LG 37LG10-UM has grey screen color and ghosting

[ReeceyBurger123]

Re: LG 37LG10-UM has grey screen color and ghosting

Thats odd, when I first started soldering putting the As15's on that have a thermal pad I used to use 450d hot air lol then tac the pins. Now Im alot more aware to proper temperatures after burning up a few things.

[Andrew F. Ali]

Re: LG 37LG10-UM has grey screen color and ghosting

Thats odd, when I first started soldering putting the As15's on that have a thermal pad I used to use 450d hot air lol then tac the pins. Now Im alot more aware to proper temperatures after burning up a few things.

I still use the 'old' method....I would cut the pins off the IC...then use soldering iron to remove the pins....fit the new IC solder the corner pins...flood the side pins with solder...use braid to remove excess solder...use magnifying glass to check solder work...test.....presto...it works....Done this about 5 times already........destroyed 3 ICs though in the process

[diif]

Re: LG 37LG10-UM has grey screen color and ghosting

I use hot air to remove the old one, add fresh solder then remove with braid. Then either hot air or my small iron to replace.
I then go round with my multimeter in continuity mode to ensure all the pins are soldered and there are no bridges.
Stick on a thermal pad and test for 24 hours. The only time I have had a failure was when I hadn't fitted the tcon heat shield propely and the thermal pad wasn't making contact.

[axlmastr]

Re: LG 37LG10-UM has grey screen color and ghosting

I ordered the the AS15-U IC the other day and will post my findings when I get it soldered in. It's a pain finding the real thing these days. Sooo many counterfeits!

I have a new post for another friend's Samsung LED monitor that I worked on a couple years ago for a different common issue but now it's back for an unrelated but also common issue... no backlight POST or shortly thereafter. I have a HP CCFL monitor of mine that has the 2 seconds to dark issue I'll be posting pics for in another thread as well.

Thanks for your help. All of you. Nice to see you chime in kc8adu! It's been a while since seeing you on my thread!

[axlmastr]

Re: LG 37LG10-UM has grey screen color and ghosting

The IC AS15-U is installed and running cool. I now have color and a full display without the odd contrast issue. See pictures.

I have now a bit of colored noise in the display. Thin random lines horizontal lines spaced widely apart that "dance" up and down the screen. Noticeable in total black or dark background. I also have random flecks of red and blue snow in that background and especially along the top edge.

Your thoughts?

[diif]

Re: LG 37LG10-UM has grey screen color and ghosting

Good work, maybe remove and clean the LVDS cable and the two flat cables from the tcon it's possible something's dirty or not sitting correctly.

[axlmastr]

Re: LG 37LG10-UM has grey screen color and ghosting

Thanks I'll give it a try and post my findings

[jneupauer@sbcglobal.net]

Re: LG 37LG10-UM has grey screen color and ghosting

37lg10 t-con t5537t03c02

had washed out picture

here are the voltages after changing the AS15-U...


vgama22 .39
vgma21 .53
vgma17 3.94
vgma16 4.47
vgma15 4.75
vgma13 6.49
vgma12 6.75
vgma11 7.51
vgma10 7.56
vgma8 9.55
vgma7 9.81
vgma6 10.53
vgma2 15.05
vgma1 15.24

Picture now normal