Question about Music
The amp on my Yamaha KS 531 powered speaker (3-way 100watt RMS) is getting interference or turning off completely under load. I suspect the DH2TU relay or maybe the power supply. Where can I get a circuit diagram? Any other suggestions
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Posted on Jan 02, 2017
SOURCE: Peavey 400SC
You can find Peavey's manuals in their archives at
They are grouped alphabeticaly across the top.
Go Fer' It,
Posted on Dec 15, 2008
I would also be inclined to check all the larger electrolytic capacitors in the power circuits as well for AC bleed.
Posted on Feb 24, 2009
Your are on the right track. This fuse may look good but still be bad. once you in there all ways replace with new, it helps extend the life. 95% sure it s the fuse. If not it will need to go on the bench. Good luck DFD
Posted on Apr 11, 2009
It's definitely the laptop power supply. Switching currents are being forced into the ground connection.
What you need is an isolation transformer between the mixer and the computer.
Never, ever lift the ground pin. It's called a safety ground for a reason.
Posted on Aug 02, 2009
Yes. You can get them from Mouser electronics at $3.42 in singles.
Posted on Nov 11, 2009
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