Resolved: Did I buy a bad Samsung main board? TCON Gamma values included
The issue has been solved by replacing the main board again, this time with a model BN94-01199L board.
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One obvious difference in the settings for this "L" board is there was a panel option for 52AMV, and also several more options. Where, the BN94-01199C board only had a total of the three options I showed in the Pictures 52AM, 46AMW, and 40AM.
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I never could find any firmware code updates online, but it is possible if I could have, updating firmware might have been resulted...
fishoak
Member
Last Activity: 05-02-2022, 04:32 PM
Joined: 07-02-2018
Location: GRAND HAVEN
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Re: Did I buy a bad Samsung main board? TCON Gamma values included
I've checked out the boards, but I really don't know which chip I would be replacing. I read the thread about download/upload of eproms - I don't have an eprom reader/writer, and while I could desolder/swap from old to new, I see at least 8 possible 8 pin chips on this board.
Thanks anyway....Leave a comment:
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Re: Did I buy a bad Samsung main board? TCON Gamma values included
I've tried finding any firmware online for this set, but have not had any luck.
Samsung has pulled from their site.
I've googled quite a lot but just have not found anyone who still has a rev posted....Leave a comment:
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Re: Did I buy a bad Samsung main board? TCON Gamma values included
- Checked the Gamma values with the TCon spreadsheet v1.1, there is at least one set of errors in the formulas in the sheet on the Detailed Results tab - formulas in Column B22 and downwards are off by one...once I fixed that, it passed the Monotonicity Test. Overall it says it passes, but in the Symmetry test the last two values say fail...yet...I'm not sure the formulas are correct there too - they cell formulas change pattern right at that cell.
- Attached pic of Panel label
- working...Last edited by fishoak; 07-08-2018, 07:13 PM.Leave a comment:
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Re: Did I buy a bad Samsung main board? TCON Gamma values included
Thanks for suggestions, but no luck.
Turned down contrast and color settings as low as possible, but it did not help.Leave a comment:
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Re: Did I buy a bad Samsung main board? TCON Gamma values included
Double checked and cleaned / reset all cable connections.
Confirmed all are clean, no lifted pins, no bent pins, all seated well.
No luck there.
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Also tried connecting first just the left, then just the right side cables off of the TCON. Result was solid white screen for whichever side was disconnected, while connected side had same picture issue as before.
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Tried again all panel settings in service mode. No luck there. Slightly better picture when panel set to 40AM compared...Leave a comment:
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Re: Did I buy a bad Samsung main board? TCON Gamma values included
I had missed the pictures...trying again......Last edited by fishoak; 07-05-2018, 12:13 PM.Leave a comment:
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Re: Did I buy a bad Samsung main board? TCON Gamma values included
My panel Sticker is LTA520HB04.
So if the chart pasted from shopjimmy is correct, the board should match the set.
The TCON is at the TOP of the set, and there is/was no water in the set.
Maybe the main board is just bad. Do the TCON numbers look normal?
"Part Number: BN94-01199L
MFR Part Number 1: Samsung BN94-01199L
Board Number(s): BN41-00843D, BN97-01415N
Substitute Parts: BN94-01199F, BN94-01199M, BN94-01199C
Panel Sticker Number: LTA5...Leave a comment:
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Re: Did I buy a bad Samsung main board? TCON Gamma values included
If I go into service mode and select a different panel (42AM or 46AM vs 52AM) the picture is much better but it is still not usable.
The panel is 52, looks the worst on that setting.Leave a comment:
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Did I buy a bad Samsung main board? TCON Gamma values included
Hello.
I'm looking for some help to confirm if I may have bought a bad used main board for my Samsung LNT5265FX.
Original problem:
- Screen image faded while watching.
- After power cycling, it would not start back up (clicking noise every few minutes, but no boot)
> Based on other advice, I first replaced the power board's capacitors, though they all looked fine.
This resulted in No change.
> Next I replaced main board BN94-01199L but with model BN94-01199C – visually these two boards look the same and Seller had... -
Re: New Members - please post your introductions here
New member saying hello, looks like a great place.Leave a comment:
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