[HowTo] Replace broken DOM module with a simple USB stick

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Re: [HowTo] Replace broken DOM module with a simple USB stick

Post by dolbyman » Tue Jan 21, 2020 10:47 pm

so did you update the firmware yet, before you inserted the disks?

how would we know if you performed the dom flash?..its your first post and no backstory given

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Re: [HowTo] Replace broken DOM module with a simple USB stick

Post by sal88 » Fri Jan 24, 2020 8:24 pm

Thanks for the reply and apologies if I wasn't clear. What I meant was that though I had gone through the motions of the dom flash I had doubts about whether I had done it correctly, as it didn't seem to make any difference. The firmware update was done a week before this failure.
I've managed to boot up now, and i1t would appear that my problem was actually a degraded raid, which I am trying to resolve now. I will create a new post.

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Re: [HowTo] Replace broken DOM module with a simple USB stick

Post by zplitt » Tue Jun 09, 2020 3:01 am

Hello fellas,

my Qnap nas broke and with a little google search i found this thread.

my TS-469 Pro was running, then i heard one long beep. the display went dark it didnt respond to any pressed button. many tries of booting failed, display showed "booting system" with arrows. forever. i connected a monitor via VGA, no signal. removed the harddrives, same problem.
reading this threat i thought a broken DOM could be the problem. i flashed an USB flash drive with a new firmwire using balena etcher. same problem.
i found another thread where one user figured out a broken RAM was the problem. so i replaced the original 1gb with a 4gb ram.
suddenly.. the monitor shows something!!

EFI Shell version 2.00
Current running mode 1.1.2
Map: Cannot find required map name

so a broken RAM wasnt the only problem. out of curiousity i checked the pin-out for the DOM and the flash drive and soldered a cable with a USB plug to the DOM. plugged it into my computer and the LED on the DOM was flashing. flashed it with balena etching again, LED flashed the whole time. so i guess the DOM is NOT broken.
i placed it on the motherboard of the nas again, but still "cannot find required map name" and the LED stayed dark.
so i thought maybe pins for DOM are not getting the required voltage, but the pins had exactly 5.0 volts.


now i am completely out of ideas..

is there any chance of rescuing my device?

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Re: [HowTo] Replace broken DOM module with a simple USB stick

Post by parkerc » Sat Jun 13, 2020 6:17 pm

Hi @zplitt,

if it’s not the DOM, then I’m not sure either- have you checked what the bios is reporting - attach keyboard/mouse to see if anything is missing?

While I have you, I could do with your soldering skills as I had replaced the DOM on my TS-453 pro, a while back, but it suddenly stopped booting (stuck on system booting) so I decided to take it apart to check the SD-card and reader I was using. (See if that had failed)

Unfortunately in the process of taking it a part I caught the DOM USB connector and pulled it off - doh !! (See photo). - I’m now in the process of buying a soldering kit to try and fix it :-(
You do not have the required permissions to view the files attached to this post.
Model Name : QNAP TS-253be (16GB) & TS-453 Pro (8GB)
Firmware Version:: QTS Latest
OS Version : Apple iOS (iPad/Safari Browser)
Number & Type of HDDs : 2 WD Reds, 3TB each, in Raid 1
Website (When I have time) : http://www.nodecentral.co.uk

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Re: [HowTo] Replace broken DOM module with a simple USB stick

Post by zplitt » Fri Jun 19, 2020 11:55 pm

Dont worry, soldering doesnt require much skill. Soldering your socket will be an easy job!
What i did with the DOM was not difficult either. Just googled the pin out for the usb header and here we go.

https://www.directupload.net/file/d/585 ... fr_jpg.htm

with only the the DOM attached to the motherboard, i get the "cannot find the required map name" error. I tried different firmwire versions. One from the link from the first post, and a few different versions from the Qnap helpdesk. When i flash the DOM with balena etcher, it tells me "one failed device". soooo maybe the DOM *is* broken.. My smallest usb flash drives are 4bg, so i tried one with the same firmwire an get no error messages from the flashing program. But only if use the firmwire from the first post. When i try to flash DOM or usb with the firmwire from Qnap, balena etcher tells me "missing partition table" and its not a bootable image. So i flashed the usb drive again, put the DOM back in, AND plugged the flash drive on the back of the TS-469 in.

Now i can acces the BIOS.

https://www.directupload.net/file/d/585 ... 9p_jpg.htm
https://www.directupload.net/file/d/585 ... ha_jpg.htm
"seems" like everything is working..

https://www.directupload.net/file/d/585 ... f3_jpg.htm
the error log. Anything suspicious?

i tried booting so many times, with so many different settings, it´s hard to tell now, wich method was the most succesful. With and without HDDs, with and without the flash drive, with a flash drive on the DOM socket, ...

https://www.directupload.net/file/d/585 ... o7_jpg.htm
https://www.directupload.net/file/d/585 ... hj_jpg.htm

the furthest i got was this:

https://www.directupload.net/file/d/585 ... 8y_jpg.htm

BUT: still "system booting" on the screen, first one long beep, the three long beeps in a row. Logging in doesnt work. I tried my own account, doesnt work. Then i tried the "admin" account. Only when i type "admin" for user, the "password" shows up. I type "admin" again, i get this message:

-sh: id: command not found
-sh: reset: command not found

i have read on the Qnap Homepage, that some Models use the MAC1 adress as password for the admin account, but still no luck.
any ideas?

PS: sorry for the links to the images, but i could not post it with [img].

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Re: [HowTo] Replace broken DOM module with a simple USB stick

Post by noncebig » Mon Jun 29, 2020 3:46 pm

Many compliments for your article, perfect technical chronicle and good courage to solve the trouble, without submit the expensive solution by Qnap support!
I had the same experience 1 month ago on a HS-251+ perhaps after the update Build 20200529, and I've done the same steps as you, also the mistake of USB complete disabling bacause trying to boot from it, causes irregular behavior.
But my doubt, how is possibile for this big brand, to lock a system for a component fault, with no emergency solution for drive reading or restore from external backup?
I want to ask you, if you have considered the replacing of the DOM component as I found on following:
https://www.cbo-do.de/Server-Components ... 57245.html#
I hope this could be a possible solution before completely changing the storage, not only to recover my data, but for technical satisfaction.
Thank you and let me know how is now your experience with Qnap.
Best regards.

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Re: [HowTo] Replace broken DOM module with a simple USB stick

Post by roborla » Sun Aug 02, 2020 3:16 pm

Hi my name is Roberto and I write from Italy. I have a problem with my ts 453 pro qnap which I purchased used but defective. I followed your very interesting procedure, but I was unable to get it started again. it always remains in System booting despite having removed the DOM and put the usb port with a stick with the system downloaded from your indication for my NAS. Could you give me some more suggestions? what could be wrong? you can hear us in my email: orla0099@gmail.com
thanks I await your reply and cordially greet Roberto

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Re: [HowTo] Replace broken DOM module with a simple USB stick

Post by zplitt » Thu Aug 06, 2020 4:06 am

I was lucky to be able to borrow a running DOM unit from a TS-669 Pro, which i plugged in my TS-469 Pro. Guess what - it´s running! Qfinder recognized the nas as TS-669 Pro, of course.

Therefore i tried replacing the DOM with a flash drive. Again. I checked the pins multiple times and measured the voltage on the pins.

The firmwire image from the first post is from 2014, so i tried a newer one from the qnap support page, but they seem not to be bootable. Balena Etcher tells me "missing partition table". Even if i still try to flash a stick, Balena tells me "1 failed device".

Is there a specific Boot Priority to set in BIOS? In my case: 1. Internal Shell 2. USB HDD 3. USB FFD .. and so on.

With a flashed stick connected to the DOM socket, i get the "cannot find required map name" message.
With NOTHING on the DOM socket, but the same flash drive plugged on the BACK of the nas, i get to the login screen, but with no luck as i wrote above and still "system booting" on the screen.

This is driving me nuts..

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