20 Most Recent LG 50PG20 50 in. Plasma HDTV - Page 7 Questions & Answers

Please check for burnt out fuses at the back of the TV. It would be located in the power supply section of the board.most likely you might have blown a fuse/s that's why there's no power.
Good luck and thanks for using Fixya.

G.

Contact the manufacturer :D http://www.fixya.com/support/t9999043-locate_lamp

This is a common fault solution which can be checked and corrected by you assuming that there is no component failure . There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance.

The best way to check for loose connections is to tap lightly when the set is powered on , If there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points.

Sometimes the fault occurs when the set warms up, if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault.

Based on the above method you must be able to locate the area of fault and solder the sections. Sometimes large IC's- ones with more pins- tend to have drying in some pins and so cause faults related to the IC's protocol. Have a rough idea of looking into the areas to reduce the time of probing.

Check for tips to look into the SMPS unit:

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Good day!!!!

This kind of symptoms is cause by faulty(leaky/dried) electrolytic capacitor in the power supply section. In the first stage of symptoms warm up will make itself stable and the unit will power up after a few attempt of plugging and unplugging from the outlet but it will get worst, time will come that the unit will not power up at all.

Leaky capacitor has a physical indication of fault like bulged/dome at the top and can be easily identify like in the sample picture below.



Leaky capacitor with dome at the top.

Dried capacitor has no physical indication of fault, you must have a capacitor checker to determine its condition, if not available you should replace all electrolytic capacitor in the power supply section. It will not cost you much because it is one of the cheapest parts on that board.

Click this LINK for more information regarding electrolytic capacitor.

JE CHERCHE A DEBLOQUE LE CDE PARATANTALE

Hello,

Problem is in either power supply or the Y-Sustain board.

The Y-Sustain is a relatively large board out of which go connections to the side of the display; it's therefore closer to either the left or the right side of the display, has at least one rather large heat sink on it and fat power cables connecting it to the main power supply.

Often there are fuses on that board - one or more. Check those.

if they are blown you can try to replace them, but expect them to blow again - usually the whole board needs to be replaced.
Hoping this will help in solving the problem....

Use HDMI cable to connect the television and home theater.You can see the HDMI input at the back of your television and the HDMI output of the home theater at back of your player.

dead pixels. you will have to carry the service

If you have No LED Light on front of Set then you could have a blowed Fuse on the power supply board.

Look for Bad Capacitors,they will be vented,puffed up on Top if you see any like that they are Bad 1000uf 16v, 2200uf 10v, 3300uf 10v.

Hello,

It's a convergence issue. Go into the main TV menu under video settings and look for convergence. If it has an auto convergence select that and wait a minute the TV will adjust itself and give you a clear picture.
If the TV does not have an auto convergence and just regular convergence than select this. It will give you a grid pattern on your TV and you have to move the cursor (using TV remote) and adjust each "point" so that each line is perfectly white. If you notice red or blue anywhere on that "line" then you have to adjust using the up, down, left and right arrow keys to "line up the red and blue lines with the nearest white line. It takes time and patience to do, but when completed, all lines on the grid pattern should be pure white and you will have a great looking picture.
You have to do this will all TV inputs (Video1, Video2 and so on) the reason Zoom looks good, is because you never used that screen as much and so the lenses didn't have a chance to get out of synchronous.
RPTV's are made of the three lenses (red, Blue and Green) and as you watch TV, these lenses slowly get out of alignment. So you should do a convergence about twice a year to make sure nothing is out of whack.

Good luck in solving the problem....

yes

First: You'll find the manual for your TV here: English
Also check this: http://cl.ly/2O263K1P152P2i0F0N2m
The link above is a picture of the backside of your tv. You got DIGITAL OUT.

it might be one of two things , it is either a buffer board that has gone or the ribbon cable going from the screen to the buffer board. If it is the buffer board it can be fixed by simply replacing the board with a new one, if its the ribbon cable from the screen then it cannot be repaired sorry.


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Look for Bad Capacitors on the Power Supply board,they will be vented or puffed up on Top.
1000uf 16v 2200uf 10v 3300uf 10v

needs new caps on power supply board...
.cheap n easy fix if you can use a soldering iron........
normal lg fault......
cheers

You might just need a voltage adjustment on you power supply's VS line. This has been a common problem on Plasma sets. If the adjustment does not help, then you could have any of a number of issues that could lead from 1 or more board replacements all the way to a pad panel.

The problem with this tv may be either one or both of your Y-buffer modules. located on the far left of the assembly when looking at the back. Part no's may be EBR38374704 and EBR38374802, depending on the version. about $125.-140. retail for both parts. I do however recommend a professional for this install. If you have an issue with the Y-sustain module, you can instantly damage the new modules purchased!