Mikrotik RB433 Ethernet port stops responding

I have a RB433 configured as a station bridge - connecting via nv2 to another 433 ap bridge. Wireless works fine. At random intervals, the Ether1 port (the only one in use) stops responding. Wireless is still ok.
All ports (including wlan) on the board are linked together in a bridge, and the bridge has an IP address. RouterOS is 6.32.2. Had previously 6.27, and upgrading didn't change anything.
Got a tip about turning off STP, but problem is still there.

Changing the board may be a solution, but it is located in a quite remote location.... Trying all other options first.

In Winbox I see that a switch is configured - with Ether2 and Ether3 as the ports, but no master port. Could this create a problem (same ports in both switch and bridge)? If so - what should be done to fix it (there is no choice to add or remove ports from the switch...)
Olaf BerliOwnerAsked:
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Norm DickinsonGuruCommented:
I have seen firmware updates resolve issues such as this. Check with the manufacturer to see if one is available. Also note that flashing the firmware will overwrite any settings contained on the device in most cases - so get a complete backup of the configuration first, and prepare for downtime during the flash and reconfiguration process.
Olaf BerliOwnerAuthor Commented:
Hi Norm. Thanks for your response.
I upgraded the OS and the firmware as my first step. Didn't solved the problem.
My solution was to use another Ethernet port and just have power supplied through Ether1. This has worked well for some time now, so it seems like the problem is solved.

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Olaf BerliOwnerAuthor Commented:
Trying to fix the problem via Winbox (settings, upgrades etc.) the only remaining solution was to start using a different Ethernet port on the RB433 board. This fixed the issue. Did this before any response to my question....
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