Inverter has died ' Options '

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we have a 9 year old 16 panel 4kwh system paying 21p FIT , one large inverter in the attic. facing SSE but shaded, it has stopped working, we have an extended warranty of sorts ( bad workmanship ) , but the insurers still arranged for an inspection. it has died. the options. 1. replace like for like, 2. micro inverters on each panel , or can we cover a bank of panels ( say in 4's ) on small inverters. is the info about inverters working at the lowest performing panel still correct or have they got smarter in the generation. cost is a factor and anything over the get it working price really need to pay for the extra expense.
thanks in advance

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- 40% of panels in an East/ West rooftop orientation.
- Viessmann 200-W on Advanced Weather Comp. (the most efficient gas boiler sold)
Might be repairable.
I have a couple of single string sma 3300s which are surplus to requirements
4kw sse since 2014 and 6.6kw wsw / ene split since 2019
24kwh leaf, 75Kwh Tesla and Lux 3600 with 20Kwh useable storage
If I was buying again, I would go for Tigo optimisers and a hybrid inverter, as it is less restrictive and cheaper.
With solaredge you either need to go with an AC couple battery or their own (expensive) DC coupled battery. You can put Tigo optimisers on only the panels that have shading issues and you can use any brand of inverter.
Like I say, I am happy enough with the Solaredge, I just don't like being tied to one supplier. A bit like Apple Vs Android.
aurora inverter
looked online and some suggest dry solder joints which is next step.
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Whilst this makes them a more expensive option, they can be a better choice if shading is a problem on site.
This is because a string inverter system can only perform as well as its lowest-performing panel.
So if shade impacts one panel’s performance, every other panel operates at the same reduced capacity.
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All very cheap to fix, amd they arent bad to disassemble, I bought relays for I think £5 each and have fixed 2 of these inverters which I now use in my garage.
So if you are not confident fixing, gimme a shout.
4kw sse since 2014 and 6.6kw wsw / ene split since 2019
24kwh leaf, 75Kwh Tesla and Lux 3600 with 20Kwh useable storage
CCC Play Off Winners 2010
put back together this morning and switched on. started ok and went through sequence but returns an error now of E013, Ive had a read and it seems the strings ( rows of panels ? ) will be set in parallel ! the manual talks of jumpers but the inputs are exactly as removed following the usual videos of numbering 7,8,9 & 0 .. as the unit has been completely disconnected will it mean entering all the settings again ? . I suppose there could still be a relay fault but need it to go past first stage before panel will indicate.
CCC Play Off Winners 2010