On Sat, 2 Oct 2010 06:40:06 -0500, "Mark Zacharias"
wrote:

"james moffat" wrote in message
.. .

HI all!
I have a nikko alpha 230 amp that is distorting one channel just
enough to annoy my ears
and was wondering if anyone has any advise on what to check for / and
or replace to get rid of the noise.
If it makes any difference to the diagnosis the music is fine at the
headphones, and is only distorted on the left channel.
I have enough knowledge to make me dangerous, and some test
equipmentno o-scope
so if someone is willing to help me learn a little more please blast
away.
thanks for your time
remove the spam to e-mail me.
james
If you really want to talk to me - just eat the spam


Could be a bias problem, but if you aren't good with amps it would be pretty
easy to blow up the thing and cause a much more expensive repair.
That said, could be a bad bias transistor, flaky bias pot, open resistor,
etc.
Unless there were a common problem on this model which someone here just
happens to know about (and Nikko's aren't the most common amps by a long
shot) then real troubleshooting by a qualified technician is your best bet.

Mark Z.

Mark Z.

the amp was free... so I am treating it as a learning experience
rather than "I must get it working" . If I am unable to repair it then
it will simply be tossed.
thanks for the advise , I will look into that.
me
If you really want to talk to me - just eat the spam