David,
I never had a problem with the mains transformer - but it's clear that
the transformer is a bit underpowered. I dont understand why they
didnt use a normal switching power supply. Probably because of
interference.
Problem is that we lack a service manual for the S1100. I'm not so
sure if the transformer is the same as the one for the S1000. I think
the power supply is a bit different because of the extra outputs
etc... One possibility is to find a replacement transformer. The
output voltages can be measured but we need to know how much ampere
for every output.
In case we can have a service manual, we can probably find a
replacement transformer - if not - all these transformers can be made
by hand. There are companies which can do that for you - but may be
pricy. If the transformer has a different size, you will need to
create a new shield.
An easier way is a. finding another sampler (in germany they go for 80
Euros) or to try a pc power supply (mount it outside the S1100). I'm
not sure whether the S1100 only uses +/- 5V 12V. In case it does, a pc
power supply is an option. You can easily find for nothing them in
recycling centres. Maybe taurecords can help. He's currently
inspecting the S1100 architecture.
Regards,
Frank
--- In akaiS1000S1100Samplers@yahoogroups.com, David Castle
<dgc21music@y...> wrote:
Show quoted textHide quoted text
> HELLO EVERYONE.
> MY S1100'S POWER TRANSFORMER STARTS TO MAKE A HIGH
> PITCHED NOISE AFTER IT'S ON FOR ABOUT 50 MINUTES.IVE
> GOT A TECHNICIAN IN N.Y.C. WHO SAYS THESE AKAI'S WERE
> ALL BUILT IN A WAY THAT THEY RUN WAY TO HOT.ANYWAY,
> HAS ANYONE OUT THERE HAD THIS PROBLEM WITH THE POWER
> TRANSFORMER?THE WINDINGS START TO OVERLAP.CAN A S1000
> TRANSFORMER BE USED? PLEASE LET ME KNOW.
>
> THANKS FOR READING.
>
> DAVID CASTLE
>
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