MikroTik RBSXTG-5HPnD Series

Ethernet port does not work
No link on Ethernet port
1. Troubleshooting flow chart
12 Ethernet port does not work
Measure inductors L400,
FB400, FB401 resistance
Change faulty
inductor
Change ESD protection
diodes D401, D402
Change TRF401
Change 25MHz crystal Y400
Change Ethernet Phy U400
Change CPU U100
<1
Ohm
>1
Ohm
Problem still
appears
Problem still
appears
Problem still
appears
Problem still
appears
On U100 CPU silcscreen must be the same product code,
or You will lose the license. License may also lose if changes U901