This Atari 800XL computer was featured on Adrian's Digital Basement July 29, 2023. Adrian did some troubleshooting, found a bad ANTIC chip, then did the chroma luma S-Video mod. Let's install the missing ANTIC chip and see if I can revive the yellowed Atari 800XL computer case bottom, then it will be ready for it's new owner.

Fun-Fact: There are 4 variations of the Atari ANTIC chip: C012296 - NTSC: Used in Atari 400, 800, and 1200XL computers. C014887 - PAL/SECAM: Used in Atari 400 and 800 computers. C021697 - NTSC: Used in Atari 600XL, 800XL, and XE models. C021698 - PAL/SECAM: Used in Atari XL, and XE models.

Subscribe:
https://youtube.com/geekwithsocialski...

--- Video Index

0:00 - Intro: Can I restore this Atari 800XL case from Adrian's Digital Basement?
1:00 - Taking a look at the 800 XL mustard yellow case bottom
1:42 - I like using Oxi Clean Laundry and More Stain Remover as Retrobright
2:51 - Taking the top off the Atari 800 XL exposing the motherboard PCB
2:55 - This Atari 800XL is missing the ANTIC chip. Adrian didn't have a spare
3:12 - Checking out the Chroma Luma S-Video mod on the bottom of the 800XL PCB
3:48 - Spraying down the case bottom with Oxi Clean Stain Remover
4:35 - 2 hours later: Checking out the retrobrighting process so far
5:09 - Installing the missing ANTIC chip version C021697 NTSC used in Atari 600XL, 800XL, and XE models.
5:18 - 4 variations of the ANTIC chip: C012296 (NTSC), C014887 (PAL/SECAM), C021697 (NTSC) and C021698 (PAL/SECAM)
6:16 - The final Atari 800XL case reveal after retrobrighting
6:59 - This Atari 800 XL computer case looks amazing!
7:20 - Outro

--- Video Links

Adrian's Digital Basement - Can I revive this black screen Atari 800XL?
   • Atari 800XL repair: Black screen at p...  

ANTIC Alphanumeric Television Interface Controller variations:
https://en.wikipedia.org/wiki/ANTIC

--- Channel Links

Subscribe:
https://youtube.com/geekwithsocialski...

#atari #computers #repairing