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Putting the Smoke Back In

Yank

Yank

Bulbous Also Tapered
pinkfishmedia.net

NAP110 Let the smoke out!

There was a lightening strike on my block today while I was at work. When I got home, I opened the door and immediately smelled ozone. Something electronic was fried. After sniffing around, I found the source - the NAP110 amp that I use for my TV sound (with an NAC42.5 and a pair of LS3/5As)...
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pinkfishmedia.net

The Stirling Broadcast "Repair Kit" LS3/5A

I have a pair of Stirling Broadcast "Repair Kit" LS3/5As that were damaged by a lightning strike some years ago. The woofers were exposed to DC and the coils are melted. They've just been sitting in a corner gathering dust all this time. These were designed by Derek Hughes. I was thinking of...
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Having repaired the lightning-damaged Stirling "LS3/5A"s, now it's time to address the Naim NAP110.

Back in 2016 I received very kind donations from @hacker and @John_73, today I have finally gotten* around to installing them:

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Since the image links in the old thread are broken, here are some before shots for reference:

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BTW, the white blob on the blue wire which I had assumed to be heat shrink from a previous repair, was actually a melted insulator for the 2.8mm spade, and it took some patience to remove it.


*I know "gotten" rankles many UK English speakers, but I understand it's coming back.
 
The new boards are installed, the connector is replaced, now I just need to find where I've hidden my NAIM cables so I can test it. If it works, this amp along with a NAP42 and a pair of Stirling speakers will be pressed back into service to provide sound for TV.
 
toprepairman said:
Were they powered up when the lightning struck?
Click to expand...
I don't think they need to be, the electromagnetic pulse of a nearby strike may be enough to induce massive spikes via the antennas that are the speaker leads. I've fixed enough of these to hear anecdotally that this happened.
 
MJS, that may well be, but being powered up really doesn't help and the trail of destruction far worse.
So always turn kit off when not in use.
 
Sorry, I didn't make the point clear. Turning it off may not be enough, I always disconnect the speaker leads too.
 
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