Due wrong connection 28v passive PoE to port5 via original MikroTik RBGPOE Gigabit PoE Injector hAP ax3 burned and now all ports are not works, all leds lights in a half, at front panel 2-3 ports flashing activity without real cable connection.
Board is alive, it can be accessible via wifi. Port tests shows no link at 1,4,5 ports, link-ok at 2-3 ports without real connection.
Power can be delivered via passive PoE to port1 or power-connector.
I think lan-transformer is dead, but why 2-3-4 ports are not works too? I have rb2011 board as a parts donor and can solder some smd parts.
Can anybody make an advice, what can be dead in my board? May be there is a circuit diagram here or anythere? Dealers asks for repair more than new router costs
You should also be able to plug-in a USB ethernet adapter, for example one that uses the Realtek RTL8153 controller family, and use the hAP ax³ as a wired access point/wireless router.
To be safe, because the r8152.ko driver shipped with RouterOS ARM64 is from the 5.6.3 kernel, try to find adapters with the RTL8153B revision and older. Because supports for the RTL8153C / RTL8153D / RTL8153E revisions only come with newer kernel versions and MikroTik might not have backported the changes. See RouterOS USB Ethernet support - RouterOS / General - MikroTik community forum.
Had they used the source code provided by Realtek, then support for the 2.5G RTL8156 would be possible too, without having to upgrade the kernel. But they refused to do that (I've tried to post a support ticket but it has been closed). Currently it appears that the new driver is only used for the x86 version of RouterOS (change item in 7.16) and does not apply to what shipped with the ARM64 version.
I mean: what did you do wrong to get the “port burned”? Did you mis-wire something (e.g. swapped lead in patch panel, short circuit), did you apply power to ether5 instead of ether1, etc.
Something must have been wrong, they usually do not go defective by themselves and if they do, you can use your warranty.
Checked once more, 5th port transformer is dead, one of lines has significally higher resistanse than anothers and other ports (pins are the same with PoE ) Side from processor has normal resistance.
OK. it’s dead, but why 1st port with separate transformer not works?
P.p.s. removed 5th port transformer, nothing changed
