little guy is a SMD mounted Ceramic Capacitor, located at C802, and all we did was take this on out with our Hot air gun and a pair of Hakko CHP 7-SA Tweezers…. Then we proceeded to solder a new one on and Voilà, all that was left to do was to test it out. Before we powered it up we tested the cap again with our multimeter and this time there was no short found.

Here is a close-up of the little guy.

Close-up of a Short Circuit SMD Ceramic Capacitor
Close-up of a Short Circuit SMD Ceramic Capacitor

 

 

 

 

 

 

Well Long story “short”… no pun intended… but we did power on the LG 24MN33D-PZ, and it turned on, giving us the pleasure of seeing that tender crisp image of a LCD that even after three years of extensive use, looks like it will probably give a few more to it’s happy client.

LG 24MN33D-PZ Testing and Working fine
LG 24MN33D-PZ Testing and Working fine

Thanks for reading.

Author: Hélder Santos

5 thoughts on “LG 24MN33D-PZ no power symptom

  1. Maribeth Reply

    Next time I read a blog, Hopefully it do18n&#s2e7;t disappoint me as much as this one. After all, I know it was my choice to read through, however I actually believed you’d have something useful to say. All I hear is a bunch of crying about something you could fix if you were not too busy looking for attention.

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