I don't have pictures of what I had, One was in a stainless steel box the other was a clamshell aluminium enclosure.
Threw the boards away as they were no use to me and too complicated for what I wanted.
As you say nothing is current in their inverters, they are always changing.
One inverter had bolt on mosfet boards, they had 4 mosfets per board on my inverter. The DC side are the same except the AC boards had small ferrite beads on the central leg of each mosfet. Apparently that prevents them blowing up.
The other inverter had soldered in Mosfets on the main power board. Much harder to do a quick repair job.
The process I went through to repair them was suggested to me by Lighthunter via an old Oztules post.
FIrst to replace the mosfets, drivers and check resistors, then unsolder the capacitors and remove them.
Then I put a 5 watt resistor in series with the supply so that nothing would blow up while I was checking for gate drive.
After that replace the capacitors and put the whole shebang back together.
In the end I found that it had a bad connection on one of the battery posts internally, and that was causing it to blow up.
The less connectors on the high current side the better.
My new inverters are wired directly to the batteries with a 160 amp circuit breaker as protection.
Much larger cables than powerjack use.
With your inverters it may be worth just running them until they expire.
You could always get an 8010 board and have it sitting in the shed in case of major disasters with the PJ.
It doesn't take long to fit the transformer ( remembering the inductors, if possible add a turn to the inductor.
The 8010 boards come with a capacitor, make sure that you get the diagrams off the site that you buy them from.
Hope your system lasts a long time
Pete