roc-noc.com, this is the RB450G though.Who did you buy your RB450 from?Hi,
I'm sorry to report that my RB450G died today - looks like faulty capacitors
This unit was purchased on March 2009.
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roc-noc.com, this is the RB450G though.Who did you buy your RB450 from?Hi,
I'm sorry to report that my RB450G died today - looks like faulty capacitors
This unit was purchased on March 2009.
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Roc-noc is where I received my bad 20+ RB450s. I wonder if they received most of the bad shipment. Unfortunately Tom has 6 of my defective RB450s and wont return them either fixed or for me to solder myself. Hopefully Tom can advocate for us with Mikrotik since he's been left holding the bag.roc-noc.com, this is the RB450G though.Who did you buy your RB450 from?Hi,
I'm sorry to report that my RB450G died today - looks like faulty capacitors
This unit was purchased on March 2009.
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Let me know off-line if you have not received them yet. We worked like crazy through a bunch of RB450 cap repairs over the past few weeks and finally got caught up. They should have all been returned by now. I strongly recommend 12vdc on all RB450 and RB450G.Roc-noc is where I received my bad 20+ RB450s. I wonder if they received most of the bad shipment. Unfortunately Tom has 6 of my defective RB450s and wont return them either fixed or for me to solder myself. Hopefully Tom can advocate for us with Mikrotik since he's been left holding the bag.
Are the newer boards made with solid state caps?Put on solid state caps?yes, that's what we did
Got a picture of one of the newer boards?
Surely there are things you can do, if you want to to help the customer. Few things come to mind:Mikrotik sells the device to the distributors. We have informed them what do do if the devices are defective. We can't make them check the devices sooner, or make them sell the devices sooner.
The board should not be putting so much demand on the capacitors that only the very best top of the line caps survive.dont solder in just any old cap...
buy a good quality one.
I can recommend either some Rubycon Nichicon Chemi-Con.
you can buy from digikey, or badcaps.net or most electronics retailers.
We are using YAGEO, because they are easily available locally. I don't know if they are really so bad.dont solder in just any old cap...
buy a good quality one.
Yes! And that is why we switched from 24vdc to 12vdc power supplies for indoor RouterBoards.The board should not be putting so much demand on the capacitors that only the very best top of the line caps survive.dont solder in just any old cap...
buy a good quality one.
I can recommend either some Rubycon Nichicon Chemi-Con.
you can buy from digikey, or badcaps.net or most electronics retailers.
This kind of behavior seems to suggest a design flaw.
Conspiration theories rock http://en.wikipedia.org/wiki/Capacitor_plagueElectrolytic Capacitors in general are just crap
high temperatures will kill them fast as well..
many manufacturers of parts have problems with caps.... very common.
Conspiration theories rock http://en.wikipedia.org/wiki/Capacitor_plagueElectrolytic Capacitors in general are just crap
high temperatures will kill them fast as well..
many manufacturers of parts have problems with caps.... very common.
I think it is important to present accurate and complete information.the problem was not with capacitors in general, but with a specific bad batch. we have changed the supplier, and there is no more problem. they look very similar to the previous ones, I think only the color and manufacturer info is different
...we have changed the supplier...
new batches are already made with different parts and will not have this issue. as soon as we got first problems, we switched supplier immediately
The "new supplier" is the same supplier: Su'sconA very small number, we found the problem and changed supplier immediately
Well. I've seen it. About 160 rb450gs in field, 15 493ahs, and a handful of 433ahs. Maybe 50 rb411s. At least dozen 450gs have failed as well as a few 411ars and 3 433ahs. The 493ahs were under warranty still. The others are just out.I don't think you will. This is the first RB450G that we have seen with bulging caps. I am hoping this is an anomaly.I really hope I dont start seeing this problem. I have about 80 450Gs I rolled out in the last 6 months.
The 450G power circuit design is much different from the older RB450 power circuit where we have seen all the cap problems.
Tom
And what power supplies were you running on these? 24vdc or 12vdc?Well. I've seen it. About 160 rb450gs in field, 15 493ahs, and a handful of 433ahs. Maybe 50 rb411s. At least dozen 450gs have failed as well as a few 411ars and 3 433ahs. The 493ahs were under warranty still. The others are just out.I don't think you will. This is the first RB450G that we have seen with bulging caps. I am hoping this is an anomaly.I really hope I dont start seeing this problem. I have about 80 450Gs I rolled out in the last 6 months.
The 450G power circuit design is much different from the older RB450 power circuit where we have seen all the cap problems.
Tom
Hi.I'm sorry but it's not possible to tell an exact range.
Is autosupout.rif ok? Every reboot like that there is a new one of course.cause1 sounds like a kernel panic, send to support a supout.rif file, so we can see what caused it.
Well:you can also check power budget of board and combined power consumption of the board
Can you specify exactly on what RB you see 6,3V capacitors in 5V line?MikroTik use capacitor with low peak voltage.
Is crazy to use 6,3v in line of 5v.
I've benn replaced all the capacitors in my RB in high tower with 560uF 10v (doubled than 5v)
and all works ok from 12v to 48v of power supply.
My RB damaged is: RB800, RB450, RB433AH and many RB411AH supplyed at 24v or 48v.
I hope MikroTik engineers change the capacitors and increase flash disk in future RB's (see RB1100AHx2)
OrCAD (master designers)
you like these? http://www.mouser.com/ProductDetail/Nic ... 9k%252bUHZMy RB450G failed on Sunday. I purchased it in July of 2011. No longer under warranty.
The capacitors are bad. The Nichicon UPW series or the new Polymer capacitors are my two choices.
The board made a sizzling noise before it failed.
Mike
buecker133, can you email support with your serial number, and a photo of the bad caps? Just want to make sure these are the same old caps, not some newer ones.My RB450G failed on Sunday. I purchased it in July of 2011. No longer under warranty.
The capacitors are bad. The Nichicon UPW series or the new Polymer capacitors are my two choices.
The board made a sizzling noise before it failed.
Mike