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Today I tried to power up my helium bobcat miner with POE. I used the TP-LINK POE10R PoE Splitter, but after 1 minute the miner turned off and didn't power up anymore... 😦 I opened the miner and I discovered one component burned with the label "2132 BG". I have already searched for this component but I don't figure out what component it is. Someone can help me? 🙏🙏

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    \$\begingroup\$ Possibly 2132 might mean a component that was manufactured this year in week 32. The BG is the key part to uncovering its identity along with the package size (SMA, SMB, SMC etc) it's probably a diode and quite possibly a TVS diode but, I see no manufacturing logo. \$\endgroup\$
    – Andy aka
    Nov 27, 2021 at 18:19
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    \$\begingroup\$ What on earth is a "helium bobcat miner"? \$\endgroup\$
    – Hearth
    Nov 28, 2021 at 4:04
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    \$\begingroup\$ @Hearth - not knowing what a "helium bobcat miner" is, I found www.bobcatminer.com and now I still don't know what a "helium bobcat miner" is. \$\endgroup\$
    – abligh
    Nov 28, 2021 at 10:09
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    \$\begingroup\$ My understanding from reading about it: HNT (Helium Network Transfer?) is a cryptocurrency. You set up a Wifi network and get "money" for setting up the infrastructure and transferring data. It seems to me like someone wants to build a new telecom infrastructure. It's the logical step: after proof of compute power and proof of storage it now comes to proof of bandwidth. Good luck, Internet. \$\endgroup\$ Nov 28, 2021 at 10:53
  • \$\begingroup\$ It's obviously a Bobcat loader used to mine helium. \$\endgroup\$
    – Lundin
    Nov 29, 2021 at 10:03

1 Answer 1

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Probably a SMBJ13CA bipolar TVS, assuming it's an SMB

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    \$\begingroup\$ This device is intended to protect against input voltages much higher than about 12V. If you are lucky it may have failed short and prevented further damage. \$\endgroup\$ Nov 28, 2021 at 1:17
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    \$\begingroup\$ I removed the diode, powered up with the original power supply, and fortunately the hotspot working well! I already placed an order to replace this damaged diode. Thanks a lot! 🙏🙏 \$\endgroup\$
    – Rui Gaspar
    Nov 28, 2021 at 23:30
  • \$\begingroup\$ Power over Ethernet is using some >44VDC and this device, judging by the zener voltage, was meant to be powered from 12V. \$\endgroup\$
    – Lundin
    Nov 29, 2021 at 10:04
  • \$\begingroup\$ @Lundin Also the silk screen “12V” next to the barrel connector center pin. \$\endgroup\$ Nov 29, 2021 at 10:52
  • \$\begingroup\$ Yes, its 12v, but I used this 12v poe splitter: tp-link.com/us/business-networking/accessory/tl-poe10r In theory, it's should be working... \$\endgroup\$
    – Rui Gaspar
    Nov 30, 2021 at 21:52

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