Cisco 3750 POE arcing problem

[MrNIBIRU666]

Tr 6418  -15 volts regulator on a thermal-runaway, cheap component layout, No clear manufacturer budget, happens on " Promotions Productions"

[ThatKidKnows]

Well, There's Your Problem! 

[ChristopherBinnie]

If Cisco used the Silvertel Ag6400 (4-channel PSE controller module) reliability would be higher, and they could also get up to 30W per RJ45 (IEEE802.3at).

[ruderuud]

@dwC4u wahahha, Revenge of the nerds...

[letseeitplease]

get crisco not cisco

[Guitarjammers01]

I hate this video. I'm the guy that has to repair these units. And seeing the end user making the repair harder to fix makes me want to cry lol. Get one PoE controller down and it shuts all PoE down.

[dwC4u]

@Guitarjammers01 Hah.. This is the only time we did this. However, we are constantly RMA'ing 3550's and 3750's with various issues so taking one out of the lot to play with for 5 minutes isn't too bad :P The 3550 PSU issue was driving us nuts there for a few years. We were having to replace one a week!!!

[nalathnuur]

@Guitarjammers01

im the girl than "has to fix all the shit" including broken hardware. i work as admin for 4 months, but somehow, they give me the most f*cked jobs.

i've saw a firework switch just like this (but netgear) and the admin was still expecting i repair it:P

BWT... i have to debug lots of VPNs and Cisco stuff and Cisco support isnt the best =S

in 4 months i've learn 10 times more than in a year of colledge

[JerryGiesler09]

0:24-0:30 The motherboard is saying "Leave me alone!" and blew an arc at the camera man

[chrisgapske]

hmm well cisco can kinda suck When I worked at verizon wireless we use a cisco router I will not mention names but it cause a few of our Kiosks to burn down sometimes part of the malls they were in..

[jaymann55]

I know how to fix that ...... Buy HP switches (Lifetime Warranty)

[HWGuyEG]

What ever happened to the only dangers being MOre Sparky Fire Emitting Transistors?

[6Diego1Diego9]

wait till you see a psu blow in a 6500...

[HWGuyEG]

Do flaming caps shoot out like little rockets exploding from their top or side?

I've seen that happen when the $9 AT PSU in a $24'000 flatbed scanner fried.

Then the fucks at the company wanted $1700 to repair that hazard.

Instead I fixed it myself and reported them for making a hazardous product.

[6Diego1Diego9]

lol not that bad haha

[TurnerzworldCorp]

Hmm, cisco did a HUGE recall on that, it was a design error. The POE caps were too close to a transistor heatsink, and the original japanese capacitor vendor's caps worked fine, it was until they introduced a lower cost capacitor which had issues dealing with heat.

:)

[ChrizRockster]

Its rather worrying considering they dominate the Enterprise market and people pay a lot of money for their products and support.

I will be positioning my Cisco AP's near fire extinguishers in future!

[harleyguy56]

Does this fire hazard feature come standard? Has Cisco recently acquired a fire suppression system company?

[Choppergage15]

Cisco r lot money to pay for that like a 1,000 in one switch, thats sick

[Paradiddler45]

More like about $4000...

[gavincurtis]

Replace the bad capacitor, clean up the damage to the board and it will probably work fine again.

[Skrewstoned]

lol or you can do what i do and just RMA the damn thing to cisco and assign it a priority 1 to get a replacement the next day.

we mainly have issues with 4506 blades going bad.

the ports begin to flap slowly until the 8 go bad. then the next 8. until the entire blade is completely down. happens quiet frequently. once or twice a year. for 1 blade.

but only on some 4506. it seems to be the actually chassis.

[polytechnickk]

Now we know where they got the "Catalyst" name from!

[NoWattz]

thats funny "Those damn tantalums again" I had that very same thought. Just the slightest over voltage and they sizzle. They don't seem to react very well to rf fields either.

[gavincurtis]

Those damn tantalums again.

[VideyoJunkei]

I found they would short out sometimes in tv sets...one particular model would lose the tuner when this happened.

[dwC4u]

Try doing a google search for 'Cisco 3750'

[Thamasigsrp]

what is that a surver

[sundevil04]

yeah a fire server. running linux on a Core 2 Quad with 8 gigs of ram.