TWEAKS & FIXES

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MANDATORY FIXES

Last post by tzok « Sat Feb 09, 2019 3:13 pm
Replies: 1
by exxos » Thu Jan 31, 2019 4:13 pm

I opened up this thread to list mostly mandatory fixes. While some may or may not agree with these fixes, I personally are classing them as mandatory...

1 Replies

423 Views

Last post by tzok
Sat Feb 09, 2019 3:13 pm
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

905 Views

Last post by Steve
Sun Aug 05, 2018 1:12 pm
STe replacing motheboard capacitors

Last post by docrv « Mon Apr 29, 2019 9:52 am

by docrv » Mon Apr 29, 2019 9:52 am

Hello guys,

Just to give you a feedback on changing the STe CA4003290 motherboard capacitors.

Qty original new value
11 16V 47 uF 16V 47 uF
6 16V...

0 Replies

98 Views

Last post by docrv
Mon Apr 29, 2019 9:52 am
Floppy write protected (when its not) fix.

Last post by exxos « Sat Apr 06, 2019 2:30 pm
Replies: 5
by exxos » Thu Dec 06, 2018 6:10 pm

IMG_3667.JPG

This is a shortened version of this thread..

The issue was with a STE machine, which was continuously or intermittently reporting...

5 Replies

817 Views

Last post by exxos
Sat Apr 06, 2019 2:30 pm
PLCC socket - Adjusting the contacts

Last post by kludge « Mon Mar 25, 2019 8:18 am
Replies: 3
by rubber_jonnie » Mon Dec 24, 2018 11:18 am

I spoke to exxos a couple of weeks back with regards to PLCC sockets, and how that over time the metal fingers that make contact with the chip can...

3 Replies

592 Views

Last post by kludge
Mon Mar 25, 2019 8:18 am
Falcon Csync video fault.

Last post by dhedberg « Fri Mar 22, 2019 12:56 pm
Replies: 9
by exxos » Wed Mar 20, 2019 10:33 pm

I had a email a few days ago from Steve asking about a capacitor bulging problem after re-capping his Falcon motherboard.. But this actually gets...

9 Replies

498 Views

Last post by dhedberg
Fri Mar 22, 2019 12:56 pm
FALCON CLOCK BUFFER PATCH NEW

Last post by exxos « Fri Mar 15, 2019 11:34 am
Replies: 2
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...

2 Replies

1154 Views

Last post by exxos
Fri Mar 15, 2019 11:34 am
TT Rom access speedup

Last post by guus.assmann « Mon Mar 11, 2019 7:12 pm
Replies: 32
by guus.assmann » Wed Mar 06, 2019 2:42 pm
1

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Hello,

So far I've tried this sucessfully on 3 different TT machines and it works well.
It only takes two diodes, Germanium or Schottky (Bat 48)....
32 Replies

1035 Views

Last post by guus.assmann
Mon Mar 11, 2019 7:12 pm
Electrolytics under Floppy drive, modded Falcon?

Last post by hunter44102 « Sat Feb 09, 2019 5:46 pm

by hunter44102 » Sat Feb 09, 2019 5:46 pm

Does anyone know what this mod was under my Falcon floppy? is it just replaced caps or a modification?

See pic thanks!...

0 Replies

238 Views

Last post by hunter44102
Sat Feb 09, 2019 5:46 pm
Gasteiner Atari Hard Drive fix - (floppy errors)

Last post by exxos « Thu Jan 03, 2019 1:45 pm
Replies: 1
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...

1 Replies

625 Views

Last post by exxos
Thu Jan 03, 2019 1:45 pm
Floppy failure fix - WIP

Last post by exxos « Fri Nov 30, 2018 10:23 pm

by exxos » Fri Nov 30, 2018 10:23 pm

While there can be a lot of reasons for the floppy drive to fail, such as bad PSU, bad drive etc. If a drive works in a PC but not a STE for example,...

0 Replies

371 Views

Last post by exxos
Fri Nov 30, 2018 10:23 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

10040 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

1695 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

1035 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

576 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

1432 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

930 Views

Last post by Cyprian
Fri Jul 27, 2018 12:22 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

544 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

572 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

631 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

1712 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

669 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

622 Views

Last post by exxos
Sun Jun 03, 2018 11:09 am
Stereo sound for ST

Last post by Smonson « Sun Nov 12, 2017 8:13 am
Replies: 7
by francouai » Fri Sep 08, 2017 11:43 am

Hey!
Not sure if I'm on the right board, but I have this funny/easy MOD for STF/ST to have Stereo sound output. :lol:

Check this:

schema :...

7 Replies

1746 Views

Last post by Smonson
Sun Nov 12, 2017 8:13 am
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

946 Views

Last post by Smonson
Mon Nov 06, 2017 11:10 am

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