Energy sub-woofer repair

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Long story, but I ended up with a faulty Energy ESW-V10 sub-woofer. When I got it the fuse had gone quite violently. Replaced the fuse and on turn- on heard a clap. Had a look inside and it has a Class D amplifier module. To the best of my knowledge Energy no longer has a local distributor.

The way I see it my options are as follows:
1. Fault find to component level - difficult without a schematic and I have no experience working on Class D amplifiers.
2. Contact Energy for a replacement module - the sub is about 13 years old so they may no longer carry spares and could be expensive.
3. Find a plate amp module that will fit the cutout and replace the existing electronics.
4. Put it out with the garbage - would be a pity as it appears to be nicely made with a serious 10" driver.

What would you do?

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