HiFi Subjectivist ¦ Audio Forum ¦ NVA User Group

Hello,

Rather an unfortunate situation, one of the boards in my monoblock A80 MKII amps has fried (possible teenage son related cause).
Is there a way of purchasing a pair of pre-populated boards (I'd rather replace both at the same time)?

Am I right in thinking the boards are the same across the range? I'd consider buying a second hand A20/A10h and harvesting the boards but in an ideal world new boards would make sense.

Thanks for any guidance you can supply,

Best regards

Mark

Best return to Nva for diagnosis

In the good old days I bought quite a few Nva amps that were on eBay spares/repairs and have restored a few for diy purposes, changing to power supply etc- not an easy task- getting into the amp is usually the hardest part.
But I’ve always kept a working original which is currently an A30

Appreciate the replies.

Funnily enough I did spot that ebay add, I'll keep an eye on it. My only fear would be mixing and matching differently aged boards. I understand the design won't have changed but there is something more reassuring about two brand new boards.
I'm already inside the amp, I can see the board need changing. Not a pretty sight.

Pics

Here’s the damage.

Hmmm
Never seen a board with damage that ‘far up’ - what did u do- be honest you are among friends

Whilst setting up his games console my son unplugged the amp and speakers. When he plugged everything back in the amp started smoking. I quickly turned everything off and unplugged it so I didn’t get a chance to analyse what he’d done but I’m guessing some sort of speaker cable short circuiting by plugging L out in R in… or something like that.

Yep that’s bad luck
Best get it back to Nva for assessment if u are in the uk

If not diy is possible- TIP147/142, thermal paste, selection of resistors a multi meter and soldering iron-