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Hi! I believe that its a capacitor problem. Check the motherboard for blown or corroded capacitors, you will need to replace it. It wont really work properly if the capacitors are faulty.Hope this helps and have a good one!
You need the ysus board. This is a very common problem with LG's. If it is coming up with the fuse removed you are essentially removing the short from the power supply so that it can come up and deliver other voltages for sound and all. Check out encompassparts.com if you are going to try to repair this yourself. Thanks
After all the research I found out that the IC on the Z board is bad and new board was ordered and replaced. The plasma work fine after that and picture is excellent with the new board. This forum is great, without this I couldn't fix it myself. Thank you.
I just had a similar issue with my 46" Samsung LCD and fixed it myself for $5.11! I realize we have different tvs, but I bet it is the same issue ... crapped out capacitors.
I researched the problem online and most places, like samsung's site, referred me to call a repairman and called for the whole control panel or power supply to be replaced for anywhere between $400-$1000. I was like ... "screw that" ... I refuse to put in a fautly part in the place of a faulty part. So I continued to research.
That's when I stumbled on youtube. There are many how to videos on how to tackle this daunting task. I read that the issue was more than likely faulty capacitors and there is a very easy way to tell if it is in fact the capacitors that are blown. instead of having a flat top, faulty capacitors are crowned or even ruptured! When I opened up my TV I saw 3 blown capacitors!
So I bought 3 new capacitors all with the same uf and higher volts ... I think all three of my capacitors were 1000 uf and 25 volts. I kept the uf the same (recommended) and raised the voltage to 35 volts. It doesn't mean more volts, it just means it COULD handle more volts if it had to (which was the problem those cheap Samsung bastards screwed up on). This is a very common problem with Samsung TVs.
Anyway, I have never soldered before, but I did it. I warmed up the solder on the bad capacitors and removed them them slid thenew ones in and soldered them in and popped everything back together ... and PRESTO .... the damn thing works better than ever!
3 capacitors= $5.11 1 solder gun and solder= about $18 fixing an incredibly intimidating TV by yourself= PRICELESS!
Seriously ... don't be afraid to F up ... check it out on youtube and other place and save yourself a bundle.
I just fixed my TV!!!!!!!!
Very carefully as we discussed in our expert forums this takes skill and it takes the right equipment as you can burn the thrid layer board and you will be without a TV. First you need a 40 watt iron, 60/40 rson core solder/you need wicking wire/ heat sink and a whole lot of experience. check this website www.badcaps.com even know he works on motherboards for computers this guy gives you tips I would follow them and heed to them if I where you!! Good luck with your repair!
This isn't going to solve your issue, but my opinion is that if even if your computer is still running it is still an issue that they should look at especially if the board is still under warranty. I wouldn't say a thing about the computer still being able to run, especially if they will warranty it.
I have seen capacitors burn up, but not the tops blowing off. Even though the board is still working you may have a feature of some sort out, such as you onboard video or something. I almost bet that something is still wrong, and it would be a matter of time before you have more issues.