Noisy Atmos

If you want to ask questions about how the machine works, peculiar details, the differences between models, here it is !
How to program the oric hardware (VIA, FDC, ...) is also welcome.
Post Reply
AndyGarton
2nd Star Corporal
Posts: 19
Joined: Sat Jun 15, 2013 1:51 pm

Noisy Atmos

Post by AndyGarton » Tue Dec 24, 2013 8:57 am

Hi all, my Atmos works fine, but makes both a high frequency whine (which I can't hear but the kids can and it drives them mad!), and a whirry-buzzy (!) sound which I can hear. Do they "all do that" or is this something I can fix please?

User avatar
Dbug
Site Admin
Posts: 2326
Joined: Fri Jan 06, 2006 10:00 pm
Location: Oslo, Norway
Contact:

Re: Noisy Atmos

Post by Dbug » Tue Dec 24, 2013 9:47 am

Mine do that but only during the boot sequence when the memory is filled with the black and white band patterns, after that it gets silent.
Are you using the original PSU or a replacement?

AndyGarton
2nd Star Corporal
Posts: 19
Joined: Sat Jun 15, 2013 1:51 pm

Re: Noisy Atmos

Post by AndyGarton » Tue Dec 24, 2013 9:53 am

It's a replacement (9v, 600ma).

AndyGarton
2nd Star Corporal
Posts: 19
Joined: Sat Jun 15, 2013 1:51 pm

Re: Noisy Atmos

Post by AndyGarton » Tue Dec 24, 2013 4:06 pm

So it's not the PSU because I dug out my other "broken keyboard" (see other thread :oops:) Atmos and it doesn't make the same noise with the same PSU. So any hints on what I might need to repair or replace on the board of the noisy one still much appreciated.

User avatar
iss
Flight Lieutenant
Posts: 471
Joined: Sat Apr 03, 2010 5:43 pm
Location: Bulgaria
Contact:

Re: Noisy Atmos

Post by iss » Wed Dec 25, 2013 10:45 am

From where come these sounds ? (from internal speaker or from attached TV).
Else, if something need to be replaced then the "usual suspects" are AY-3-8192 or/and VIA6522.

AndyGarton
2nd Star Corporal
Posts: 19
Joined: Sat Jun 15, 2013 1:51 pm

Re: Noisy Atmos

Post by AndyGarton » Wed Dec 25, 2013 10:48 am

It's from the Atmos itself, hard to say from exactly where.

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests