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smd zener diode help

stu.mccly

Feb 2, 2017
3
Joined
Feb 2, 2017
Messages
3
i have a faulty rs422 comms unit and have identified a short across one of the zener diodes on the TXA, unfortunatly its colour coded and i can't decifer its part number
can anyone help?
 

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sundy

Aug 5, 2016
64
Joined
Aug 5, 2016
Messages
64
I think you will need to provide more information and certainly a better picture for anyone to help you.
 

stu.mccly

Feb 2, 2017
3
Joined
Feb 2, 2017
Messages
3
the colours are Orange [largest band] Yellow Green
the diodes are linked directly to the TXA TXB RXA RXB lines
i assume they're used as a buffer for spikes, unfortunately i cant power it up and my camera is not great
 
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