Atari A/V Mods – The Longhorn Engineer

Atari 7800 Video Sniffed

Parker — Tue, 06 Sep 2011 07:05:36 +0000

I have been wanting to do this for awhile but have not gotten around to it. I took my Open Bench Logic Sniffer and sniffed the e (in picture from top to bottom) of the Atari 7800 MARIA chip. This is what the signal looks like before it goes into the video mod (D/A converter).

I am still learning how this translates into a picture on the screen. If anyone has any insight into this let me know.

A/V Install Guides

Parker — Mon, 18 Jul 2011 02:03:48 +0000

Guides for the Atari A/V Mods

Read through the instructions carefully before attempting. Also read the disclaimer.

Atari 2600

Kit Install Guides

Assembling a 2600 Kit. V2.2E
Assembling a 2600 Kit. V2.2F – Current Version

Schematic NTSC V2.2F
Part List NTSC V2.2F
Schematic PAL V1.0
Part List PAL V1.0

Atari 7800

Kit Install Guides

7800 NTSC

Assembling a 7800 Kit. V2.1

Schematic NTSC V2.1
Part List NTSC V2.1

Printout and Drill Template

Atari A/V Mods

Parker — Sat, 16 Jul 2011 20:56:30 +0000

You’re not getting old. Thats RF fuzz! – SOLD OUT – NOW OPEN SOURCE

I used to offer a variety of A/V mods choices for the Atari 2600 and Atari 7800 consoles. The modification adds a S-video and composite video output to the Atari along with Stereo sound. The mods where very easy to install. If you can solder a wire you could install these kits.

Comparison between stock RF and the mod on a 7800.

Different Modding Options.

Fully Assembled Mod Kits are all put together and ready to be soldered into the Atari.
Unassembled Mod Kits include all the parts needed to build the kit.
Blank PCBs are just the bare PCB. No other parts are provided.
Atari Modding Service includes the mod and all parts. You ship the Atari to me and I will install the kit. I also offer a “Deluxe” Service which includes gold plated jacks. These jacks are not offered on the kits.
If you are a DIYer then the schematic is FREE.

The install guides to the mods can be found here.
All FreePCB Files can be found here.

Reviews

Ben Heckendorn’s Video Review of the 2600 mod: Link
Garner’s Video Review of the 2600 mod: Link
Chris Kennedy’s Review of the 2600 mod: Link

Atari 2600 Video Mod V2.2D PCB