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- Right channel Crackling noise.
March 3, 2008, 9:15 am
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on signal peaks. Sounds just like what you hear when the speaker has
junk in it or is binding up.
But the same noise comes out the headphone jack.
It's loud enough to be annoying, but not so loud that you can see
anything obvious on an oscilloscope. It's not clipping.
Doesn't do it much when cold, but gets worse as it warms up.
I'm using powered speakers, so shouldn't be heating up the output stage.
Assuming I can construct a test signal so I can see the problem on
the scope, it's gonna be a nightmare to suspend it all disassembled
and working so I can probe it.
Anybody experienced this? fix? Audio section schematics? Do they use
an audio chip I'll be able to find docs on?
Return address is VALID!
Re: Right channel Crackling noise.
Don't bother: the sound chip or one of its supporting components is
fried, IMO. This is a mainboard replacement, and I don't know of any
notebook for which a mainboard replacement is less expensive than a new
notebook. Well, unless the jack has corruption on its surfaces. Do you
smoke? Cigarette smoke is a killer of jacks.
BTW, your Inspiron 3700 is more than six or seven years old? This age
is terminal for most notebooks, unless it was operated in a clean room
with a filtered AC supply.
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