Jump to content
IGNORED

Atari 400 System Reset issue


slx
 Share

Recommended Posts

After a major restoration/retrofit session (NOS keyboard, new upper case, Super Colour CPU card and 48/52K RAM Card as well as swap of the system crystal to PAL) my 400 seems to work fine with the exception of the [sYSTEM RESET] key.

 

I have to admit that I did not test the keyboard that thoroughly so I'm not sure if that key ever worked.

 

I noticed some "black spots" in two of the conduits on the mylar keyboard connector and would appreciate feedback on whether that could be the culprit and if/how it can be tested and/or repaired.

 

post-4219-0-35424100-1514549072_thumb.jpg

 

I set up the new RAM card to run Newell OS N - so different System Reset behavior would be another possible explanation. As it is supposed to switch to Omnimon using Option+System Reset that doesn't look like a plausible explanation, though.

 

 

 

 

Link to comment
Share on other sites

test conductivity along that trace with a multimeter? If its bad, that looks like a good candidate for repair with silver conductive paint/pen.

 

Isn't it embedded between two layers of mylar? Can I pry those apart without ripping everything apart?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...