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Eeyore Eeyore is offline
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Default Power Amp Repair



Jamie wrote:

Haaky wrote:
Eeyore wrote:
Haaky wrote:

I'm wondering if it's something in the power supply?

Pretty unlikely.


It's seems like it's getting a surge of power when i turn it on. Not all the
time just on occasion.

You mean it sometimes goes HUMMmmmmm...... at switch one ?

That's quite normal especially with toroidal transformers.


So far it's done it twice since i got it back. As soon as i hit the
power switch the fuse in the back popped. When i replaced the fuse and
switched it back on
it worked fine. Seems to be an intermitten thing, i hope. I don't mind
that so much if it only happens on occassion, i'm just affraid that
eventually something else will go wrong with it. And i know it will
happen when the warrenty they gave runs out.

sounds like a bad bridge or caps.


No it sounds like magnetising current actually. Toroids are notorious for it
because of the low reluctance of the magnetic circuit.

Graham