Welcome, Guest. Please Login or Register
Decware Audio Forums
08/11/20 at 19:25:11 


       


Pages: 1
Send Topic Print
Fuse Board (Read 222 times)
piezoman
Seasoned Member
****


"If it ain't
broke, fix it!"

Posts: 222
Fuse Board
08/02/20 at 19:48:50
 
My Taboo has a fuse board mounted underneath, the purpose is to protect the amp from damage in case the rectifier suddenly fails. It contains 3 fuses.

Not all the Decware amps have this provision. Does anyone know the background as to why this extra protection was added in the circuitry? I would guess up front the fuse located on top at the IEC / power cord would be sufficient as it is for example the Torii MK 4.

Also.....when we upgrade fuses for audio quality in our Decware amps, we replace the one at the power cord. For the Taboo, does anyone know if the 3 fuses on the board underneath also need upgraded, or are these out of the path enough to ignore? If these couod stand upgrading, that could be an extra expensive proposition.
Back to top
 
 

Taboo MK IV-25th
ZRock2-25th
ZBIT
Omega Jr. 8XRS towers w/ALNICO driver
Bryston BDA-2/BDP-2
Seagate 8TB HD
Blue Circle Line Cond.
Audeze LCD-3F
Aluminum iso feet w/ceramic balls
IC's: DSR-II, Better Cables Silver XLR
Cables: ZStyx, DHC-1, Curious 200mm.
  IP Logged
CAJames
Verified Member
**


"I've run every
red light on memory
lane."

Posts: 45
Re: Fuse Board
Reply #1 - 08/02/20 at 22:24:47
 
I can't speak to the Taboo in particular, but in general it is hard to imagine a component further from the signal path than the mains power fuse. So if it is worth upgrading I would assume all the other ones are too.
Back to top
 
 
  IP Logged
will
Seasoned Member
****




Posts: 2198
Re: Fuse Board
Reply #2 - 08/03/20 at 00:02:44
 
I think the fuse board presence is probably more about newer versus older amps. I recall seeing a pic of a Torii IV with rectifier fuse boards. But my Toriis, being older, do not have them, the IEC fuse breaking when a rectifier shorts.

I would assume similarly to CAJames, since IEC fuses can be heard, it would seem the rectifier fuses could make a difference too. In my amp work, I got to a place where it was hard to differentiate signal path from power parts and paths in terms of the sonic effect. Changing about anything in there makes a sound difference to me, especially with the right parts changes. Associated, to me, changing power supply bypasses, brand, types, and values, can be heard similarly to changing coupling caps.

I don't know how those boards are organized though, what fuses are used, and how they might effect the sound individually and collectively..so can't comment on that without experience.

Hopefully Steve and others who have played with these fuses will comment.

But in the meantime, I might be inclined to just play with the IEC first anyway, and see if you like what you hear. Also if you are not careful and familiar with them, opening a tube amp can be dangerous, while possibly effecting your warranty....
Back to top
 
 

Power-PSA P5, Brickwall/Shunyata Defender+>RevolutionMacMini/Audirvana>Kitsune Singxer>Gustard x20pro DAC modified; Cables: Pi Audio PC, DIY: PCs, ICs, USB, Speaker; Decware- CSP3, Torii IV, HR1-all modified; DIY ZBIT; feet- Archie's, alum/ball bearing, and more
  IP Logged
piezoman
Seasoned Member
****


"If it ain't
broke, fix it!"

Posts: 222
Re: Fuse Board
Reply #3 - 08/03/20 at 00:30:08
 
thanks guys, for your input so far.

opening up the amp is no problem. all you need to do is discharge the power supply capacitors to deal with any appreciable voltage remains after shutdown.

i used this as a guide: https://www.youtube.com/watch?v=sw9KnSFy3Fs

this is also useful: https://www.wikihow.com/Discharge-a-Capacitor

Back to top
 
 

Taboo MK IV-25th
ZRock2-25th
ZBIT
Omega Jr. 8XRS towers w/ALNICO driver
Bryston BDA-2/BDP-2
Seagate 8TB HD
Blue Circle Line Cond.
Audeze LCD-3F
Aluminum iso feet w/ceramic balls
IC's: DSR-II, Better Cables Silver XLR
Cables: ZStyx, DHC-1, Curious 200mm.
  IP Logged
piezoman
Seasoned Member
****


"If it ain't
broke, fix it!"

Posts: 222
Re: Fuse Board
Reply #4 - 08/03/20 at 00:59:23
 
i wonder what that minty green goop is that appears to be coming out the seams of the two black caps  :o
Back to top
 
 

Taboo MK IV-25th
ZRock2-25th
ZBIT
Omega Jr. 8XRS towers w/ALNICO driver
Bryston BDA-2/BDP-2
Seagate 8TB HD
Blue Circle Line Cond.
Audeze LCD-3F
Aluminum iso feet w/ceramic balls
IC's: DSR-II, Better Cables Silver XLR
Cables: ZStyx, DHC-1, Curious 200mm.
  IP Logged
funch
Senior Member
***




Posts: 77
Re: Fuse Board
Reply #5 - 08/03/20 at 03:00:30
 
The pic links just lead to a sign in page for dropbox.

A leaking PS cap isn't a good sign.
Back to top
 
 
  IP Logged
piezoman
Seasoned Member
****


"If it ain't
broke, fix it!"

Posts: 222
Re: Fuse Board
Reply #6 - 08/03/20 at 16:13:58
 
Thanks funch, I'll post them up differently very soon.

As for the apparent "goop", I opened up the amp again and upon closer inspection, is just globs of glue to help hold the capacitors together. Upon some research, this is a common practice with mfrs. and some folks like me mistake the minty light green glue for a physical leak. A true leaking capacitor oozes brown/tan/whitish discharge that gets crusty.
Back to top
 
 

Taboo MK IV-25th
ZRock2-25th
ZBIT
Omega Jr. 8XRS towers w/ALNICO driver
Bryston BDA-2/BDP-2
Seagate 8TB HD
Blue Circle Line Cond.
Audeze LCD-3F
Aluminum iso feet w/ceramic balls
IC's: DSR-II, Better Cables Silver XLR
Cables: ZStyx, DHC-1, Curious 200mm.
  IP Logged
Pages: 1
Send Topic Print