EEVblog #1288 - Synology NAS Dumpster Find! (REPAIR)

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Is a brand new Synology DS415+ NAS in the dumpster too good to be true?
A tale of teardowns, repair, Intel Atom processor silicon degradation, and dodgy clocks.

#DumpsterDiving #Intel #Synology

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All the units replaced under warranty had the resistor mod that i have seen.

lukestone
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Leave a note in the dumpster room "Hey, I fixed your Synology - do you still have the power supply"

Boffin
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18:18 I'm gonna reiterate something I read online: "The next time you have trouble with your computer, remember that it is just a rock that we tricked into doing math."

bradnoyes
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Reminds me of how I fixed a Linksys SRX400 router once. It stopped functioning, so I opened up the board and started running my fingers across the circuits while the device was powered. On one occasion the unit came alive. I repeated the process a few times to confirm it wasn't a fluke. I noticed 2 traces with which my fingers were making contact. Measured my skin resistance with a multimeter, found a matching potentiometer. Soldered it in between the traces and got 2 more years of life out of the router.

enilenis
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The mainstream Intel chips at the time had a few issues with the hardware for the clock generation on the LPC bus that was used for low bandwidth I/O like TPM or embedded controllers.

I recall it was a problem bringing it up from a low power mode after sleep or something.

We mostly fixed it in firmware by disabling the sleep mode for that, I guess Atom didn't have the ability.
(We = the BIOS developers at Intel)

TimHoppen
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Thanks, Dave! You just enabled me to revive my DS415+. I thought the electric storm the other day blew it out, and since there were blinking yellow lights for one, then two, disks, I also expected to need to buy new drives. And with today's scandal with WD Red drives (SMD vs CMT or some such rubbish), I was not happy. But now I'm up and running, all drives were okay, and I even managed to find a 1/4W resistor in my stash (1981 vintage) to perform the repair. The 121GW pegged it at 103 Ohms, not bad for a 10% oldie. Cheers from Texas!

robert_g_fbg
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"Focus ya bastard!"

Hmm, familiar...

der_pinguin
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Thank you so much for this video!!! I've been using a Synology DS415+ since 2015, running 24/7 loaded with 4x 4TB drives. Yesterday (01/16/2022), for no apparent reason, it dropped off the network and I couldn't get it back. After a few reboots, I go the solid orange disk lights with flashing blue light. Completely dead. After doing some Internet research and finding this video, I took DS415+ apart, soldiered the 100ohm resistor across pin 1 & 6 and wow...it's back online! Wonderful! Thank you for the great instructional and explainer video. Saved me $$$ to replace my NAS (at least for the time being).

ToddBermensolo
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My 415+ developed this fault Dec. 20, after more than 5 years of use. It’s now working again thanks to this video. $$ saved and e-waste reduced !! Thanks so much for the content.

richardnutton
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clock signal is negative(grounded) and pullup via internal diode. when diode is gone there is no more positive voltage

diagtula
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It may have been used, but looks brand new. The system software is stored on a small partition on the disks in the trays. The small DOM you saw inside the unit contains the rescue partition, which basically allows you to access it to set it up. If you try and set one up with no disks inside, it'll complain, as it has nowhere to put the Diskstation manager. In fact, if you're upgrading to a newer model, you can move the disks from the older one to the newer one, and after a repair, which basically changes some configuration files to suit the new Diskstation, it takes on the identity of your old one, including all the settings, just with the new model number and additional bays.

dashbrj
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I have the exact same NAS. I have done the fix on at least 5 of them so far.

lukestone
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We have had two of these exact model working at our school for years now and they have been great. Not to worried if they fail because they are only sync backups but good to know about the fix. Thanks

nemisis
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Hello! Just wanted to let you know my 415+ stopped working 2 weeks ago. Then I found your video, ordered the resistors and the bios battery and just finished the repair. Worked like a charm! I can connect to the web interface again and all my data is still there. Thank you very much! #righttorepair

Dater
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I fixed my 415+ today following this video. Thanks so much, everything is up and running again.

xde
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Don't buy a power supply, bodge one up!

babbadge
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Greetings: Use a 1K trimmer to vary the pull-up and watch the clock variation.

jamesmdeluca
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I have a ds1815+ and it has the 100ohm c20xx fix installed from the factory. The next common bug with the 2015 synology nas's is that when powered down they will not power back up. One fix to that is to solder a 1000ohm resister between pads at the Q4 transistor. That unfortunately did not fix my nas. By the way Synology, knowing these nas's were defective, happily replaced mine every time it failed (four times in total) until the warranty of course expired. Then they tell you can can save your data (60TB in my case) by buying a new $1000 DS1821+!!!

I searched and searched for a solution to the no startup problem and came across a suggestion to simply short the connection between a green and black wire in the 24 pin connector (the 3rd and fourth pins from the right side) and the nas would boot. When I did this my nas powered on, to my surprise. I did not like the idea of power off though by simply yanking the power cord, so I installed a switch. To power on you just close the switch and to power off you do a normal shutdown from the menu and when all the drive lights go out you just open the switch.

It scrubbed all the drives and has been working ever since and I saved blowing $1000 on a ds1821+!

ctbram
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This issue just popped up this morning after 7 years of continuous service, and I found the "100 ohm resistor fix" on a number of blogs/forums/etc but I was dissatisfied with the general lack of explanation of what the actual problem was or why this fix fixes it - I dug a little further and found your video which not only satisfied my curiosity but also served as a friendly companion while I played along at home. Thank you!

PeterMetzger
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Just get a Meanwell power supply, they are about 25-30 USD for that amount of power

p_mouse