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
Amp board replacement
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Re: Amp board replacement
Best return to Nva for diagnosis
Analogue Source -
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
- Latteman
- Posts: 1226
- Joined: Tue Aug 14, 2018 7:20 pm
- Location: S. Yorkshire
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- Contact:
Re: Amp board replacement
Analogue Source -
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
- Latteman
- Posts: 1226
- Joined: Tue Aug 14, 2018 7:20 pm
- Location: S. Yorkshire
- Has thanked: 562 times
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- Contact:
Re: Amp board replacement
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
But I’ve always kept a working original which is currently an A30
Analogue Source -
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
-
- Posts: 21
- Joined: Tue Sep 05, 2017 6:00 pm
- Has thanked: 1 time
- Been thanked: 2 times
Re: Amp board replacement
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.
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.
- Latteman
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- Joined: Tue Aug 14, 2018 7:20 pm
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Re: Amp board replacement
Pics
Analogue Source -
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
-
- Posts: 21
- Joined: Tue Sep 05, 2017 6:00 pm
- Has thanked: 1 time
- Been thanked: 2 times
Re: Amp board replacement
Here’s the damage.
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- IMG_6418-compressed.jpeg (131.37 KiB) Viewed 1886 times
- These users thanked the author Rettib2001 for the post:
- Latteman (Sat Mar 09, 2024 8:41 am)
- Latteman
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Re: Amp board replacement
Hmmm
Never seen a board with damage that ‘far up’ - what did u do- be honest you are among friends
Never seen a board with damage that ‘far up’ - what did u do- be honest you are among friends
- These users thanked the author Latteman for the post:
- Rettib2001 (Sat Mar 09, 2024 8:48 am)
Analogue Source -
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
-
- Posts: 21
- Joined: Tue Sep 05, 2017 6:00 pm
- Has thanked: 1 time
- Been thanked: 2 times
Re: Amp board replacement
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.
- Latteman
- Posts: 1226
- Joined: Tue Aug 14, 2018 7:20 pm
- Location: S. Yorkshire
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- Contact:
Re: Amp board replacement
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-
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-
Analogue Source -
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources
GL-59 modified.
ARB uni pivot alloy wand-AT-VM95SH- RigB 9
ARB uni pivot wooden wand-AT- Signet.
Quad 34 Pre amp with mm phono stage.
Ifi Zen Phono for mc
Akai 4000DS mk2 R2R
Digital Sources- Argon Pi4 v2; IfI iUSB 3.0, Ifi Neo idsd Dac;
Fibre Ethernet connection.
Tidal / Radio Paradise
Amplification Nva 300va mono blocks
Speakers Lii Audio F-15 with Doc modded 12” in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources