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Samsung LN46A500T1F Color Distortion problem
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Re: Samsung LN46A500T1F Color Distortion problem
Same way as I told you before, on the TV's menu system scroll down to the gear icon or the area were the SW update is and hit info on the remote when the SW update is highlighted. Should tell you, it also should have asked you when you did the update your version is xxx.xxx do you want to update to xxx.xx01.
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Re: Samsung LN46A500T1F Color Distortion problem
Glitcher - how did you know the values AD measured were bad?
OK... first of, please let me know if I'm understanding the numbers correctly according to the picture bellow... Is that the right order?
If so.... here are the values.
Volt 1 15.1
Volt 2 12.9
Volt 3 12.1
Volt 4 11.32
Volt 5 10.92
Volt 6 10.6
Volt 7 10.47
Volt 8 12.61
Volt 9 9.23
Volt 10 6.43
Volt 11 6.1
Volt 12 4.46
Volt 13 6.77
Volt 14 7.52
Volt 15 5.78
Volt 16 7.93
Volt 17 3.2
Do you have a PL for this board? Or ... could you tell me what the readings should be?
Thank you
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Re: Samsung LN46A500T1F Color Distortion problem
Originally posted by Shinju View PostSame way as I told you before, on the TV's menu system scroll down to the gear icon or the area were the SW update is and hit info on the remote when the SW update is highlighted. Should tell you, it also should have asked you when you did the update your version is xxx.xxx do you want to update to xxx.xx01.
Hum, wait - when i did the update, I didn't get either of those pop-ups. I believe i just had a pop up "software updating" ... my memory is fuzzy. either way, i'll re-do it tonight for shi* & giggles.
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Re: Samsung LN46A500T1F Color Distortion problem
Your gamma voltages are bad, so you need to replace the IC to fix it.
6th one this week!Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Samsung LN46A500T1F Color Distortion problem
Originally posted by tom66 View PostYour gamma voltages are bad, so you need to replace the IC to fix it.
6th one this week!
Those weren't my values. Those were posted by AD a week ago or so... I was asking what the values should be.
I won't be able to post my values until I get home from work.
Thank you,
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Re: Samsung LN46A500T1F Color Distortion problem
The values vary.
However, a general rule is that the voltages should go up slowly or go down slowly, but not both. e.g. 1, 2, 3, 4V is OK, 4, 3, 2, 1V is OK, but 1, 3, 2, 4V is bad.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Samsung LN46A500T1F Color Distortion problem
Thank you Tom66!!
It looks like I have a bad reading on the T-Con board. #9 voltage is slightly off
# V
1) 15.13
2) 13.01
3) 12.18
4) 11.30
5) 10.90
6) 10.53
7) 10.07
8) 9.45
9) 8.87
10) 9.09
11) 11.61
12) 6.70
13) 5.24
14) 4.73
15) 4.27
16) 3.33
17) 2.51
MODULE: T-PRLAUSC-1008.0; MICOM: T-PRLAUSM-1007 MTK-DRV 2.0.90.0; RFS: T-PRLAUS-20080103
I uploaded two pictures from netflix. The blue color is when the TV is in "Dynamic mode" and the Red is when the TV is in "Movie mode."
I updated two pictures from channels on OTA. One is in HD, the black is pixelated as green. The other is in SD, and really distorted.
Where can I buy a new T-Con board? Do you guys think this is also a Main Board issue??
Thank you
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Re: Samsung LN46A500T1F Color Distortion problem
Guys,
Just to wrap up my case... I finally had the chance today to try get the IC off the board using a heat gun, but I'm afraid it didn't go well. It did came off at the end, but I damaged 3 pads, and that pretty much is the end of it. It DOES have a pad under it, and is a real PITA to melt. I think it needs to be done simultaneously heating from underneath.
My only way out will be getting another T-con since I messed up this one
AD
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Re: Samsung LN46A500T1F Color Distortion problem
Nice!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
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Re: Samsung LN46A500T1F Color Distortion problem
Nice one, thanks for the feedback. For future reference you could note your new GAMMA voltages?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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Re: Samsung LN46A500T1F Color Distortion problem
BTW, where did you get the IC from? I am collecting info on reliable source of this IC.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
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Re: Samsung LN46A500T1F Color Distortion problem
I'm out of town, but I'll collect the voltages when I get back and post for you guys. Regarding the IC, I bought it from eBay at the link bellow. I probably would try a US seller though, it took about 15 days to get it.
Look at this on eBay:
http://pages.ebay.com/link/?nav=item...d=170776860415
1pcs AS19-H1G AS19H1G QFP48 ORIGINAL
AD,Last edited by "AD"; 05-03-2014, 08:48 PM.
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Re: Samsung LN46A500T1F Color Distortion problem
I have the exact same model TV LN46A500T1F and the issue seemed similar, though my screen has giant areas of greens and blues where his seem more just hued. It seems anywhere that requires black turns a color. Turning the contrast to zero made the entire screen green. I opened it up and checked voltage on the gamma and got the following result.
1 13.94
2 13.76
3 12.41
4 9.11
5 10.24
6 10.54
7 11.74
8 9.10
9 4.32
10 6.41
11 6.20
12 5.44
13 4.86
14 4.54
15 4.13
16 3.24
17 2.47
X .47
Behind the board the area around the AS19 seems to be discolored, possibly from excessive heat.
My chip is labeled as follows:
AS19-H1G
0821
B8308126
I've searched ebay and see this chip.
http://www.ebay.com/itm/100-BRAND-NE...item35ce869cde
Now for my question. Based on the information I have it would seem I need to replace the chip, is there something else I need to check first?
Also, do I need to worry about the discoloration on the rear copper portion of the board?
Thank you.Last edited by inb4tehlulz; 05-04-2014, 06:29 PM.
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