Due to the fact that I ran out of new cubes and the customers were pressing, I desoldered the old one, on which the TV was restarting with the logo, then deleted and programmed again. After soldering the cube, everything works fine, but the question is how long, are these bones a problem with...

I have a different programmer, but there is a problem with K9GAG08U0E. That's why I'm looking for some NAND programmer. In the TL866 memory support list, K9GAG08U0E is among many others. All in all, are you sure the TL866 will not program K9GAG08UE correctly? PS I didn't notice that you edited in the meantime. Sorry for littering the topic.

Since 1.04. ends The proof Link_ ProMan / TL86 Unstable reading data from NAND Samsung K9GAG08U0E how do you buy TL866 plus (TL866A +), you will forget the problem (necks) - NOT TL866cs / and TL866a TL86-PLUS-ProMan-Professional-Programmer-Repair-Tool * for anything from $ 110-140

Certainly the old one will perform better than the new ones from China (about 4.5 $ / item, minimum purchase 5pcs). It is tested, burned in, ... Almost all new from BB, depending on lot 5-10. Reliability of semiconductor elements is an alternative of many factors, related to each other, Apart from the fact that power is in silicon there is also Si dark side> greater failure rate

You did not buy a new one because you were lucky that the old one survived! That's the whole philosophy. * as F. Kiepski used to say

In my one known case the old K9GAG08U0E-SCB0 after programming with the programmer, it worked for a year, a few other cases still work for months.

A suitable tip in a soldering iron, lots of tin. Or an old transformer soldering iron with a suitably made tip. NAND can be soldered many times in this way. Theoretically possible problem with electrostatics, but I did not damage the circuit. For convenience, you can raise the temperature of the plate with the preheater.

If someone likes a little adrealinki, why not

Are the consequences of such soldering immediate or do they reveal themselves after some time? I have sold more than one cube with HA and apart from a few cases of memory re-soldered after programming (actually with an unreliable programmer then) there were no problems.

You may ask what are you programming K9GAG08U0E-SCB0?

Programming of the K9GAG08U0E-SCB0.

I am asking because I would like to buy. It's a bit late to buy a NAND programmer, but maybe it's still worth the investment. I am looking for confirmation that Proman is also good at K9GAG08U0E. On Ali I found: NAND ProMan Professional Programmer TL866 PLUS Programmer Note: After we verify, this programmer not support chip K9GAG08U0E, description of supporting it on aliexpress are wrong.

Well, but maybe you will kindly comment on the topic ... thank you

Thanks for the suggestions, but I would like to ask something about. I repeat, after soldering the TV cube, it flashes elegantly, all functions work properly, it is upgraded, etc., i.e. the cube has been programmed correctly. The question is whether to mount used memory, not a new one, there are any chances for a longer TV work, is it doomed to failure in advance? Screenshot from the program:

And just such a firm and bold answer I expected, my neighbor, and for that like , thank you. And basically, I agree with this thesis, for 5 brand new items there is 1 or two without BB, the rest is sometimes taken over by the programmer, provided that the number of BBs does not exceed its capabilities. So the question is whether it makes sense to buy the new?

Or maybe it is due to a total change in the technique of bone emergence? So, semi-warm Before that, they all rained down. It may turn out that we unnecessarily exchange for new ...

In my case, these cubes fell from the booty, each one without exception.

New cube, without BB, surprisingly, without the famous 2073! works perfectly, and after desoldering with a hotem, it cannot be programmed ...

For best results, you need a native chip with a native firmware dump. The correct programmer (inexpensive Easy-NAND Tiny Tools & UFPI) can do everything himself and correctly. New K9GAG08U0E do not always give 100% results. Soldering into a TV programmed with an RT809H chip is the same as soldering a programmed purchased chip. The BB table is corrupted and now this chip can only be used at random. There is a lot of BB in these chips, but there is little information in the firmware. Either she does not get on the BB, or she is not very significant and the TV will work. But! This chip is designed to work with Smart and USB. And this means that some information will be constantly recorded in it. Due to the lack of a correct table BB, the information recorded during the operation will fall on the BB and the TV will break again. TVs are often brought in 6-12 months after the repair and it is already impossible to help a person, because K9GAG08U0E was programmed with the help of RT809H, ProMan or TNM or the purchased one was installed. Such a TV will not be brought back to you - the guarantee has passed, but there is no trust in you. “Easy-NAND Tiny Tools” with new software can fully restore the performance of this TV platform. He adds the necessary BAD BLOKS to the table and recalculates the ECC.

[Solved] NAND K9GAG08U0E-SCB0 - does it make sense to solder the used one?

GanCegall 16494 20

Best answers

Can a used Samsung K9GAG08U0E-SCB0 NAND flash be soldered back into a TV after reprogramming, and will it last?

Yes—if the used K9GAG08U0E-SCB0 was read and programmed correctly, it can work reliably; one report says a reprogrammed used chip worked for a year, and other cases kept working for months [#17511976] The NAND itself can be soldered many times if handled properly, using a suitable iron tip, plenty of solder, and ideally a preheater; hot-air soldering can also work, with only a theoretical ESD risk [#17512440][#17512561] Several users also noted that the old, proven chip may be better than cheap new Chinese replacements because it is already “burned in” [#17144634] The bigger long-term risk is not that the NAND is used, but that it was programmed with a tool that does not handle bad blocks and ECC correctly, which can corrupt the BB table and make the TV fail again after 6–12 months [#17527341] If possible, use a native dump and a proper NAND programmer that restores the bad-block table correctly [#17527341]

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#1 17142832 01 Apr 2018 18:47

GanCegall GanCegall

Level 38

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Post #1
17142832 01 Apr 2018 18:47

Due to the fact that I ran out of new cubes and the customers were pressing, I desoldered the old one, on which the TV was restarting with the logo, then deleted and programmed again.
After soldering the cube, everything works fine, but the question is how long, are these bones a problem with themselves, or do they just sometimes "lose" the contents, such as SPI memories in Vestels, or do they physically damage?
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#2 17142885 01 Apr 2018 19:15

Adewag Adewag

Level 21

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Post #2
17142885 01 Apr 2018 19:15

You may ask what are you programming K9GAG08U0E-SCB0?
#3 17142911 01 Apr 2018 19:32

GanCegall GanCegall

Level 38

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Post #3
17142911 01 Apr 2018 19:32

Programming of the K9GAG08U0E-SCB0.
#4 17143118 01 Apr 2018 21:05

Adewag Adewag

Level 21

» | Helpful post? (+1)

Post #4
17143118 01 Apr 2018 21:05

I am asking because I would like to buy. It's a bit late to buy a NAND programmer, but maybe it's still worth the investment. I am looking for confirmation that Proman is also good at K9GAG08U0E.
On Ali I found:
NAND ProMan Professional Programmer TL866 PLUS Programmer

Note: After we verify, this programmer not support chip K9GAG08U0E,
description of supporting it on aliexpress are wrong.
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#5 17143159 01 Apr 2018 21:19

GanCegall GanCegall

Level 38

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Post #5
17143159 01 Apr 2018 21:19

Well, but maybe you will kindly comment on the topic ...
thank you
Helpful post

#6 17143237 01 Apr 2018 22:00

Adewag Adewag

Level 21

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Post #6
17143237 01 Apr 2018 22:00

I have a different programmer, but there is a problem with K9GAG08U0E. That's why I'm looking for some NAND programmer. In the TL866 memory support list, K9GAG08U0E is among many others.
All in all, are you sure the TL866 will not program K9GAG08UE correctly?

PS
I didn't notice that you edited in the meantime.
Sorry for littering the topic.
Helpful post

#7 17143388 01 Apr 2018 22:33

lisek lisek

Service technician RTV

» | Helpful post? (+1)

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Post #7
17143388 01 Apr 2018 22:33

Since 1.04. ends
The proof Link_ ProMan / TL86 Unstable reading data from NAND Samsung K9GAG08U0E

how do you buy TL866 plus (TL866A +), you will forget the problem (necks)
- NOT TL866cs / and TL866a

TL86-PLUS-ProMan-Professional-Programmer-Repair-Tool

* for anything from $ 110-140
ADVERTISEMENT
#8 17143751 02 Apr 2018 08:36

GanCegall GanCegall

Level 38

» | Topic author Helpful post? (0)

Post #8
17143751 02 Apr 2018 08:36

lisek wrote:
when you buy TL866 plus (TL866A +), you will forget about the problem (necks)

Thanks for the suggestions, but I would like to ask something about.
I repeat, after soldering the TV cube, it flashes elegantly, all functions work properly, it is upgraded, etc., i.e. the cube has been programmed correctly.
The question is whether to mount used memory, not a new one, there are any chances for a longer TV work, is it doomed to failure in advance?

Screenshot from the program:
Helpful post

#9 17144634 02 Apr 2018 17:49

lisek lisek

Service technician RTV

» | Helpful post? (+1)

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Post #9
17144634 02 Apr 2018 17:49

Certainly the "old" one will perform better than the new ones from China (about 4.5 $ / item, minimum purchase 5pcs).
It is tested, "burned in", ...
Almost all new from BB, depending on lot 5-10.

Reliability of semiconductor elements is an alternative of many factors, related to each other,
Apart from the fact that "power is in silicon" there is also "Si dark side"> greater failure rate
#10 17144667 02 Apr 2018 18:10

GanCegall GanCegall

Level 38

» | Topic author Helpful post? (0)

Post #10
17144667 02 Apr 2018 18:10

lisek wrote:
Certainly the "old" one will do better than the new ones from China

And just such a firm and bold answer I expected, my neighbor, and for that "like" , thank you.
And basically, I agree with this thesis, for 5 "brand new" items there is 1 or two without BB, the rest is sometimes taken over by the programmer, provided that the number of BBs does not exceed its capabilities.
So the question is whether it makes sense to buy the "new"?
ADVERTISEMENT
Helpful post

#11 17144679 02 Apr 2018 18:14

lisek lisek

Service technician RTV

» | Helpful post? (+1)

Helpful post
Post #11
17144679 02 Apr 2018 18:14

You did not buy a new one because you were "lucky" that the old one survived!
That's the whole philosophy.
* as F. Kiepski used to say

Quote:
There are things in the world that physiologists have not dreamed of.
#12 17144790 02 Apr 2018 19:24

GanCegall GanCegall

Level 38

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Post #12
17144790 02 Apr 2018 19:24

lisek wrote:
because you were lucky that the old one survived!

Or maybe it is due to a total change in the technique of bone emergence? So, semi-warm
Before that, they all rained down.
It may turn out that we unnecessarily exchange for new ...
Helpful post

#13 17511976 22 Oct 2018 22:40

ppieciak ppieciak

Level 14

» | Helpful post? (+2)

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Post #13
17511976 22 Oct 2018 22:40

In my one known case the "old" K9GAG08U0E-SCB0
after programming with the programmer, it worked for a year, a few other cases still work for months.
Helpful post

#14 17512440 23 Oct 2018 10:12

Adewag Adewag

Level 21

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Post #14
17512440 23 Oct 2018 10:12

GanCegall wrote:
Or maybe it is due to a total change in the technique of bone emergence? So, semi-warm

A suitable tip in a soldering iron, lots of tin. Or an old transformer soldering iron with a suitably made tip. NAND can be soldered many times in this way. Theoretically possible problem with electrostatics, but I did not damage the circuit. For convenience, you can raise the temperature of the plate with the preheater.
Helpful post

#15 17512561 23 Oct 2018 11:31

ppieciak ppieciak

Level 14

» | Helpful post? (+2)

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Post #15
17512561 23 Oct 2018 11:31

Adewag wrote:

GanCegall wrote:
Or maybe it is due to a total change in the technique of bone emergence? So, semi-warm

A suitable tip in a soldering iron, lots of tin. Or an old transformer soldering iron with a suitably made tip. NAND can be soldered many times in this way.

With such skill and sense of the equipment - the HOT-AIR can also successfully solder the same system several times.
Helpful post

#16 17512587 23 Oct 2018 11:52

Adewag Adewag

Level 21

» | Helpful post? (+1)

Helpful post
Post #16
17512587 23 Oct 2018 11:52

ppieciak wrote:
With such skill and sense of the equipment - the HOT-AIR can also successfully solder the same system several times.

If someone likes a little adrealinki, why not
#17 17512617 23 Oct 2018 12:04

GanCegall GanCegall

Level 38

» | Topic author Helpful post? (+1)

Post #17
17512617 23 Oct 2018 12:04

ppieciak wrote:
You can also successfully solder a few with HOT-AIR

In my case, these cubes fell from the booty, each one without exception.
Helpful post

#18 17512643 23 Oct 2018 12:21

ppieciak ppieciak

Level 14

» | Helpful post? (+2)

Helpful post
Post #18
17512643 23 Oct 2018 12:21

GanCegall wrote:

ppieciak wrote:
You can also successfully solder a few with HOT-AIR

In my case, these cubes fell from the booty, each one without exception.

Are the consequences of such soldering immediate or do they reveal themselves after some time?

I have sold more than one cube with HA and apart from a few cases of memory re-soldered after programming (actually with an unreliable programmer then) there were no problems.
#19 17526503 29 Oct 2018 19:16

GanCegall GanCegall

Level 38

» | Topic author Helpful post? (0)

Post #19
17526503 29 Oct 2018 19:16

ppieciak wrote:
Are the consequences of such soldering immediate or do they reveal themselves after some time?

New cube, without BB, surprisingly, without the famous 2073! works perfectly, and after desoldering with a hotem, it cannot be programmed ...
#20 17527341 30 Oct 2018 01:27

artur0089 artur0089

Level 25

» | Helpful post? (+4)

Post #20
17527341 30 Oct 2018 01:27

For best results, you need a native chip with a native firmware dump. The correct programmer (inexpensive "Easy-NAND Tiny Tools" & "UFPI") can do everything himself and correctly. New K9GAG08U0E do not always give 100% results.
Soldering into a TV programmed with an RT809H chip is the same as soldering a programmed purchased chip. The BB table is corrupted and now this chip can only be used at random. There is a lot of BB in these chips, but there is little information in the firmware. Either she does not get on the BB, or she is not very significant and the TV will work. But! This chip is designed to work with Smart and USB. And this means that some information will be constantly recorded in it. Due to the lack of a correct table BB, the information recorded during the operation will fall on the BB and the TV will break again. TVs are often brought in 6-12 months after the repair and it is already impossible to help a person, because K9GAG08U0E was programmed with the help of RT809H, ProMan or TNM or the purchased one was installed. Such a TV will not be brought back to you - the guarantee has passed, but there is no trust in you.
“Easy-NAND Tiny Tools” with new software can fully restore the performance of this TV platform. He adds the necessary BAD BLOKS to the table and recalculates the ECC.
#21 19692066 05 Nov 2021 18:31

GanCegall GanCegall

Level 38

» | Topic author Helpful post? (+1)

Post #21
19692066 05 Nov 2021 18:31

You can solder a used one .
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Topic summary

✨ The discussion revolves around the feasibility of reusing the NAND memory chip K9GAG08U0E-SCB0 after desoldering and reprogramming it. The original poster successfully resoldered a used chip that had previously caused issues with a TV restarting at the logo screen. Participants debated the reliability of used versus new chips, with some suggesting that older chips may perform better than new, low-quality replacements from China. Concerns were raised about the longevity and potential failure of reused chips, with anecdotal evidence indicating that some reused chips have lasted for extended periods post-reprogramming. The conversation also touched on the importance of using the correct programmer for optimal results and the risks associated with programming chips that may have bad blocks (BB).
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NAND K9GAG08U0E-SCB0 - does it make sense to solder the used one?

FAQ

TL;DR: Reusing a K9GAG08U0E can work: "old will perform better" and new lots show 5–10 bad blocks. Use a programmer that maps BB/ECC correctly, and solder with care. [Elektroda, lisek, post #17144634]

Why it matters: For TV repair techs troubleshooting boot loops, this FAQ shows when a used NAND is viable, which tools to trust, and how to avoid short-lived fixes.

Quick Facts

Typical bad blocks (BB) on "new" K9GAG08U0E lots: approx. 5–10 per chip. [Elektroda, lisek, post #17144634]
Reuse risk window: returns after 6–12 months if the BB table/ECC are mishandled. [Elektroda, artur0089, post #17527341]
Programmer choice: TL866 Plus (TL866A+) recommended; avoid TL866CS/TL866A; ProMan reported unstable reads. [Elektroda, lisek, post #17143388]
Typical cost to get TL866 Plus-class gear: about $110–140. [Elektroda, lisek, post #17143388]
"New" chips sold cheap: about $4.5 each, often minimum 5 pieces. [Elektroda, lisek, post #17144634]

Does it make sense to solder a used K9GAG08U0E-SCB0 NAND?

Yes. A tested "old" chip can outperform cheap new stock. “Certainly the old one will perform better than the new ones from China.” New batches often arrive with several bad blocks. Program it correctly, verify BB/ECC handling, and you can get stable results. [Elektroda, lisek, post #17144634]

How long can a reprogrammed used chip last in a TV?

Field reports show solid uptime. One technician saw a reused K9GAG08U0E run for a year after programming. Several other cases kept working for months. Longevity depends on correct BB/ECC handling and write workload in Smart/USB features. [Elektroda, ppieciak, post #17511976]

Which programmer works reliably for K9GAG08U0E?

Technicians recommend TL866 Plus (TL866A+). Avoid TL866CS and TL866A for this NAND. Reports also show ProMan/TL86 unstable reads on the K9GAG08U0E. Proper hardware minimizes read/write errors and data corruption risk. [Elektroda, lisek, post #17143388]

Are marketplace claims about ProMan/TL866 support accurate for this chip?

Be cautious. One verification found a listed “NAND ProMan Professional Programmer TL866 PLUS Programmer” did not actually support K9GAG08U0E despite the description. Always check verified support lists before purchase. [Elektroda, Adewag, post #17143118]

Can I rely on RT809H, ProMan, or TNM to program this NAND without issues?

Use with caution. “The BB table is corrupted” when programmed this way, causing random behavior and returns in 6–12 months. Prefer tools that preserve or rebuild the BB table and ECC for this platform. [Elektroda, artur0089, post #17527341]

How do I handle bad blocks and ECC correctly on this platform?

Use a tool that rebuilds the BB table and recalculates ECC. “Easy-NAND Tiny Tools with new software can fully restore the performance… adds the necessary BAD BLOKS… and recalculates the ECC.” UFPI is also cited as capable. [Elektroda, artur0089, post #17527341]

What does “BB” mean and how many are typical on new chips?

BB means Bad Blocks. Reports note “Almost all new” chips show BBs, often about 5–10 depending on the lot. Your programmer must map them out so firmware avoids those regions. [Elektroda, lisek, post #17144634]

Are cheap new chips worth buying over reusing the original?

Not always. One tech saw that for five “brand new” parts, only one or two were BB‑free. The rest required heavy BB handling. A proven used chip can be safer. [Elektroda, GanCegall, post #17144667]

What soldering method reduces risk when removing/attaching this NAND?

Use a proper tip and plenty of tin, or a transformer iron with a custom tip. Preheat the board for convenience. “NAND can be soldered many times in this way.” Mind ESD precautions during handling. [Elektroda, Adewag, post #17512440]

Is hot‑air rework safe if I have the right skills?

Yes, with skill and controlled temperature/airflow. “With such skill and sense of the equipment – the HOT‑AIR can also successfully solder the same system several times.” Practice on scrap boards before live work. [Elektroda, ppieciak, post #17512561]

What can go wrong when using hot air on this NAND?

Overheating or mishandling can damage the chip. One report: a new, working chip became unprogrammable after hot‑air desoldering. Treat this as an edge case and monitor temperature closely. [Elektroda, GanCegall, post #17526503]

Do I need the original firmware dump from the TV?

Yes, for best results. “For best results, you need a native chip with a native firmware dump.” That ensures correct platform data, including BB handling, before programming. [Elektroda, artur0089, post #17527341]

How do I prepare a used K9GAG08U0E for reliable reuse?

Read the native firmware dump from the original platform.
Use Easy‑NAND Tiny Tools or UFPI to add needed bad blocks and recalc ECC.
Program, verify, then install and test in the TV. [Elektroda, artur0089, post #17527341]

Why did reprogramming my original chip fix a boot‑looping TV?

The original NAND likely lost or corrupted content. After erasing and reprogramming, the TV booted cleanly and all functions worked again. Proper programming and BB/ECC handling restored stability in that case. [Elektroda, GanCegall, post #17143751]

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