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4,035 Views • May 24, 2023 • Click to toggle off description
Views : 4,035
Genre: Science & Technology
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Uploaded At May 24, 2023 ^^
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RYD date created : 2024-06-07T15:02:04.213098Z
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47 Comments
Top Comments of this video!! :3
If you're still taking comments, check that the power adapters are the correct Voltage AND AMPS, or current. This requirement data is usually on the manufacturers spec decal, generally located next to the power input or the serial and model number sticker. If your adapters are lower in volts and current than specified, that MIGHT explain the malfunction. Otherwise probably DOA.
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Do you get any response from the com port on the back? My best guess is wrong power adapter was plugged in at some point and fried them. The best chance is the one that is totally dark. Maybe its stuck in rommon mode. I'm that case you could try to re-upload firmware to it.
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Voltage is only half the rating for a power supply - you also need to know it's current (mA or A) rating. If the power supply cannot supply enough 'current' then the switch may not start properly. I recommend you download the manual for the switch and check what the power supply rating (volts and amps) should be. Also make sure the polarity on the plug is correct.
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the lower switch seems to be damaged, since there are light indicators at "on" while there are no ethernet cables plugged into them. try to make a hard reset by pressing the reset button while the adapter is unplugged... press and hold the reset button while the power adaptor is unplugged, count about 10 seconds, then while the reset button is still held pressed, plug the power adaptor and count another 10 seconds or more and release the reset button. this process should fix any bug if the switch is not yet permanently damaged.
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You said "new" but judging by their condition and the power adapters I'd assume you meant "new to you", so used. Were they stated as working by the seller? Return or exchange them if you can.
Check the specs for the power adapter needed, the one you showed is 12 volts DC at up to 2 amps, if the switch needs more voltage or current then try something else, just don't exceed the voltage.
As others have mentioned, if these are managed switches, you can hook up a console to see whats happening, if anything. Learn how to do that if you don't know.
If you have electronics skills, or you know someone who does, you could check things with a voltmeter. The output of the power adapters, or pop the covers on the switches and check the internal power.
Good luck.
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I would try a different power adapter. Then use a console cable and see if there is any output there. If not they are most likely bad. Depending on where you got them, return them.
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Why is no one mentioning that you can turn ports on/off in the software. Boot the thing up, connect into it and factory reset it maybe.
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Check the console port output if they have one
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If power supply is same voltage and amps, return the switches, they are dead.
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What do you do with your homelab?
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Check the polarity, and voltage of the PSU adapter. You might have to install the firmware. I hope you got the appropriate Serial Cable. If not, that government auction that you bought them from screwed you over.
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Return them and get new ones.
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Find an electronics technician. Seems like a hardware issue. Also check if the output power of your power supply is enough (likely they're okey)
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Maybe try to reset them?
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switch to mikrotik
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It mean RMA
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Bash them if you can fix it
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call cisco :)
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I think the thing is broken
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@mariushmedias
1 year ago
The one that doesn't turn on at all, open it up, it may simply be a case of an open fuse or bad power connector on the circuit board (cracked solder, broken traces from the barrel jack connector) or it could be the dc-dc converter chip faulty. Some switches have the power supply separate from the main board, so you could get a separate power supply and replace it.
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