Affichage des articles dont le libellé est NAP110 Let the smoke out!. Afficher tous les articles
Affichage des articles dont le libellé est NAP110 Let the smoke out!. Afficher tous les articles

NAP110 Let the smoke out!

mercredi 30 mars 2016

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). I opened it up and this is what I found:

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There are fried resistors on both circuit boards, and two transistors that are visibly cracked and melted in Ch2 . I guess there must have been a voltage surge. The line fuse didn't blow, and the pilot light was still lit (I leave the amp on all the time, a practice which has now bit me in the ass).

I haven't tested anything yet, but I assume that the output transistors and drivers will all be toast. I wonder what, if anything, has survived...

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NAP110 Let the smoke out!