Rank: Member
Groups: Member
Joined: 5/4/2021(UTC) Posts: 2  Thanks: 3 times
|
Hi
I recently purchased a Buffalo-IIIse Pro 28 as a replacement for my good old Buffalo-II. I kept the IVY-III i/v stage and the 5V power supply. So the setup was pretty straightforward and after connecting the new DAC to the SPDIF source, the LOCK LED lights up but there's no sound and the DAC remains dead silent.
I measure 1.3V, 3.3V and 3.3V across the Trident regulators but -0.48V (yes, negative!) on both AVCC-SR sides. I guess that's at least a bad sign. Any idea? I'm a bit lost as there was nothing that could go wrong...
|
|
|
|
|
|
Rank: Member
Groups: Member
Joined: 8/5/2012(UTC) Posts: 208  Thanks: 4 times
Was thanked: 16 time(s) in 14 post(s)
|
Most common causes of no sound assuming everything is connected correctly: 1. No volumite/volume jumper attached 2. Incorrect dip switch settings - in particular note that 24 bit word length (which is prob. what you need) is not the default (as it is in the B-II) see https://github.com/twist...SE-Pro-On-Board-Firmware for settings
|
 1 user thanked Possum for this useful post.
|
|
|
|
Rank: Member
Groups: Member
Joined: 8/5/2012(UTC) Posts: 208 Thanks: 4 times
Was thanked: 16 time(s) in 14 post(s)
|
PS You should be measuring 3.6V on the AVCC-SR outputs. Remove and retest with 5V in applied. Check correct seating and orientation.
|
1 user thanked Possum for this useful post.
|
|
|
|
Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA
Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
|
What Possum said... test the AVCC module while not connected to the DAC.
|
1 user thanked Brian Donegan for this useful post.
|
|
|
|
Rank: Member
Groups: Member
Joined: 5/4/2021(UTC) Posts: 2 Thanks: 3 times
|
Originally Posted by: Brian Donegan  What Possum said... test the AVCC module while not connected to the DAC. Thank you Possum and Brian. I have to confess that I was stupid enough to mount the AVCC-SR in reverse orientation. Fortunately the DAC board and the regulator survived...
|
|
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
