SAMSUNG K9GAG08U0E

spektar65

Hello,
I have an issue with programming this IC. Programmer T56 shows bad sectors, and I have the options of replace, hard copy and skip. With skip option it does the programming, but it does not do it properly as the motherboard doesn't work with the IC back on the motherboard. Is there a solution for this problem?

Thank you

STALKER_71

Use hard copy. Maybe in verification you have error in bad block but always it work.

spektar65

I don't have a hard copy, only a skip, but it doesn't program properly because the TV is still resetting.

STALKER_71

In options tab must be hard copy.

admin

回复 1# spektar65

This is a problem that is easy for professional technicians to understand, The solution for ordinary customers: find a chip that  have not bad blocks. use hard copy.

spektar65

I am a professional and I understand. The problem is to find a chip without bad sectors. I got a few from China and each had them.
Colleagues with other programmers like RT809h manage to reprogram the old chip while me fail with T56.
Is there anywhere to buy a reliably good chip?

admin

回复 6# spektar65

There is no universal algorithm for skipping bad blocks.No Programmer can do it automatic for the data read from the chip. You will know if you try more testing.
The skipping of bad blocks must be written in the partition method, and the partition table must be load or set correctly.
If you know  the partition of this chip, you can try to skipping bad blocks.
others:
Not only the partition problem, but also the bad block index table, and the physical address conversion, some of the content maybe not stored in the NAND FLASH.

spektar65

ThanksWhere to buy a reliable chip?

admin

回复 8# spektar65
1. Change the chip to write, if the mother chip is blank  in bad block of target, it can be programming normal.
2. Buy different batches of chips from different sellers

STALKER_71

Some programmers can do auto bad block managment. One of it UFPI.

admin

回复 10# STALKER_71
In principle, it cannot be universal, but it is possible for a specific TV or other equipment.
The same model of equipment with different production dates may not be universal.

Only the early Linux simple bad block management solutions can be auto, but this has been eliminated and it is no useful.

STALKER_71

Ofcourse its not universal. Some kind of have defferent types if bad block managment. UFPI it's only example how it work with this function.