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jmanalo  
#1 Posted : Saturday, January 29, 2011 6:24:57 PM(UTC)
jmanalo

Rank: Member

Groups: Member
Joined: 5/23/2009(UTC)
Posts: 12
Location: San Jose Ca

Brian/Russ,

I have a problem with my MUX, it initially work for a few tracks of music when I initially tested it. After a few days, when I turn it on again, the Mux LED wont lit up no more, there is an instanteneous flicker on the LED when I power OFF and ON the supply. I disconnected the connection from the BUF II because after leaving it connected for several minutes, it shut off the mute LED of the Buf.

The measured supply voltage at DAC and MUX are 5.4V.

I've tested the Buf after I disconnected it with MUX and it works fine, however, the MUX LED won't lit up anymore, except for an instant flicker during power ON/OFF.

These were my previous connections from BUF to MUX.

MUX BUF.
Gnd-- Gnd
LRCK DCK
Dout D1

Can you please tell me the test points of the MUX so that I can troubleshoot it.

Thanks,

Joe
jmanalo  
#2 Posted : Saturday, February 5, 2011 4:33:24 PM(UTC)
jmanalo

Rank: Member

Groups: Member
Joined: 5/23/2009(UTC)
Posts: 12
Location: San Jose Ca

jmanalo wrote:
Brian/Russ,

I have a problem with my MUX, it initially work for a few tracks of music when I initially tested it. After a few days, when I turn it on again, the Mux LED wont lit up no more, there is an instanteneous flicker on the LED when I power OFF and ON the supply. I disconnected the connection from the BUF II because after leaving it connected for several minutes, it shut off the mute LED of the Buf.

The measured supply voltage at DAC and MUX are 5.4V.

I've tested the Buf after I disconnected it with MUX and it works fine, however, the MUX LED won't lit up anymore, except for an instant flicker during power ON/OFF.

These were my previous connections from BUF to MUX.

MUX BUF.
Gnd-- Gnd
LRCK DCK
Dout D1

Can you please tell me the test points of the MUX so that I can troubleshoot it.

Thanks,

Joe





Hi Russ/Brian


Any info on how I will troubleshoot the MUX, some tips on which to check?
Thanks,

Joe
Russ White  
#3 Posted : Saturday, February 5, 2011 9:10:41 PM(UTC)
Russ White

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN

Thanks: 25 times
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