Re: HDD stops after about 2 minutes
I tried a fan and it's just the same.
I've only recently looked at the smart info and it shows as "Caution reallocated sector count" (image attached) which after a quick google search is supposed to be unfixable.
I think I should take the drive to my nearest river and give it a float test to determine if it floats or not.
I've heard seagate drives are notorious for sinking in water....
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: HDD stops after about 2 minutes
Update:
I got a replacement hard drive motherboard (used but working from Aliexpress) and successfully swapped the firmware chip from my bad drive to the new board as my pc recognised it straight away and I could access the files but, I
was back to square one with the drive stopping after 2 minutes.
So the board is very likely not the fault.
I also got a usb 3 docking station which allowed me to copy files from my dodgy drive for 2 minutes then I could switch the docking station off then on and it would carry on...
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Re: HDD stops after about 2 minutes
I've tried a different sata cable into a different port on the motherboard, it does the same thing.
I've already cleaned the connections on the back of the hard drive board with contact cleaner and cotton buds.
In the past hour I've managed a workaround.
Before I had to wait for the pc to boot into windows (about 1 minute 30 seconds) then I had about 10 or 20 seconds to access the drive.
But I now have the drive sitting outside my pc case and I can easily pull the power connector out of the drive then plug it back in again....
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Re: HDD stops after about 2 minutes
I had a look at the board with a magnifying loupe and this mosfet looks like it's a bit burned.
TR1 9
Would that cause the symptoms I am having?
The drive stops being accessible after about 2 minutes?
I forgot to mention in my first post that the drive carries on spinning after it stops being accessible or found on the system....Last edited by waigy; 10-28-2023, 10:16 AM.
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HDD stops after about 2 minutes
Seagate barracuda compute 6TB 3.5 inch drive.
When I power on my pc, at 1 minute 20 seconds I am into windows and I can see and access this drive.
But only for 20 seconds then it will freeze and disappear from my system.
So it won't be in device manager or computer management/storage.
I've tried lots of different hard drive software that runs from a usb boot stick and the same happens there.
The drive is only available for less than 2 minutes then it's gone.
Same in the bios, it shows when first opening the bios, but if I exit the bios then go...Last edited by waigy; 10-26-2023, 09:54 PM.
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What are these components that detect paper in a fax scanner
PROBLEM SOLVED
I DIDN'T REALISE MY SMALLEST SOLDERING TIP COULD JUST FIT BETWEEN THESE COMPONENTS.
I MANAGED TO REMOVE THEM WITH NO DAMAGE TO THE BOARD AND I HAVE MY INTENDED END RESULT.
On a Possio PM70 portable fax machine which has a scanner that detects when you push a piece of paper into the scanner slot.
It is these two small (3mm long) components that detect the paper and start the scanner feed motor which pulls the paper into the scanner.
(These are on the circuit board for the keypad and not the main board)
I want to disable these as...Last edited by waigy; 05-21-2023, 01:19 AM.
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Re: Portable fax machine thermal printer printing blocks of black with no text visibl
I still suspect the printer head might be either broken or just past it's normal operating life.
These machines are old now and I've seen thermal print heads stated as lasting around 10 years.
They are only supposed to work for so many metres of paper.
I took the print head out from its connecters and I don't know if it should have any continuity from one end to the other, but none of the pins at one end connect to any pin at the other end.
I was able to touch the heatsink...
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Re: Portable fax machine thermal printer printing blocks of black with no text visibl
I have found the data sheet for the chip on the right side which is upside down.
It is an A3967
I can't find datasheets for the other chips.
The two large chips say :
13CG3FK G4
AHC16373
And the smallest one can be made out easily in the attached image, I think it says :
16AF5KK G1
AHC00...
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Re: Portable fax machine thermal printer printing blocks of black with no text visibl
I'm struggling to figure out where the traces go.
There are no traces on the rear that come from those connecters.
Would you like close up photos of the board?
I have a soldering iron with a fine tip and I have replaced caps on boards successfully before eg. a 28 inch monitor.
But I have no experience of replacing larger components like chips that have multiple pins though I am a long time subscriber of Northridgefix so I know how things should be fixed.Last edited by waigy; 05-06-2023, 02:55 PM.
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Re: Portable fax machine thermal printer printing blocks of black with no text visibl
I had my multimeter in resistance setup and set to 200 ohms.
The L components all measured the same settling at 0.04 and the C components all gave a brief reading around 80 to 120 then went to zero.
These are the components to the left of the small connecter that is arrowed with my right most arrow ie: C900 to C903 and L900 to L903.
I have no idea if I'm using the multimeter correctly, but I had to press fairly hard on each solder connection to get a reading.
Are there any...Last edited by waigy; 05-06-2023, 12:15 PM.
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