24in LG mo PSU/board. Bad caps or Bad board

[email protected] · 08-26-2015, 05:54 PM

The basic caps are all bad but I think the inverter transformer might be bad as well. There is a black burn spot on the other side of the transformer. Though I do know sometimes burn marks can arise just from being hot but

...

So my question is this. Do you think I could get away with just replacing the capacitors or do you think it would be best just to replace the full board. I found one on ebay for 31$ but its in hong kong and it'll be a couple/few weeks before it gets here.

**ReeceyBurger123** · 08-27-2015, 01:06 AM

Why trash it, its a fairly simple repair ??? the transformer should be fine if you have a DMM you can test it to be 100% sure but its always worth a try.

**delaware74b** · 08-27-2015, 07:40 PM

....and the evilbay one from China will have the same crap caps on it you have on the one in this thread. Recap it, quality caps are 1/2 the price of the evilbay board.

[email protected] · 08-29-2015, 01:47 PM

Thanks guys, I just wasn't sure if getting a new matching transformer was going to be a option or not. I'll post here the results once I re cap it.

[email protected] · 09-09-2015, 09:02 PM

Ok so i recapped the power board and it now comes on.... But now its extremely fuzzy with pixilated lines. Ive tested it on two systems and two power cords with same result. Any thoughts on what else i could do? Also i did update driver and used diagnostic software with no help.

**c_hegge** · 09-09-2015, 09:25 PM

The picture doesn't look any fuzzier than the bezel in that photo. Are you sure that the resolution is set correctly?

FYI, It's poor practice to use your email address as your username. It's a great way to attract spam.

**budm** · 09-09-2015, 09:29 PM

Did you try reseating the LVDS cable to the LCD panel?

**coreAngel** · 09-10-2015, 01:13 AM

[[email protected];584981]The basic caps are all bad but I think the inverter transformer might be bad as well. There is a black burn spot on the other side of the transformer. Though I do know sometimes burn marks can arise just from being hot but

...

So my question is this. Do you think I could get away with just replacing the capacitors or do you think it would be best just to replace the full board. I found one on ebay for 31$ but its in hong kong and it'll be a couple/few weeks before it gets here.

sorry for the late response i was looking at your pictures and when i saw the suscon caps i was like

i had to recap my psu in an old emac just because of suscrap (why do companies still use crap caps) i switched all to panasonic FR low-esr series.

**coreAngel** · 09-10-2015, 01:13 AM

Quote:

Originally Posted by budm

Did you try reseating the LVDS cable to the LCD panel?

i have to ask when recapping one of the boards should you use low ESR caps or general purpose caps also work?

**kc8adu** · 09-10-2015, 01:42 AM

low esr.
panasonic fm,fr.
rubycon zl
nichicon hd,ect

Quote:

Originally Posted by coreAngel

i have to ask when recapping one of the boards should you use low ESR caps or general purpose caps also work?

[email protected] · 09-11-2015, 10:29 AM

we

Quote:

Originally Posted by c_hegge

The picture doesn't look any fuzzier than the bezel in that photo. Are you sure that the resolution is set correctly

I did all the necessary steps before coming here: Checked cables, used different cables, checked software(video card settings), onboard monitor diagnostics, software diagnostics. Then i switched the monitor to a different computer and the fuzzyness still persisted. The lines you see on that picture aren't suppuse to be there.

[email protected] · 09-11-2015, 10:32 AM

Quote:

Originally Posted by c_hegge

FYI, It's poor practice to use your email address as your username. It's a great way to attract spam.

Well FYI, I was unable to locate the option to change it and more than likely my auto fill created it so the damage is done. Also I've never had a problem with spam because that is what filters are for. Besides there are a lot more efficient ways to acquire someones email address

supertramp · 02-08-2016, 10:32 PM

I have problem my on Sony TV KDL-47W802

from 1 year my picture quality is very and poor video noisy with color not quality as well contrast low, I see HD content like SD , on all source bluray or hd setellite channels or even sample picture on tv not quality
are you advise me to replace my main board

Thanks

View Poll Results: Should I cap it or trash it.
Cap it	4	100.00%
Trash it	0	0%
Voters: 4. You may not vote on this poll

08-27-2015, 01:06 AM	#2
ReeceyBurger123 Never Give Up ! Join Date: May 2014 City & State: Telford My Country: Britain Line Voltage: 240 VAC 50Hz I'm a: Student Tech Posts: 7,199	Re: 24in LG mo PSU/board. Bad caps or Bad board Why trash it, its a fairly simple repair ??? the transformer should be fine if you have a DMM you can test it to be 100% sure but its always worth a try.

08-27-2015, 07:40 PM	#3
delaware74b Badcaps Veteran Join Date: Apr 2009 City & State: Delaware My Country: USA Line Voltage: 480VAC 60Hz or Less I'm a: Knowledge Seeker Posts: 593	Re: 24in LG mo PSU/board. Bad caps or Bad board ....and the evilbay one from China will have the same crap caps on it you have on the one in this thread. Recap it, quality caps are 1/2 the price of the evilbay board. __________________ Stupidity should be a crime, especially for drivers. I have NO patience for them.

08-29-2015, 01:47 PM	#4
[email protected] I am Awesome Join Date: Aug 2015 City & State: Cordova My Country: United States I'm a: Knowledge Seeker Posts: 7	Re: 24in LG mo PSU/board. Bad caps or Bad board Thanks guys, I just wasn't sure if getting a new matching transformer was going to be a option or not. I'll post here the results once I re cap it.

09-09-2015, 09:25 PM	#6
c_hegge Badcaps Veteran Join Date: Sep 2009 City & State: North Coast, NSW My Country: Australia Line Voltage: 240V 50Hz I'm a: Professional Tech Posts: 5,052	Re: 24in LG mo PSU/board. Bad caps or Bad board The picture doesn't look any fuzzier than the bezel in that photo. Are you sure that the resolution is set correctly? FYI, It's poor practice to use your email address as your username. It's a great way to attract spam. __________________ I love putting bad caps and flat batteries in fire and watching them explode!! No wonder it doesn't work! You installed the jumper wires backwards Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro Last edited by c_hegge; 09-09-2015 at 09:27 PM..

09-09-2015, 09:29 PM	#7
budm Badcaps Veteran Join Date: Feb 2010 City & State: S.F. Bay area My Country: USA Line Voltage: 120V 60Hz I'm a: Knowledge Seeker Posts: 39,204	Re: 24in LG mo PSU/board. Bad caps or Bad board Did you try reseating the LVDS cable to the LCD panel? __________________ Never stop learning Basic LCD TV and Monitor troubleshooting guides. http://www.badcaps.net/forum/showthr...956#post305956 Voltage Regulator (LDO) testing: http://www.badcaps.net/forum/showthr...999#post300999 Inverter testing using old CFL: http://www.badcaps.net/forum/showthr...er+testing+cfl Tear down pictures : Hit the ">" Show Albums and stories" on the left side http://s807.photobucket.com/user/budm/library/ TV Factory reset codes listing: http://www.badcaps.net/forum/showthread.php?t=24809

09-10-2015, 01:13 AM	#8
coreAngel Senior Member Join Date: Oct 2014 City & State: FL My Country: United States Line Voltage: 120 VAC 60Hz I'm a: Knowledge Seeker Posts: 114	Re: 24in LG mo PSU/board. Bad caps or Bad board [[email protected];584981]The basic caps are all bad but I think the inverter transformer might be bad as well. There is a black burn spot on the other side of the transformer. Though I do know sometimes burn marks can arise just from being hot but ... So my question is this. Do you think I could get away with just replacing the capacitors or do you think it would be best just to replace the full board. I found one on ebay for 31$ but its in hong kong and it'll be a couple/few weeks before it gets here. sorry for the late response i was looking at your pictures and when i saw the suscon caps i was like i had to recap my psu in an old emac just because of suscrap (why do companies still use crap caps) i switched all to panasonic FR low-esr series. __________________ Yes i love Nichicon MUSE Audio Capacitors...they would look awesome all over any motherboard

02-08-2016, 10:32 PM	#13
supertramp New Member Join Date: Jun 2015 City & State: Tripoli My Country: Libya I'm a: Knowledge Seeker Posts: 1	Re: 24in LG mo PSU/board. Bad caps or Bad board I have problem my on Sony TV KDL-47W802 from 1 year my picture quality is very and poor video noisy with color not quality as well contrast low, I see HD content like SD , on all source bluray or hd setellite channels or even sample picture on tv not quality are you advise me to replace my main board Thanks

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