I thought the FSB came out because lot of people complain on the failures, so at least in my mind it was related. If it is not then cambium has not identified at least to us what is the root cause of the problem and it has been addressed.
They are doing RMA but there is know way 20% failure rate is sustainable in the field. I hope cambium addresses this quickly and let us know what is going on. I hope they allocate significant resources to this problem. Tushar > On Sep 9, 2015, at 11:08 PM, George Skorup <[email protected]> wrote: > > I think the FSB is very specific to a set of radios that were identified as > improperly assembled. I had one 5GHz 450 SM show the ADI communication > failure. And a 3.6GHz SM show RF calibration failure. Both rebooted with ADI > force resets. Both not on the list. Cambium RMA'd them without too many > questions. > > FYI. Maybe it's related, maybe not. I found some new SMs that had a few > solder balls rattling around in the cases, but they work fine. > >> On 9/9/2015 9:21 PM, Ken Hohhof wrote: >> I have seen 2 out of around 100 suddenly exhibit the ADI Communications >> Failure after about a month in service, neither was on the serial number >> list. So a 2 day burn-in may help but you won’t be bullet-proof. We’ve >> only seen it on 5 GHz SMs, but we use a lot more 5 GHz than 3.65 GHz, and no >> 2.4 GHz. No apparent correlation with any environmental conditions like hot >> or stormy weather that could have precipitated it. >> >> Worst case will be it fails intermittently and the new customer just thinks >> your service is really unreliable. One of the 2 failures we saw was >> intermittent, rebooting for several hours, then registered for several >> hours, then rebooting again, no rhyme or reason. At least if it fails hard, >> they will call. >> >> >> From: Tushar Patel >> Sent: Wednesday, September 09, 2015 8:48 PM >> To: [email protected] >> Subject: Re: [AFMUG] Field Service Bulletin - PMP 450 SM >> >> We had 9 failures in 50 we ordered, those were not listed in the unit serial >> numbers. >> >> What we are doing now is running radios in the office for at >> least two days before we send out and we are seeing these failures in the >> office. >> >> Even after doing that today we had one fail which was 1 hr drive from the >> office and it was new customer too, installed last week. This gives us bad >> reputation and cost us lot too. >> >> So whatever the root cause mentioned in the email, if it was >> identified but did not include the batch we got, so something is not adding >> up still. >> >> I really hope cambium gets to the bottom of these quickly. >> >> >> Tushar >> >> >> On Sep 9, 2015, at 8:22 PM, Steve D <[email protected]> wrote: >> >>> Just a bump... was this ever sorted out? Contained to just one batch of >>> 5.8 radios as listed? I know I've seen reports in other >>> frequencies but seemed less widespread? No mention from anyone in a >>> while... Just want to know before our next order... >>> >>> -Steve D >>> >>>> On Fri, Aug 21, 2015 at 6:37 PM, Matt Mangriotis >>>> <[email protected]> wrote: >>>> I wanted to get this out to everyone before the weekend. We found the >>>> root cause and identified the affected units by serial number. >>>> >>>> >>>> >>>> See the attached Field Service Bulletin, and you can post any further >>>> comment or issue in the thread that discusses it here: >>>> http://community.cambiumnetworks.com/t5/PMP-450/Field-Service-Bulletin-ADI-Catalina-R1-Chip-not-supported/m-p/43211#M1106 >>>> >>>> >>>> >>>> Apologies for the pain this issue has caused. >>>> >>>> >>>> >>>> Matt Mangriotis >>>> >>>> Senior Product Manager >>>> Cambium Networks >>>> 3800 Golf Road, Suite 360 >>>> >>>> Rolling Meadows, IL 60008 >>>> >>>> >>>> >>>> www.cambiumnetworks.com >>>> O: 847-439-6379 >>>> >>>> M: 630-308-9394 >>>> E: [email protected] >>>> >>>> <image001.jpg> >>>> >>>> >>>> >>>> Join the Conversation >>>> >>>> Cambium Networks Community Forum >>>> >
