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Class D Switching Power Amplifiers and Power D/A conversion

Truepath Malfunction
Truepath Malfunction
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Old 26th May 2015, 04:17 PM   #1
marvin55 is offline marvin55  Australia
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Default Truepath Malfunction

Gents, I have a challenging issue with my Truepath, an amp I have been very happy with.

It turns on and runs fine for about 30 seconds, mutes, recovers ad infinitum.

I moved house before this happened and the disturbance broke a dry solder joint in the linear PSU, so one of the rails floated up to ~60v, from the nominal 43v. I fixed that but now when the amp starts the rail floats up to ~60v and the mute unmute cycle continues just as before.

Hopefully someone with a more profound understanding of the Truepath will point me in the right direction.

Cheers
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Old 26th May 2015, 04:29 PM   #2
Bone is offline Bone  United Kingdom
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If the rail still floats up to 60v then you havent fixed the problem.
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Old 26th May 2015, 04:54 PM   #3
marvin55 is offline marvin55  Australia
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I may have been unclear. I fixed the dry solder joint; without the Truepath attached the power supply voltages are steady, but when I reattach the amp the muting behavior returns and the rail floats up to ~60v.
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