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Flash in Nokia 3120C?

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bos

Post subject: Flash in Nokia 3120C?

Posted: February 3rd, 2025, 6:33

Joined: October 20th, 2014, 5:25
Posts: 191
Location: Sweden

So this phone landed on our desk. Phone is more or less dead - some activity when trying to power on, but never starts up - and we fail to repair it. A shorted MLCC was found using FLIR and it was replaced so the short was gone. Hooking up the phone to the lab supply it consumes 1mA, and when pressing power button it goes up to 15mA but never turns on.

Looking for the NAND but find no common denominator on the chips so I'm unsure if this is a special one. The largest one caught our attention, it's marked SPANSION 72NS512 (datasheet: https://www.farnell.com/datasheets/1814146.pdf) but looks more like a controller of some sort.

Attaching photos. Can anyone find a NAND-chip?

Attachments:

IMG_20250203_100949_1.jpg [ 1.15 MiB | Viewed 23236 times ]

IMG_20250203_100943_1.jpg [ 1.12 MiB | Viewed 23236 times ]

IMG_20250203_100934_1.jpg [ 1.31 MiB | Viewed 23236 times ]

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vx1

Post subject: Re: Flash in Nokia 3120C?

Posted: February 3rd, 2025, 7:34

Joined: November 5th, 2015, 18:00
Posts: 81
Location: in the lab

Have you checked this yet?

Attachments:

IMG_20250203_100943_1a.jpg [ 325.51 KiB | Viewed 23212 times ]

IMG_20250203_100949_1a.jpg [ 351.62 KiB | Viewed 23218 times ]

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bos

Post subject: Re: Flash in Nokia 3120C?

Posted: February 3rd, 2025, 7:44

Joined: October 20th, 2014, 5:25
Posts: 191
Location: Sweden

Sharp eyes! I missed that one completely. Will dig down and see what's up.

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bos

Post subject: Re: Flash in Nokia 3120C?

Posted: February 3rd, 2025, 9:03

Joined: October 20th, 2014, 5:25
Posts: 191
Location: Sweden

These two are now repaired but the behaviour is the same; increasing amperage goes up to 15mA but phone does not start.

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vx1

Post subject: Re: Flash in Nokia 3120C?

Posted: February 3rd, 2025, 9:40

Joined: November 5th, 2015, 18:00
Posts: 81
Location: in the lab

It's not the same PN, but it was the closest I found
look for 72NS512 alldatasheet
https://files.hddguru.com/download/Data ... 274283.pdf

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vx1

Post subject: Re: Flash in Nokia 3120C?

Posted: February 3rd, 2025, 10:11

Joined: November 5th, 2015, 18:00
Posts: 81
Location: in the lab

Nokia 3120
https://files.hddguru.com/download/Data ... 4_v2.0.pdf

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fzabkar

Post subject: Re: Flash in Nokia 3120C?

Posted: February 3rd, 2025, 13:32

Joined: September 8th, 2009, 18:21
Posts: 17230
Location: Australia

https://elektrotanya.com/showresult?what=Nokia%203120C&kategoria=All&kat2=All

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dick

Post subject: Re: Flash in Nokia 3120C?

Posted: February 3rd, 2025, 14:11

Joined: January 8th, 2008, 5:21
Posts: 927
Location: uk

This one needs might need attention as well. Top left.

Attachment:

nokia.jpg [ 869.09 KiB | Viewed 23087 times ]

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fzabkar

Post subject: Re: Flash in Nokia 3120C?

Posted: February 3rd, 2025, 14:50

Joined: September 8th, 2009, 18:21
Posts: 17230
Location: Australia

bos wrote:

Phone is more or less dead - some activity when trying to power on, but never starts up - and we fail to repair it. A shorted MLCC was found using FLIR and it was replaced so the short was gone. Hooking up the phone to the lab supply it consumes 1mA, and when pressing power button it goes up to 15mA but never turns on.

Did you measure the voltage at the MLCC afterwards? If it is still 0V, then the DC-DC converter may have failed.

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pepe

Post subject: Re: Flash in Nokia 3120C?

Posted: February 4th, 2025, 3:21

Joined: October 3rd, 2005, 0:40
Posts: 4816
Location: Hungary

it also seems like some components are missing, see pic, bottom right.

Some phones have MCU, RAM and flash stacked on top of eachother, pretty challenging to work with.

Attachments:

Capture.PNG [ 179.61 KiB | Viewed 22990 times ]

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Sasha Sheremetov

Post subject: Re: Flash in Nokia 3120C?

Posted: February 5th, 2025, 17:37

Joined: July 2nd, 2014, 8:05
Posts: 215

bos wrote:

Attaching photos. Can anyone find a NAND-chip?

Can't find NAND but found NOR

That BGA 72NS512 is a NOR+RAM multi-chip package, 16-bit databus, 17-bit address bus, here's its block diagram:

Attachments:

Screenshot 2025-02-05 223208.png [ 61.23 KiB | Viewed 22854 times ]

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HaQue

Post subject: Re: Flash in Nokia 3120C?

Posted: March 31st, 2025, 0:43

Joined: December 4th, 2012, 1:35
Posts: 3975
Location: Adelaide, Australia

The FlashcatUSB XPORT or Mach1 may be able to read the NOR portion with correct wiring, and maybe level shifters if the chip is 1.8v

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