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David Dunnett February 10th 06 04:10 AM

Low output signal on analog synth
 
Anyone here have any idea how to diagnose and fix an analog keyboard with a
low signal output that's only coming through in one channel? Is there an
internal amplifier? Is it just the jack?

thanks!



Ray L. Volts February 10th 06 07:15 AM

Low output signal on analog synth
 

"David Dunnett" wrote in message
. ..
Anyone here have any idea how to diagnose and fix an analog keyboard with
a low signal output that's only coming through in one channel? Is there an
internal amplifier? Is it just the jack?

thanks!



Does it have a headphone jack, and if so, same symptom with phones?



David Dunnett February 10th 06 07:10 PM

Low output signal on analog synth
 
no headphone jack. but i did listen through headphones and had the same
problem.


"Ray L. Volts" wrote in message
news:l4XGf.150384$7l4.124100@trnddc05...

"David Dunnett" wrote in message
. ..
Anyone here have any idea how to diagnose and fix an analog keyboard with
a low signal output that's only coming through in one channel? Is there
an internal amplifier? Is it just the jack?

thanks!



Does it have a headphone jack, and if so, same symptom with phones?





Ray L. Volts February 11th 06 07:08 AM

Low output signal on analog synth
 

"David Dunnett" wrote in message
.. .
no headphone jack. but i did listen through headphones and had the same
problem.


How did you listen via headphones w/o a jack? Didja hook 'em up to the line
level outs?
Might help to know the model unit we're talking about. Most analog
keyboards I'm familiar with don't have built-in speaker drivers, but yours
could.



David Dunnett February 11th 06 08:42 AM

Low output signal on analog synth
 
It's a Roland SH-2000 monosynth. My headphones have a quarter inch adapter
so I just listened through line out (that's all there is).

I don't have an amp on hand right now, but the last time I hooked it up I
needed to turn the volume WAY up to hear anything.



"Ray L. Volts" wrote in message
news:R3gHf.784$CZ4.84@trnddc05...

"David Dunnett" wrote in message
.. .
no headphone jack. but i did listen through headphones and had the same
problem.


How did you listen via headphones w/o a jack? Didja hook 'em up to the
line level outs?
Might help to know the model unit we're talking about. Most analog
keyboards I'm familiar with don't have built-in speaker drivers, but yours
could.





Ray L. Volts February 13th 06 10:52 PM

Low output signal on analog synth
 

"David Dunnett" wrote in message
.. .
It's a Roland SH-2000 monosynth. My headphones have a quarter inch adapter
so I just listened through line out (that's all there is).

I don't have an amp on hand right now, but the last time I hooked it up I
needed to turn the volume WAY up to hear anything.


As this is a 70's synth, you may have some resistors that have increased way
out of tolerance. Would be a good idea to check the electrolytic caps as
well on a unit this old.




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