Could be that when the part came off, a trace went with it

From: Af [mailto:af-bounces+paulm=pdmnet....@afmug.com] On Behalf Of Ken Hohhof 
via Af
Sent: Saturday, September 27, 2014 11:07 PM
To: af@afmug.com
Subject: Re: [AFMUG] missing part on Canopy SM

So the missing part doesn’t explain why it doesn’t work.  It came with a 
guarantee, so I’ll send it back to the seller.

From: Paul McCall via Af<mailto:af@afmug.com>
Sent: Saturday, September 27, 2014 9:47 PM
To: af@afmug.com<mailto:af@afmug.com>
Subject: Re: [AFMUG] missing part on Canopy SM

Gerard is correct.  An SM will function without it, though it makes the 
Ethernet less than protected from basic transient surges (even little ones).

I would suggest replacing it

From: Af [mailto:af-bounces+paulm=pdmnet....@afmug.com] On Behalf Of Gerard 
Dupont III via Af
Sent: Saturday, September 27, 2014 10:28 PM
To: af@afmug.com<mailto:af@afmug.com>
Subject: Re: [AFMUG] missing part on Canopy SM

It's a Transient Voltage Suppressor. I haven't tested others, but I know 100 
will function just fine without it. In a pinch I remove them to fix ethernet 
errors. I think this is the right part number if you wanted to replace it. 
RCLAMP0504FCT

Gerard


On Sat, Sep 27, 2014 at 10:19 PM, Ken Hohhof via Af 
<af@afmug.com<mailto:af@afmug.com>> wrote:
Anybody know what that little 6-leaded SMD is between the RJ45 jack and the 
Ethernet transformer on the PCB of a Canopy SM?  We bought a used SM that 
doesn't work (it lights up and seems to be trying) and that part is missing. I 
don't think it's optional.  But is its absence causing the problems?  Or just 
an indication that a tech didn't finish repairing it and mistakenly marked it 
as tested and good?

If it's a surge protection component, it seems too small to do much good.

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