[sdiy] OB8 power transformer

[g m montalbano]

Yes, the one thing I don't want to hear from a customer is "I read it on
the internet;  you should do ...."

HOWEVER, in this case, the customer was correct.  I finally got the OB8 on
my bench, and the burnt smell (reminiscent of burnt resistor or opamp) is
definitely coming from the transformer.  But, checking the transformer with
a meter & scope reveals that all voltages are present and correct, and the
transformer is running cool; all regulators are in good shape, and the 5V
rectifier has been previously replaced with a higher rating.
The synth is playing perfectly.
My question is:  what burned on the transformer to create that smell, and
why is it now working correctly?

On Tue, May 21, 2024 at 2:16 PM Gordonjcp <gordonjcp at gjcp.net> wrote:

> On Tue, May 21, 2024 at 03:26:36PM +0200, Roman Sowa via Synth-diy wrote:
> > It doesn't necesarily be customer's view, but maybe something another
> tech
> > told him before.
>
> Which is why we have the plague of HERP DERP MUST REPLACE CAZAPITARS any
> time people get a faulty (or even just old but not faulty - yet!) piece of
> equipment.
>
> --
> Gordonjcp
>
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