Synology NAS - Page 1
Forum section: electronics / repair

author: IAmBack
author_rank: Regular Contributor
timestamp: April 14, 2018, 09:46:29 am
content: Hi.My Synology DS415+ started to lose password/network settings (and even lose whole system too) over and over again.IMO this behavior can be caused by the faulty reset circuitry (because random pressing reset in "healthy" can led to the same behavior).Maybe power supply on the board, but I suspect dust (with little probability) or some mlcc failure in the reset circuitry. This suspection is because when it went to relatively stable state (only resetting password/network every several minutes), i pressed reset - and then it started to reset by itself more frequently and more "deeply" (it lost the system again).Anyone has any experience with this unit and/or such behavior?Regards.

author: Marco
author_rank: Super Contributor
timestamp: April 14, 2018, 12:47:00 pm
content: They offered someextended warrantyon that one because the Intel CPU had a serious bug which madeit stop working(it doesn't sound quite what's happening to you, but who knows).

author: HighVoltage
author_rank: Super Contributor
timestamp: April 14, 2018, 01:02:23 pm
content: Have you tried to reset the NAS with the installation of the latest software?This helped one of my Synology NAS to come back alive.Your Data should be safe! I never lost any data on a Synology NAS.

author: bob225
author_rank: Frequent Contributor
timestamp: April 14, 2018, 02:33:00 pm
content: That signs of a dying HDD,The hdd may be spiking the 5 and 12v lines causing it the reset iirc it common with Seagate drivesAlso check the fan hasn't seized or to badly worn, It maybe pulling to much current when the fan starts

author: IAmBack
author_rank: Regular Contributor
timestamp: April 14, 2018, 09:11:47 pm
content: Quote from: bob225 on April 14, 2018, 02:33:00 pmInteresting suggestion, thank You. I'll try to install some hdd to check this out. Btw, discs are HGST.

author: IAmBack
author_rank: Regular Contributor
timestamp: April 14, 2018, 09:12:58 pm
content: Quote from: Marco on April 14, 2018, 12:47:00 pmMy issue looks different. BTW, cure for this is 100 ohm resistor.

author: IAmBack
author_rank: Regular Contributor
timestamp: April 14, 2018, 09:14:26 pm
content: Quote from: HighVoltage on April 14, 2018, 01:02:23 pmI had to, because it was "out of system". I tried to do it several times. Sorry not this way.

author: IAmBack
author_rank: Regular Contributor
timestamp: April 15, 2018, 01:06:53 pm
content: Quote from: IAmBack on April 14, 2018, 09:11:47 pmI've put inside different HDD, and NAS works fine (about 1hr so far). Problem is, that I've put inside a small laptop 500G HDD, while NAS failed with 2x3TB HDDs (with different power consumption). So problem may be with HDD(s) or the unit itself... I've no spare "huge" HDD to do any reliable tests.

author: bob225
author_rank: Frequent Contributor
timestamp: April 15, 2018, 01:34:42 pm
content: I run 2 215J's with WD RED's and a 115j with a WD Purple for my IP cameras after years of buffalo linkstations dying and eating disc'sI recently repair a all in one pc, The bearing seized it smoked the control board and melted the molex

author: kulla
author_rank: Unknown
timestamp: April 15, 2018, 06:41:16 pm
content: It's quite possible that hdd was faulty and because of it took a bit too much current so it caused that the data that were read/written from internal storage got corrupted. That would explain behaviour.Had that on one old AX150i SAN, but that one had few more issues beside that.

author: IAmBack
author_rank: Regular Contributor
timestamp: April 17, 2018, 10:23:25 pm
content: Marco was  right.Following advice from the Synology support I did some dust cleaning (and some usual, not published) magic gestures like taking memory out and putting it back), and also did something beyond the advice - I've added the 100Ohm resistor to the MB (some images of this OEM "hack" were posted on one of Siglent user forums). This solution is proposed by Intel whitepapers. Server now runs fine for 24h+ on HDD SMART tests. So, crossing my fingers, I can report that the server is OK now. Thanks to all contributors.