Re: Samsung LN40A530P
After replacing with a board from another Ebay vendor, the TV works perfectly now. Thanks to you. The picture is so clear that I did not even take the voltage readings!
thecynic0
Member
Last Activity: 04-09-2021, 08:38 PM
Joined: 02-01-2014
Location: San Diego, CA
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Re: Samsung LN40A530P
Could a bad mainboard cause the gamma voltage curve which netcat and I are seeing?
With the metal shield on, I can feel the heat when I touch it after turning the tv off. The heat sink idea is slick, I'll do it once I get the tcon replaced properly....Leave a comment:
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Re: Samsung LN40A530P
I got the bad new board from seller yutu365 on ebay. But I'm seriously considering using shopjimmy.com. The price is a lot higher but the part should be more reliable....Leave a comment:
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Re: Samsung LN40A530P
The readings with the new TCON are monotonically decreasing:
Volt 1 13.96
Volt 2 11.21
Volt 3 10.57
Volt 4 9.77
Volt 5 9.56
Volt 6 9.27
Volt 7 8.85
Volt 8 7.78
Volt 9 7.02
Volt 10 6.47
Volt 11 6.07
Volt 12 4.8
Volt 13 4.3
Volt 14 4.02
Volt 15 3.68
Volt 16 2.89
Volt 17 2.2
Here's the gamma check excel with the values entered....Leave a comment:
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Re: Samsung LN40A530P
I replaced the old TCON board with a new one I got off of ebay. Attached is photo with the new board. The picture quality has definitely improved. The TV is almost OK on a high brightness(80/100), lower contrast(75/100) setting....Leave a comment:
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Re: Samsung LN40A530P
Nice, if you ever travel my way to San Diego, it'd be my pleasure to invite you for drinks or dinner.Leave a comment:
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Re: Samsung LN40A530P
Tom, many thanks!
I am a programmer by profession but this is fun.Leave a comment:
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Re: Samsung LN40A530P
I did not have a multimeter handy and had to get one from work. I got the following V readings:
1 15.04
2 12.87
3 0.02
4 11.21
5 10.92
6 10.84
7 11.82
8 0
9 14.14
10 8.22
11 11.19
12 6.25
13 5.22
14 4.78
15 4.39
16 3.45
17 2.61
DRL1 3.28
DE1 0.78
STV 0
CKV 1.82
VSCW 6.80
v11 of your spreadsheet gives the attached gamma plot....Leave a comment:
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Re: Samsung LN40A530P
Thanks Tom.
Here's a snap of the TCON board....Leave a comment:
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Re: Samsung LN40A530P
Thanks
guys.
I wanted to take a picture of the TCON board but the plate on top appears stuck to the board! Here's a couple of photos.
Solder or whatever else they use on the board, must somehow melted and glued the board to the plate. What do you think?...Leave a comment:
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Samsung LN40A530P
I am trying to troubleshoot a Samsung LN40A530P1FXZA that displays bad coloring. I attached a couple of photos taken with a phone. I am wondering if this is due to a bad TCON, Mainboard or LCD screen. By the way this is a great board, some of the threads, especially the best dumpster finds, are hilarious. Thanks!... -
Re: New Members - please post your introductions here
Hi, my name is Nathan. I am trying learn how to fix a problem with my Samsung TV. I am a Software Engineer by profession and not very handy with electronics even though I would like to learn
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