TWEAKS & FIXES

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STE DAC NOISE FIX - BETA

Last post by Steve « Sun Aug 05, 2018 1:12 pm
Replies: 1
by exxos » Mon Aug 21, 2017 9:13 am

dacfixfi.jpg

I have heard many reports that the STE DAC playback has bad noise and high pitch whistles so I was asked to look into it. My own STE...

1 Replies

571 Views

Last post by Steve
Sun Aug 05, 2018 1:12 pm
Hissing and whistling in the STe audio output

Last post by exxos « Tue Nov 13, 2018 9:36 pm
Replies: 112
by Paulo P » Sun Feb 18, 2018 2:46 pm
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Hi.
I would like to ask about the STe DAC Audio Noise Fix . I've noticed a little noise , high hissing or whistling in the audio output from my STe...
112 Replies

5030 Views

Last post by exxos
Tue Nov 13, 2018 9:36 pm
STE VIDEO GHOSTING FIX

Last post by sandord « Thu Oct 25, 2018 7:27 pm
Replies: 6
by exxos » Mon Aug 28, 2017 11:34 am

While I was developing my replacement AtariPSU I noticed the video quality improved immensely. However, I still saw some ghosting on the display...

6 Replies

1005 Views

Last post by sandord
Thu Oct 25, 2018 7:27 pm
Falcon Fan slow down

Last post by KyleB « Tue Sep 04, 2018 5:39 pm
Replies: 5
by exxos » Mon Sep 03, 2018 3:04 pm

I fitted a 7808 Regulator as shown to slow down the Falcon fan making it quieter.

2 regulator pins solder into the motherboard as shown. The right...

5 Replies

632 Views

Last post by KyleB
Tue Sep 04, 2018 5:39 pm
Quickshot QS-130F joystick repair

Last post by sandord « Sat Aug 25, 2018 6:19 pm

by sandord » Sat Aug 25, 2018 6:19 pm

So I bought a little gift for a dear friend the other day. He recently got himself an ST after living without one for many years so I wanted to...

0 Replies

222 Views

Last post by sandord
Sat Aug 25, 2018 6:19 pm
Falcon ROM Wait States (Speed up your falcon ROM)

Last post by exxos « Thu Aug 09, 2018 8:47 pm
Replies: 4
by exxos » Mon Aug 28, 2017 11:28 am

FALCWS.JPG

A lot of Falcon's had slower ROM's meaning Atari had to use wait states in order to slow the ROM access speed down. You can however...

4 Replies

913 Views

Last post by exxos
Thu Aug 09, 2018 8:47 pm
TT VME Graphics - Revisited

Last post by Cyprian « Fri Jul 27, 2018 12:22 pm
Replies: 6
by Atarian Computing » Fri Jul 27, 2018 10:57 am

Copied from my blog: TT VME Graphics - Revisited

Just recently I posted the article TT VME Bus Fix - Does it really make it faster? where I...

6 Replies

373 Views

Last post by Cyprian
Fri Jul 27, 2018 12:22 pm
Gasteiner Atari Hard Drive fix - (floppy errors)

Last post by exxos « Thu Jul 26, 2018 5:54 pm

by exxos » Thu Jul 26, 2018 5:54 pm

While ago I put up for sale a Gasteiner hard drive and it all tested out perfectly well. The problem was that some reason prevented the floppy drive...

0 Replies

262 Views

Last post by exxos
Thu Jul 26, 2018 5:54 pm
TT Cable Management and Cooling - Extreme Edition

Last post by Atarian Computing « Thu Jul 26, 2018 5:52 pm
Replies: 2
by Atarian Computing » Thu Jul 26, 2018 3:46 pm

IMG_0239.JPG

Read all about it here!

2 Replies

175 Views

Last post by Atarian Computing
Thu Jul 26, 2018 5:52 pm
My TT Gets Some Love

Last post by exxos « Mon Jul 23, 2018 5:40 pm
Replies: 4
by Atarian Computing » Mon Jul 23, 2018 4:49 pm

I made a long post on my blog:

IMG_0214.JPG

4 Replies

248 Views

Last post by exxos
Mon Jul 23, 2018 5:40 pm
TT VME Bus Fix - Does it really make it faster?

Last post by Cyprian « Sun Jul 22, 2018 7:42 pm
Replies: 4
by Atarian Computing » Sat Jul 21, 2018 3:32 pm

From my blog:

So I decided to attempt the VME Bus Fix as per Atari's rework procedure. The fix saves 1 clock cycle per transfer so it just might be...

4 Replies

271 Views

Last post by Cyprian
Sun Jul 22, 2018 7:42 pm
Motherboard capacitors - which to replace?

Last post by exxos « Fri Jul 13, 2018 12:06 pm
Replies: 7
by kodak80 » Thu Dec 21, 2017 8:35 am

OK, I have now had fun replacing capacitors on my ZX Spectrum boards (x3) and changing these to composite video. This was my learning ground and all...

7 Replies

984 Views

Last post by exxos
Fri Jul 13, 2018 12:06 pm
Keyboard port repair.

Last post by exxos « Mon Jun 11, 2018 11:09 am

by exxos » Mon Jun 11, 2018 11:09 am

One of the most common things to go wrong is that the mouse and joystick ports the malfunction when solder points break.

Keyboard such as this one...

0 Replies

365 Views

Last post by exxos
Mon Jun 11, 2018 11:09 am
MEGA ST BLITTER INSTALL

Last post by exxos « Sun Jun 03, 2018 11:09 am

by exxos » Sun Jun 03, 2018 11:09 am

If your MEGA hasn't had a blitter fitted from factory, you can easily fit one..

However, there are 2 solder jumpers (circled in red) which need to...

0 Replies

343 Views

Last post by exxos
Sun Jun 03, 2018 11:09 am
FALCON CLOCK BUFFER PATCH NEW

Last post by exxos « Tue Nov 28, 2017 3:12 pm
Replies: 1
by exxos » Tue Aug 22, 2017 10:52 pm

buff1.jpg

My buffer board replaces any other/older boards/hacks which may be in the Falcon already. There are so many versions of this mod its...

1 Replies

724 Views

Last post by exxos
Tue Nov 28, 2017 3:12 pm
New Stacy Display

Last post by Smonson « Mon Nov 06, 2017 11:10 am
Replies: 1
by Atarian Computing » Sun Oct 15, 2017 2:05 pm

With permission from JoeAtari:

New Stacy Display

My STBook has been out for repairs for quite some time, so I started thinking about making some...

1 Replies

660 Views

Last post by Smonson
Mon Nov 06, 2017 11:10 am
How I fixed my 20 bombs error OR How I messed up badly and recovered

Last post by exxos « Mon Oct 30, 2017 10:01 pm
Replies: 1
by Elethiomel » Mon Oct 30, 2017 9:44 pm

Recently I decided to upgrade my 1040ST with as much Exxos kit as I could (and more). The aim was to build a system with the following

4MB RAM...

1 Replies

427 Views

Last post by exxos
Mon Oct 30, 2017 10:01 pm
SR98 PSU GETS MORE LOVE

Last post by exxos « Mon Oct 23, 2017 11:59 pm
Replies: 7
by exxos » Tue Aug 22, 2017 10:50 pm

psu-new.png

These SR98 PSU's are the most common that I have seen in the UK, the trusty SR98. Well these PSU's from my observations have been...

7 Replies

1731 Views

Last post by exxos
Mon Oct 23, 2017 11:59 pm
MEGA ST BLITTER PATCH

Last post by exxos « Fri Sep 22, 2017 4:01 pm

by exxos » Fri Sep 22, 2017 4:01 pm

blitter_patch.jpg

MOD.jpg

If you open a recent Atari ST notice that on 68000 CPU is mounted a small PCB. Here is a modification whose goal is...

0 Replies

495 Views

Last post by exxos
Fri Sep 22, 2017 4:01 pm
STFM VIDEO SYNC FIX

Last post by exxos « Mon Aug 28, 2017 11:44 am

by exxos » Mon Aug 28, 2017 11:44 am

It seems to be a common problem in recent years of the STFM not being able to sync correctly on a TV or monitor. I have seen several machines over...

0 Replies

445 Views

Last post by exxos
Mon Aug 28, 2017 11:44 am
SONY MP-F11W REFURB

Last post by exxos « Thu Aug 24, 2017 3:48 pm

by exxos » Thu Aug 24, 2017 3:48 pm

Like most other floppy drives, they are a billion years old now and need some servicing. So this is the how to guide to clean up and possibly fix bad...

0 Replies

765 Views

Last post by exxos
Thu Aug 24, 2017 3:48 pm
Axial capacitors

Last post by exxos « Tue Aug 22, 2017 10:58 pm

by exxos » Tue Aug 22, 2017 10:58 pm

axial_cap.jpg

In light of Axial capacitors being harder to find, not very good spec, or simply stupid prices, I came up with this little adapter...

0 Replies

376 Views

Last post by exxos
Tue Aug 22, 2017 10:58 pm
FALCON AUDIO TWEAKS

Last post by exxos « Mon Aug 21, 2017 8:44 pm

by exxos » Mon Aug 21, 2017 8:44 pm

FALCON HARDWARE MODIFICATIONS as described on p. App 1-24 in the Cubase Audio Falcon manual

To remove the bass boost on the output:
Change C58 and...

0 Replies

426 Views

Last post by exxos
Mon Aug 21, 2017 8:44 pm

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