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a problem with sound

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Chris

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Nov 29, 2012, 9:35:06 AM11/29/12
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I wonder if anyone can help?

A 3.7 RPC that I am wanting to use has no sound at the moment.

I have looked at sound in !Boot and note that there is less
functionality than with this one.

I can select different voices on this one. On the problem one it is
fixed at WaveSynth-Beep and there is no sound when I change to Loud
from Quiet, which there is on here.

Any ideas?

--
Chris de Cordova

Monday is an awful way to spend 1/7th of your life.

Chris Evans

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Nov 30, 2012, 5:41:06 AM11/30/12
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In article <52f6422e6...@ukgateway.net>, Chris
<URL:mailto:deco...@ukgateway.net> wrote:
> I wonder if anyone can help?
>
> A 3.7 RPC that I am wanting to use has no sound at the moment.
>
> I have looked at sound in !Boot and note that there is less
> functionality than with this one.
>
> I can select different voices on this one. On the problem one it is
> fixed at WaveSynth-Beep and there is no sound when I change to Loud
> from Quiet, which there is on here.
>
> Any ideas?

I deduce sound was working, now no sound at all.

Is sound configured correctly?
Try 16bit sound & oversampling both OFF if no joy try both ON.
A 3.7 RPC may or maynot have 16 bit sound hardware!

other possibilities:
If the computer has been moved or internals accessed Sound card if fitted
dislodged.
or
Sound failing is often one of the first signs of motherbaord damage due to a
leaking battery. If so it is very fiddly to repair and it would be cheaper
to get a another motherboard!

Chris Evans

--
CJE Micro's / 4D 'RISC OS Specialists'
Telephone: 01903 523222 Fax: 01903 523679
ch...@cjemicros.co.uk http://www.cjemicros.co.uk/
78 Brighton Road, Worthing, West Sussex, BN11 2EN
The most beautiful thing anyone can wear, is a smile!

Chris

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Nov 30, 2012, 7:57:08 AM11/30/12
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Thanks for your thoughts, Chris.

In article <ant30100...@client.cjemicros.co.uk>, Chris Evans
<ch...@cjemicros.co.uk> wrote:
> I deduce sound was working, now no sound at all.
Yes it was

> Is sound configured correctly?
Going to check next time I am there.

> Try 16bit sound & oversampling both
> OFF if no joy try both ON.
tried first - no change. Don't know how to try second.

> A 3.7 RPC may or maynot have 16 bit
> sound hardware!
It must have, because it has worked before.

> other possibilities: If the computer has been moved or internals
> accessed Sound card if fitted dislodged. or Sound failing is often
> one of the first signs of motherbaord damage due to a leaking
> battery. If so it is very fiddly to repair and it would be cheaper
> to get a another motherboard!

I had just moved it from one place where it worked when last used to
another where it didn't work at first switch on.

I have just gone through the battery change bit with this one and
don't think the use I will get out of it will be worth that!!! I want
to run one simple program that needs sound, and not very often at
that!

--
Chris de Cordova

Shin: a device for finding furniture in the dark.

druck

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Nov 30, 2012, 7:47:33 PM11/30/12
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On 30/11/2012 12:57, Chris wrote:
> I have just gone through the battery change bit with this one and
> don't think the use I will get out of it will be worth that!!! I want
> to run one simple program that needs sound, and not very often at
> that!

You might have accidentally unplugged the audio cable, or dislodged the
16bit sound card (if fitted).

---druck

Chris

unread,
Dec 5, 2012, 3:54:00 PM12/5/12
to
In article <52f6422e6...@ukgateway.net>,
Chris <deco...@ukgateway.net> wrote:
> I wonder if anyone can help?

> A 3.7 RPC that I am wanting to use has no sound at the moment.

> I have looked at sound in !Boot and note that there is less
> functionality than with this one.

> I can select different voices on this one. On the problem one it is
> fixed at WaveSynth-Beep and there is no sound when I change to Loud
> from Quiet, which there is on here.

Today I did a few * con things .... nothing worked. Took the lid off
and poked around inside - nothinbg appeared to be loose... put it
back together and powered up and got a very loud bleep - sound on!!!
Hey Ho! Success. Turned off and went home.

Later, I tried it again ... no sound again .... ????

When I looked inside there were two things the same as plugged into
the back of the CD drive - could either of them be something to do
with sound? I couldn't see anywhere they should be plugged into. In
fact, I couldn't see anything that might be anything to do with sound
... are there and pictures anywhere that show me what I am looking
for?

--
Chris de Cordova

All those who believe in psychokinesis, raise my hand.

Alan Dawes

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Dec 6, 2012, 8:29:35 AM12/6/12
to
In article <52f97be2d...@ukgateway.net>,
Are you using the internal speaker or have you got an external amp and
speakers plugged in? If it is the former then I would suggest that
sometime in the past a plug has been used and that the little springy
"switch" inside the socket that disconnects the internal speaker when
external headphones/amp speakers are used has now been bent too far so
that it no longer makes proper contact when the plug is removed. When you
fiddled about inside you porbably disturbed it enough for it to make
intermittant contact. You will either need to replace or bypass the socket
or use external amplified speakers. - I've got my old RiscPC connected to
the amp and speakers in the monitor for this very reason.

Alan

--
alan....@argonet.co.uk
alan....@riscos.org
Using an Acorn RiscPC

Chris

unread,
Dec 7, 2012, 5:16:45 AM12/7/12
to
In article <52f9d708cc...@argonet.co.uk>,
Alan Dawes <alan....@argonet.co.uk> wrote:
> I've got my old RiscPC connected to
> the amp and speakers in the monitor for this very reason.

I have separate amp/speakers that work fine. There is no sound with
or without them. It was previously used without them, before I moved
it.

Best guess is something is disconnected but I can;t see what and to
be honest don't know where I am looking! Should I take the CD and
floppy drives out and look underneath them?

--
Chris de Cordova

A clear conscience is usually the sign of a bad memory.

Chris Evans

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Dec 7, 2012, 8:03:58 AM12/7/12
to
In article <52f97be2d...@ukgateway.net>, Chris
<URL:mailto:deco...@ukgateway.net> wrote:
> In article <52f6422e6...@ukgateway.net>,
> Chris <deco...@ukgateway.net> wrote:
> > I wonder if anyone can help?
>
> > A 3.7 RPC that I am wanting to use has no sound at the moment.
>
> > I have looked at sound in !Boot and note that there is less
> > functionality than with this one.
>
> > I can select different voices on this one. On the problem one it is
> > fixed at WaveSynth-Beep and there is no sound when I change to Loud
> > from Quiet, which there is on here.
>
> Today I did a few * con things .... nothing worked. Took the lid off
> and poked around inside - nothinbg appeared to be loose... put it
> back together and powered up and got a very loud bleep - sound on!!!
> Hey Ho! Success. Turned off and went home.
>
> Later, I tried it again ... no sound again .... ????

O.k. An intermitant fault.

Probably a poor connection. But tracking it down isn't easy as quite a few
permutations.

If I understand you correctly, you have recently had the battery changed in
this RPC, correct?

If yes had the battery gone furry?
If yes there could be an intermitant fault on the PCB :-(

I believe you have a number of RiscPCs, could you swap this RiscPC for
another one performing a role that doesn't need sound?

> When I looked inside there were two things the same as plugged into
> the back of the CD drive - could either of them be something to do
> with sound? I couldn't see anywhere they should be plugged into. In
> fact, I couldn't see anything that might be anything to do with sound
> ... are there and pictures anywhere that show me what I am looking
> for?

Quite a few hardware permutations, but as it has worked with the
configuration you have pictures wouldn't help.

We can help more one to one but we would have to start charging for our
time!

Dave Plowman (News)

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Dec 7, 2012, 9:09:21 AM12/7/12
to
In article <52fa49375...@ukgateway.net>,
Chris <deco...@ukgateway.net> wrote:
> In article <52f9d708cc...@argonet.co.uk>,
> Alan Dawes <alan....@argonet.co.uk> wrote:
> > I've got my old RiscPC connected to
> > the amp and speakers in the monitor for this very reason.

> I have separate amp/speakers that work fine. There is no sound with
> or without them. It was previously used without them, before I moved
> it.

> Best guess is something is disconnected but I can;t see what and to
> be honest don't know where I am looking! Should I take the CD and
> floppy drives out and look underneath them?

There's normally an audio cable (extra to the power and IDE ones) from the
CD unit to the main board. This is to play audio CDs through the sound
system without processing. Does this work? It might help determine wether
it is a hardware or software problem.

--
*I don't feel old. I don't feel anything until noon. Then it's time for my nap.

Dave Plowman da...@davenoise.co.uk London SW
To e-mail, change noise into sound.
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