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

Notification

Icon
Error

Login
Help to troubleshoot Buffalo IIIse please...
Options
View
Go to last post Go to first unread
Previous Topic Next Topic
AlexanderT  
#1 Posted : Wednesday, July 2, 2014 7:58:56 PM(UTC)
AlexanderT

Rank: Member

Groups: Member
Joined: 2/4/2014(UTC)
Posts: 42
Ukraine

Thanks: 6 times
Was thanked: 3 time(s) in 3 post(s)
I was trying to connect WaveIO board to Buffalo IIIse via non-isolated I2S and something happened it seems - it no longer locks on anything (i2s or spdif). Since WaveIO board works with other dac it seems the problem is in Buffalo now.
It must have been somekind of discharge on I2S so I'm preparing for the worst.
Is there a way i can make sure if dac chip itself is still ok?

Update: I found similar problem in this topic http://www.diyaudio.com/...o-iii-i2s-problem-3.html
I measure 21ohm between DCK and ground, nothing between D1 and ground, 102ohm between D2 and ground, 76ohm between spdif and ground, around 124ohm between D2 and DCK...

Edited by user Friday, July 4, 2014 2:46:39 PM(UTC)  | Reason: update
Back to top

Wanna join the discussion?! Login to your Twisted Pear Audio Support forum accountor Register a new forum account.
Back to top  
AlexanderT  
#2 Posted : Thursday, July 3, 2014 1:25:15 PM(UTC)
AlexanderT

Rank: Member

Groups: Member
Joined: 2/4/2014(UTC)
Posts: 42
Ukraine

Thanks: 6 times
Was thanked: 3 time(s) in 3 post(s)
I rushed ahead and removed 2 of the chips (D2 and DCK) which short via ground and it seems they are the only problem so far. Now i need the replacement, but have been fruitless in finding mysterious "B7BA" or "B78A" chips.

Are they Fairchild multiplexers? They seem to have "B7" and "B7B" parts, but not "B7BA"...

Please help - need part number\model! It's the only thing (hopefully) that keeps my dac from playing :(

Edited by user Saturday, July 5, 2014 10:48:41 AM(UTC)  | Reason: update
Back to top
Brian Donegan  
#3 Posted : Saturday, July 5, 2014 2:30:17 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)
NC7SB3257P6X
Back to top
WWW
thanks 1 user thanked Brian Donegan for this useful post.
AlexanderT on 7/5/2014(UTC)
AlexanderT  
#4 Posted : Friday, July 18, 2014 10:12:38 PM(UTC)
AlexanderT

Rank: Member

Groups: Member
Joined: 2/4/2014(UTC)
Posts: 42
Ukraine

Thanks: 6 times
Was thanked: 3 time(s) in 3 post(s)
Originally Posted by: Brian Donegan Go to Quoted Post
NC7SB3257P6X


Thanks for fast help, I ordered 10 just in case, replaced two dead ones and now my Buffalo is back in business Applause I'll be more carefull around unisolated I2S from now on.
Back to top
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (2)
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