Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login
Buffalo DAC 3 SE is not working - added the signal waveform.
Options
View
Go to last post Go to first unread
Previous Topic Next Topic
syskwl  
#1 Posted : Monday, April 15, 2013 8:31:16 AM(UTC)
syskwl

Rank: Member

Groups: Member
Joined: 4/15/2013(UTC)
Posts: 5
Korea, Republic Of
Location: Seoul
I purchased Buffalo III SE and Ragato I/V and connected Combo384.
It is not working and it displayed A_MUTE LED as the attached photo.
I attached the photos that D2 input signal waveform because it is too
small compared to another input signal.

[img]http://blog.naver.com/syskwl/90171271615[/img]
;
I setup my friend's Buffalo III SE on the Ragato and confirm it worked well.



I guess IC5 is broken that is connected to D2 input signal, right?
What is IC5?
Can I change the IC?

Edited by user Monday, April 15, 2013 8:47:28 AM(UTC)  | Reason: didn't post photos
Back to top
WWW

Wanna join the discussion?! Login to your Twisted Pear Audio Support forum accountor Register a new forum account.
Back to top  
Brian Donegan  
#2 Posted : Monday, April 15, 2013 9:57:59 AM(UTC)
Brian Donegan

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)
Can you disconnect the wire from D2 and measure its output level while not connected to the Buffalo?
Back to top
WWW
syskwl  
#3 Posted : Tuesday, April 16, 2013 3:23:27 AM(UTC)
syskwl

Rank: Member

Groups: Member
Joined: 4/15/2013(UTC)
Posts: 5
Korea, Republic Of
Location: Seoul
Please see my blog photos. I don't know how to upload my photos to this site.
Combo384 D2 signal is normal and I checked it was connected with Buffalo DAC correctly.
As I told, I confirmed another Buffalo DAC is OK in my system.
Back to top
WWW
Brian Donegan  
#4 Posted : Tuesday, April 16, 2013 2:29:07 PM(UTC)
Brian Donegan

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)
Can you measure resistance to GND for each I2S input pin? This will need to be done without the USB module attached.
Back to top
WWW
syskwl  
#5 Posted : Wednesday, April 17, 2013 6:08:03 AM(UTC)
syskwl

Rank: Member

Groups: Member
Joined: 4/15/2013(UTC)
Posts: 5
Korea, Republic Of
Location: Seoul
You're right. I measured the resistance to GND for the D2 signal connector. It is 20ohm and another normal signal is infinity.
What is IC5? I can't see the name of the IC5 because of too small. I confirmed there is short between 1 leg and 2 leg of IC5.
Where is the schematic diagram of Buffalo III SE? I can't find it here.
Back to top
WWW
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (6)
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.

Youtube
Copyright © Twisted Pear Audio