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Rohde et Schwarz sythetizer SMF 100A

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Jean-Pierre Coulon

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May 9, 2018, 3:15:17 PM5/9/18
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When I connect the power chord and switch on from the back there is a
yellow led near the front panel power button.

If I press this button a green led shows up but disappears after about 3
seconds and the yellow one comes back. Nothing shows up on the screen.

Is it a stupid trouble I can fix myself? (internal fuse or similar)

Regards,

Jean-Pierre Coulon

peterw...@gmail.com

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May 9, 2018, 3:55:35 PM5/9/18
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Manual here:

https://cdn.rohde-schwarz.com/pws/dl_downloads/dl_common_library/dl_manuals/gb_1/s/smf/SMF100A_OperatingManual_en_12.pdf

Page 31 addresses your concerns.

Generally, reading the manual for a complex piece of equipment can be helpful. I have been known to do it myself!

Peter Wieck
Melrose Park, PA

Jean-Pierre Coulon

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May 14, 2018, 1:23:32 PM5/14/18
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Thanks for the manual, but I am not learning much.

This sythetizer had spent a few years on a shelf. After a few days with
the 220 V it restarted. I believe some accumulator was empty and it is
unable to boot in this case.

Hope it may help someone in the future :-)

Jean-Pierre Coulon

peterw...@gmail.com

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May 14, 2018, 2:12:12 PM5/14/18
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Please note the interpolations:

On Monday, May 14, 2018 at 1:23:32 PM UTC-4, Jean-Pierre Coulon wrote:
> Thanks for the manual, but I am not learning much.
>
> This sythetizer had spent a few years on a shelf. After a few days with
> the 220 V it restarted.

I am unclear whether it started (properly) after a few days, or it remains on standby mode?

I believe some accumulator was empty and it is
> unable to boot in this case.

Present tense?
>
> Hope it may help someone in the future :-)

Yeah. Actually reading a manual is typically my last resort.
>
> Jean-Pierre Coulon

bruce2...@gmail.com

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May 14, 2018, 10:00:47 PM5/14/18
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On Monday, May 14, 2018 at 1:23:32 PM UTC-4, Jean-Pierre Coulon wrote:
> Thanks for the manual, but I am not learning much.
>
> This sythetizer had spent a few years on a shelf.

Do you mean synthesizer?

Jean-Pierre Coulon

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May 15, 2018, 2:06:43 AM5/15/18
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On Mon, 14 May 2018, pf...@aol.com wrote:

> I am unclear whether it started (properly) after a few days, or it remains
> on standby mode?

It started properly.

> I believe some accumulator was empty and it is
>> unable to boot in this case.
>
> Present tense?

I believe some accumulator was empty and I believe it is unable to boot when
this accumulator is empty.

Bye,
--
Jean-Pierre Coulon

John Robertson

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May 15, 2018, 10:32:42 AM5/15/18
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There may well be some sort of rechargeable battery (apparently referred
to as an accumulator in the EU) for the CMOS memory in this tool that
requires enough charge to retain settings and when discharged won't
allow normal booting. I would open the device to make sure the battery
is not a Ni-Cad style and thus avoid the risk of battery leakage eating
your circuit boards...
The manual only states there is some kind of battery/accumulator in the
device but doesn't say what type it is - Ni-Cad, Lithium, etc.

John :-#(#

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