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Flash in Nokia 3120C? http://forum.hddguru.com/viewtopic.php?f=10&t=45083	Page 1 of 1

Author:

bos [ February 3rd, 2025, 6:33 ]

Post subject:

Flash in Nokia 3120C?

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 22766 times ]

IMG_20250203_100943_1.jpg [ 1.12 MiB | Viewed 22766 times ]

IMG_20250203_100934_1.jpg [ 1.31 MiB | Viewed 22766 times ]

Author:

vx1 [ February 3rd, 2025, 7:34 ]

Post subject:

Re: Flash in Nokia 3120C?

Have you checked this yet?

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IMG_20250203_100943_1a.jpg [ 325.51 KiB | Viewed 22742 times ]

IMG_20250203_100949_1a.jpg [ 351.62 KiB | Viewed 22748 times ]

Author:	bos [ February 3rd, 2025, 7:44 ]
Post subject:	Re: Flash in Nokia 3120C?
Sharp eyes! I missed that one completely. Will dig down and see what's up.

Author:	bos [ February 3rd, 2025, 9:03 ]
Post subject:	Re: Flash in Nokia 3120C?
These two are now repaired but the behaviour is the same; increasing amperage goes up to 15mA but phone does not start.

Author:	vx1 [ February 3rd, 2025, 9:40 ]
Post subject:	Re: Flash in Nokia 3120C?
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

Author:	vx1 [ February 3rd, 2025, 10:11 ]
Post subject:	Re: Flash in Nokia 3120C?
Nokia 3120 https://files.hddguru.com/download/Data ... 4_v2.0.pdf

Author:	fzabkar [ February 3rd, 2025, 13:32 ]
Post subject:	Re: Flash in Nokia 3120C?
https://elektrotanya.com/showresult?what=Nokia%203120C&kategoria=All&kat2=All

Author:	dick [ February 3rd, 2025, 14:11 ]
Post subject:	Re: Flash in Nokia 3120C?
This one needs might need attention as well. Top left. Attachment: nokia.jpg [ 869.09 KiB \| Viewed 22617 times ]

Author:	fzabkar [ February 3rd, 2025, 14:50 ]
Post subject:	Re: Flash in Nokia 3120C?
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.

Author:

pepe [ February 4th, 2025, 3:21 ]

Post subject:

Re: Flash in Nokia 3120C?

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.

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Capture.PNG [ 179.61 KiB | Viewed 22520 times ]

Author:

Sasha Sheremetov [ February 5th, 2025, 17:37 ]

Post subject:

Re: Flash in Nokia 3120C?

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 22384 times ]

Author:	HaQue [ March 31st, 2025, 0:43 ]
Post subject:	Re: Flash in Nokia 3120C?
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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