LG 60" Plasma flickering/changing colors in splotches - Page 2 - AVS Forum | Home Theater Discussions And Reviews
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post #31 of 75 Old 10-10-2015, 08:56 PM
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Questions on soldering..

Hi,
Thanks for your help! I am ready to do this!
I was wondering what kind of solder to use for this. All I could find on amazon was a combo of Tin/Lead (60-Percent tin and 40-percent lead) solder? Is that good enough? Thanks!
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post #32 of 75 Old 10-24-2015, 02:41 PM
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cracked solder pic

I had this issue on my 60PV250. Opened it up and found that the z-sus had a few cracked solder joints on the coils. I have attached a pic of what a cracked solder joint looks like for reference. Soldered all of them again, and now it works great.
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post #33 of 75 Old 10-25-2015, 04:41 PM
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I have this same problem for awhile I had the color chaning when the picture was white but then one day i turned it on the tv was had barely any picture showing i shut it off and turned it back on then it was completely black i did find cracked solder on the zsus board but even after fixing its still just a black picture. but if i unplug the zsus board and turn it on there is some pictrue showing threw if anyone could help me many thanks.
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post #34 of 75 Old 11-08-2015, 10:01 AM
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Removed boards & soldered coils they were cold careful to remove cables by removing tape then lift black tab that holds cable down tv looks better than ever 4 yes old thx!
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post #35 of 75 Old 01-03-2016, 05:28 AM
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Thanks...

I had the same problem with my LG 60PK950
With a little help from my wife, for lifting and placing the heavy plasmaTV on a table, I have soldering the coils.
Three points where broken.
With the fingers crossed I turned the TV on...I have a clear picture.
THANKS
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post #36 of 75 Old 01-15-2016, 05:36 PM
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pn51e530

Would this fix apply to a samsung 51" same symtoms and what is an er coil?
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post #37 of 75 Old 01-17-2016, 09:07 PM
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Hi gang, rang across this thread and I think I have to same issue on my Panasonic VT50. Anyone have the same TV and applied a fix that can walk me through. I really do not want to buy a new TV...yet . See photo

Thanks
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post #38 of 75 Old 02-18-2016, 04:22 AM
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Fulty LG Plasma

My 60in LG plasma (60PV250) also has suffered from green and pink patches appearing on the screen, especially in light areas or on peoples skin. I followed the instructions in this forum and laid my screen down flat on a blanket on the table. Removed the back and the two suspect boards. The solder joints on the coil were certainly faulty. I resoldered these joints and a few others on the board that looked suspect, reassembled everything, plugged it in and turned it on and - SUCCESS - problem solved. Just one word of caution. Be careful unplugging the ribbon cables on the boards as the connectors are quite fragile but ok if treated with respect. Good luck everyone
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post #39 of 75 Old 02-28-2016, 02:48 PM
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A few months ago my LG 60pz550 purchased in 2011 began suffering from the same exact issue as seen in the attachment from the OP. A rainbow of colors, pink and green mostly would appear after the TV was up to operating temperature. It was most apparent when white or lighter colors were displayed on the TV.

Cold solder joints on the coils of my control boards were the culprit. Easy fix and the cold solder joints are very visible. Heat up the coil joints and dab a tiny bit solder on each joint and you will be back in business. I imagine this issue will show up on many LG models designed and built in line with my 60".

Thank you AVS!
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post #40 of 75 Old 03-04-2016, 10:18 AM
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I had the problem of patches of color on the screen. Followed the above directions and the problem is completely solved. Thanks for the detailed directions everyone.
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post #41 of 75 Old 03-21-2016, 07:28 PM
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Red face

After reading about the users who waited to do the fix and then their TVs popped, I took mine apart within 2 days of the color sploshes showing up. One board had 4 of the 6 solder joints broken and the other larger board was fine. I re-soldered all 12 joints so I shouldn't have to take it apart again any time soon. Picture looks great now - thank all!

This was on a 60PV250 that is about 4 1/2 years old and is heavily used.
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post #42 of 75 Old 04-16-2016, 09:13 PM
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OK, I'm going to give this repair a try myself. Same issue with a 60PN6500 I got in 2012 and the pictures people have put up match my issue exactly. But, before I do this, two questions:

1- Do I need to be concerned about the capacitors? This has been asked, but not really addressed. Maybe with this TV type they discharge fast? I'm unplugging it now from ON to let it sit overnight. I've seen advice elsewhere regarding capacitor safety ranging from a screwdriver to a "100 ohm 10W wirewound resistor" for discharge. Thoughts?

2- I've got some silver-bearing solder (62/36/2 Radio Shack) that I've used on TVs in the past. This will work just fine, right?
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post #43 of 75 Old 04-17-2016, 02:47 PM
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Quote:
Originally Posted by knisabre View Post
OK, I'm going to give this repair a try myself.
Repair done. I found three cracked solders on the YSUS and had no trouble touching them up. ZSUS was clean. Running like new again. Thanks for your posts, all.
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post #44 of 75 Old 07-11-2016, 04:45 PM
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Need your help!!

followed this thread as I had the same issues. Found the broken solder joints as described and repaired them. Unfortunately I might be the only one who wasn't thrilled with the result. Can anyone give me some suggestions? I have attached a picture. The black on the screen will go away after an hour??
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post #45 of 75 Old 07-25-2016, 02:19 AM
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Quote:
Originally Posted by tom669 View Post
This is a common issue on these sets. It is caused by some cold solder joints under the ER coils on the Z-sustain or Y-sustain. If you have access to a soldering iron and some leaded solder (lead-free can work but is more difficult to use) then you can repair it.
Thank you tom669. I found cracks on both boards on my LG 60PZ950 from 2011. It had no issues three days ago when the screen suddenly showed splotchy coloring in light colored areas like menus. The Z sustain had obvious solder cracks. On the PZ950, the sustain boards are difficult to separate from the buffer boards. Separating the board-to-board connectors took quite a bit of force. I worked on each connector, using a thin pry tool to separate the connector halves a little. On reassembly, pliers were need to re-mate the halves properly. I used leaded solder and a 60W pencil iron fitted with a chisel tip.

All color splotching is gone and the picture is restored to normal.

Best regards,
Mike Scott
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post #46 of 75 Old 08-13-2016, 11:15 PM
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Help help

I follow the instructions and found the crack, I was really happy. I repaired the solder joints
plug back. hope it was working. but now no pictures at all
what can wen wrong????

thank you
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post #47 of 75 Old 08-14-2016, 04:37 PM
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Quote:
Originally Posted by Jessica Krueger View Post
Would this fix apply to a samsung 51" same symtoms and what is an er coil?
I think this is the same thing I am seeing on my 5 year old Samsung PN51D550 plasma.


Last edited by mikegoldnj; 08-14-2016 at 04:40 PM.
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post #48 of 75 Old 08-19-2016, 03:35 PM
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I followed this on my pdp60R3 it is an oldy. Worked great and I swear the picture is sharper than it has been in a long time. Down side, Now my TV is shutting off by it self like it is overheating.

Any thoughts?
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post #49 of 75 Old 09-18-2016, 08:02 PM
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Hey everybody, I just created this account to come in here and thank all of your for this awesome thread. I have a 60" LG plasma I bought close to 5 years ago and it was having the same problems mentioned above. I followed the fantastic pictures and explainations. I'm proud to say that even though I have never worked on circuit boards (or have any idea what 3/4 of that stuff is on the boards), and having never soldered before, I just fixed my TV for the price of a harbor freight soldering iron and some leaded solder from home depot. About $13 total.

Thank you all once again. You have saved me a lot of money and heartache! You guys rock.
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post #50 of 75 Old 10-02-2016, 10:27 PM
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I was also having the same problem with the ghosting. I took my TV apart and found a bunch of cold solder joints. More than just on the coils. I turned my TV on and it looks great. However after the TV has been on for a while it shut the screen off but it has sound. Then a few moments later it just shuts off.
How long it takes for all this to happen is never the same however it has been happening more and more frequently.
I took it all back apart and checked the joints again, all of the capacitors look good on the power side. And cleaned out the dust... I think it might be on its way out the door if I can't resolve this.
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post #51 of 75 Old 10-22-2016, 06:36 PM
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Have a question. We solder the bad solders and put back together and the ribbon between the y board and power supply switch started to smoke. Electrician thinks bad y board. Any ideas? Thanks for the help. The tv worked fine except for color blotches before this.
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post #52 of 75 Old 10-27-2016, 12:34 AM
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Smile Problem keeps coming back, but fixes do work if done right

Quote:
Originally Posted by knisabre View Post
Repair done. I found three cracked solders on the YSUS and had no trouble touching them up. ZSUS was clean. Running like new again. Thanks for your posts, all.
I had the purple splotches return after a few months, so went to re-solder again. This time, it worked about a month. Fed up with opening up this set, I removed all I good of the old solder completely and used fresh solder and it's been solid every since. It sure does like to crack when it heats, but I think I've got it conquered with this simple Radio Shack stuff.
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post #53 of 75 Old 12-18-2016, 10:50 PM
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Hello!
Sorry to dig up and old thread! I've been having the same issue with my 60pv250, and I have disassembled it to repair for the most part. I can't get the 3 black/white connectors on the zsus and the 5 white connectors on the ysus apart to pull them out. I have removed the ribbon like cables, and the clip cables; just can't figure out the other ones and don't want to force them.
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post #54 of 75 Old 01-05-2017, 05:27 AM
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I have an LG 50PS8000 plasma TV, and it has the same symptoms as described in this thread. I took the back plate off it and tried to remove the boards to the right and to the left but they seemed to be stuck anyway, so I wonder how you actually remove them. I didn't want to unscrew the transistors (?) that were attached to the big grills. Can you help describing how to do it?
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post #55 of 75 Old 01-07-2017, 03:41 PM
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Quote:
Originally Posted by Filip Jensen View Post
I have an LG 50PS8000 plasma TV, and it has the same symptoms as described in this thread. I took the back plate off it and tried to remove the boards to the right and to the left but they seemed to be stuck anyway, so I wonder how you actually remove them. I didn't want to unscrew the transistors (?) that were attached to the big grills. Can you help describing how to do it?
I was *just* having the same problem... Googled... and saw your post. I went back to it and I was able to get them off by using needle nose pliers to get them all loose (went connection to connection very slowly)... once loose, I used a flat head screw driver to continue to loosen them up. Attached some pics.
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post #56 of 75 Old 01-31-2017, 02:02 PM
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Thank you!

So glad I found this forum... my LG Plasma 60PV400 started to have the pink/red haze and general fuzziness on Sunday. I thought I was going to have to purchase a new TV, but luckily I found this forum. I took my TV down Monday night, tore it apart, repaired the cracked solder joints on the Y & Z board and the TV is now good as new!
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post #57 of 75 Old 03-05-2017, 07:23 PM
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Quote:
Originally Posted by Justin Klingel View Post
I have this same problem for awhile I had the color chaning when the picture was white but then one day i turned it on the tv was had barely any picture showing i shut it off and turned it back on then it was completely black i did find cracked solder on the zsus board but even after fixing its still just a black picture. but if i unplug the zsus board and turn it on there is some pictrue showing threw if anyone could help me many thanks.
I had the same problem. Check to see if all the ribbon cables are back on. There was one small one i missed when i reassembled. Good luck!
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post #58 of 75 Old 07-08-2017, 05:46 PM
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You guys rock. I figured I'd research my issue on a whim without even knowing what to query due to the issue i had but this is exactly it. Took down the TV a few minutes ago and sure enough I have 2 cold solder joints on one of the boards. I'll probably reflow them all just to be safe but thank you all! I hope this fixes it.

Dave
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post #59 of 75 Old 07-28-2017, 05:45 AM
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Thanks guys just fixed a 7 year old plasma - bloody fantastic hope this lasts till the OLEDs come on sale
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post #60 of 75 Old 09-19-2017, 09:03 AM
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All Fixed! Thanks!

Developed the same purple ghosting issue on my PZ750 last week. Googled and found this thread, and looked like I had the same problem. Pulled it down (sheesh, forgot how heavy this thing is), opened it up, pulled the Y and Z boards,and sure enough the solder joints were fractured (see pic) on 5 of the 12 solder joints on the coils (circled in yellow). Re-soldered the connections and picture is back to perfect I've had the set 6 years now and this is the first time I've had a problem with it. Hopefully the solder joints hold until it's time to upgrade
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