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microfast  
#1 Posted : Saturday, November 21, 2009 2:11:31 PM(UTC)
microfast

Rank: Member

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Joined: 11/21/2009(UTC)
Posts: 5
Location: Italy

I have finally assembled the Buffalo32 with the Placid power supply, but unfortunately I have a problem:

The left channel is entirely mute, I have checked the voltages: digital +5V and the two analog +/- 15V ( correctly connected from the begin )and they are perfect exactly like the right channel that works ok.

I am a technician so I could investigate where the audio signal stop, but I have not the schematic for to do it.

Please can you help me?

Some ideas of what could be the problem?

Regards
Marco

Edited by user Saturday, November 21, 2009 2:14:03 PM(UTC)  | Reason: Not specified

microfast  
#2 Posted : Saturday, November 21, 2009 2:38:42 PM(UTC)
microfast

Rank: Member

Groups: Member
Joined: 11/21/2009(UTC)
Posts: 5
Location: Italy

I have disconnected the right channel that works ok and I have noted that the left channel is not mute at all but very very low and also very often a little disturbed with pop and crack noise.

What to do?

Regards
Marco
microfast  
#3 Posted : Saturday, November 21, 2009 5:06:50 PM(UTC)
microfast

Rank: Member

Groups: Member
Joined: 11/21/2009(UTC)
Posts: 5
Location: Italy

Resolved !!!!

Was a short between two pins on a LM4562 ( pond residual, a bad soldering ) ...

Now works great :)

Regards
Marco
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