Question about faulty nand flash chip in Samsung TV

[sickboy]

Hi, I obtained a big Samsung ps51d6900dk TV today which would switch on, display the Smart TV logo, then start cycling on and off.
I froze IC1302 flash chip to see if this was the fault and the set stayed on. That was several hours ago now and the TV is still functioning correctly. I can turn it off and on again and it stays on every time.

Now, my question is.. have I fixed it or is it inevitable it will do it again sometime soon? Also, while it's working, if I upgrade the firmware will that help prevent the fault returning?

I can see these chips are available on ebay for around £60. While that may or may not be worth it for a 7 year old tv, I'm just not sure my soldering skills are up to such a job. Can anyone give any advice?
Thanks!

[sickboy]

Re: Question about faulty nand flash chip in Samsung TV

Anyone?

[diif]

Re: Question about faulty nand flash chip in Samsung TV

Photos always help to identify what you are talking about.
I've bought Samsung NAND chips off ebay but they were £18 and needed replacing because of bad blocks, freezing wouldn't fix that.

[sickboy]

Re: Question about faulty nand flash chip in Samsung TV

Apologies, this is the chip in question.

[vinceroger69]

Re: Question about faulty nand flash chip in Samsung TV

Diff do these replacement chips need re programing or do they come with the firmware on them as nand programers seem too be expensive

[diif]

Re: Question about faulty nand flash chip in Samsung TV

Diff do these replacement chips need re programing or do they come with the firmware on them as nand programers seem too be expensive

I paid about £120 for my NAND programmer and buy blank chips.
The chips I've seen on ebay are advertised as pre programmed.

There's no guarantee freezing fixed it permanently or didn't. The NAND usually fails due to bad blocks.

[vinceroger69]

Re: Question about faulty nand flash chip in Samsung TV

I paid about £120 for my NAND programmer and buy blank chips.
The chips I've seen on ebay are advertised as pre programmed.

There's no guarantee freezing fixed it permanently or didn't. The NAND usually fails due to bad blocks.

Thanks diif ive had too have a break from doing any repairs due too working loads of overtime at work, but getting back into doing repairs now and buying some new repair equipment have you got a link too the programmer you use thanks

[diif]

Re: Question about faulty nand flash chip in Samsung TV

It's the GQ-5X programmer. It's the only sub £150 NAND programmer I found that did the Samsung NAND in the D series Samsungs.

[sickboy]

Re: Question about faulty nand flash chip in Samsung TV

It's the GQ-5X programmer. It's the only sub £150 NAND programmer I found that did the Samsung NAND in the D series Samsungs.

Hi Diif, if it turned out that I need one, can I buy one from you?
TV is still behaving perfectly so far though.

[raileanu]

Re: Question about faulty nand flash chip in Samsung TV

Va rog aveti un dump NAND pt aceasta placa am incercat cu 24C256 dar e aceasi problema se restarteaza in logo

[Davi.p]

Re: Question about faulty nand flash chip in Samsung TV

pezzodemmiedda, no good to hijack other one's thread..

[raileanu]

Re: Question about faulty nand flash chip in Samsung TV

Va rog aveti un dump NAND pt aceasta placa am incercat cu 24C256 dar e aceasi problema se restarteaza in logo

I found a link for a good NAND dump and I fix the TV already.