Eeprom dump thread!

[jimbofz]

Re: Eeprom dump thread!

can anyone help with eeprom dump for
TECKNIKA LCD32-56 board :cv306 h-x 27t1005a
contacted umc, they supplied incorrect f.w: cv306_merge.bin
now menus wont come up ,
(original fault loss of sound after 3 seconds)

[lotas]

Re: Eeprom dump thread!

can anyone help with eeprom dump for
TECKNIKA LCD32-56 board :cv306 h-x 27t1005a
contacted umc, they supplied incorrect f.w: cv306_merge.bin
now menus wont come up ,
(original fault loss of sound after 3 seconds)

Do you still have the native, not working dump?

[jimbofz]

Re: Eeprom dump thread!

yes i have the cv306-merge.bin file from umc

[jimbofz]

Re: Eeprom dump thread!

heres the bin file from umc
sorry when i try to upload .bin file i get invalid file message?

[lotas]

Re: Eeprom dump thread!

yes i have the cv306-merge.bin file from umc

No, I need to dump his old native (not working), which was before the update.

[jimbofz]

Re: Eeprom dump thread!

ok i will remove eeprom
and read and save the contents .using my ch341
but how do i upload the bin file on this forum ?
as .bin files cant be uploaded?

[lotas]

Re: Eeprom dump thread!

The file (Dump), which you now want to read, has already been updated with an incorrect "cv306-merge.bin" file, but I need it before the update, the bin file can be packed into winrar.

[jimbofz]

Re: Eeprom dump thread!

removed spi read and packed to winrar

[jimbofz]

Re: Eeprom dump thread!

heres the umc supplied MERGE ..bin
heres hoping you can help thanks

[lotas]

Re: Eeprom dump thread!

removed spi read and packed to winrar

How do you read dump? your dump size is very large, I asked you that you have an old dump left, the one that you did not update with the update.

[jimbofz]

Re: Eeprom dump thread!

sorry my mistake .i did not read the data before the update
the tv was fine but no sound ,after the umc update no menu or sound

i read the spi using ch341a the spi number is 25q328vsig
the nearest on the list of programmer ,i used w25q256fv
does that matter ?
im still learning as ive only used the ch341a a few times
i did try the update a few times ,could that be why the dump is larger than normal?

[lotas]

Re: Eeprom dump thread!

Is it native spi flash? There should be 25Q32 or 25Q64, but not like 25Q256.
And if there is no sound, this does not mean that the matter is in the firmware, there may be another problem in the hardware.
Do you have such a mother?

[jimbofz]

Re: Eeprom dump thread!

this ic is the original
it does not look like it was changed in the past
its possible that the spi number is 25q32"b"vsig
not 25q328vsig
as the markings are so small ive used two magnifiers to get the best chance of accurate reading
the pic looks similar but not the same
the board markings are CV306H-X
then the second number is 27T1005A D
I should add the original fault was :the sound would be ok for a few seconds

[lotas]

Re: Eeprom dump thread!

Count again, like 25Q32, and lay it out again, the size should be 4Mb.

[jimbofz]

Re: Eeprom dump thread!

here it is fingers crossed

[lotas]

Re: Eeprom dump thread!

Try

[jimbofz]

Re: Eeprom dump thread!

thanks lotas
should i erase the spi with ch341a first?
then load the fresh dump to it ?
or should i refit the chip in tv then use usb to write fresh dump

[lotas]

Re: Eeprom dump thread!

On the programmer - erase, write down my dump, check and solder back to the motherboard.

[jimbofz]

Re: Eeprom dump thread!

thanks for all your help
now i have same fault
so i will order a new spi chip and reload your dump
it could simply be the chip is faulty
all the supplies are good and clean
i will report back

[lotas]

Re: Eeprom dump thread!

If you saved your old dump before updating via usb, then you could know for sure whether the problem is in the firmware or not. Always before experimenting with your firmware, you need to make a backup of your dumps, so that if something is wrong, then they can be returned back.