Jump to content
IGNORED

Aquarius power replacement?


oracle_jedi

Recommended Posts

I recently picked up at Aquarius.

 

I have a soft spot for hopeless little 8-bit micros with unusable keyboards.   It joins a CGL M5 and a Commodore MAX in my collection.

 

Anyway I have the parts to do the composite video mod.  But I've also noted that the power supply buzzes quite loudly.  The output voltages are unique, but looking at the schematic I see that they are regulated to +5V, +12V and -12V.

 

So....

 

Can the PSU be replaced with one from, say, an Atari ST.  Has anyone done this?  By-pass the voltage regulation on the motherboard and deliver the three final voltages.  And do I even need the -12V if I don't ever plan to use the printer?

 

 

Link to comment
Share on other sites

I'm not an expert but looking the schematics seems that isolating the two red spots I've drawn and injecting the right DC voltage there you can make the machine run happily (well, without -12 of course):

 

image.thumb.png.da935959da46bf990149a5f9fb91a4c3.png

 

No idea if there's a way to avoid cutting traces or being more elegant...

Edited by jltursan
  • Like 1
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...
  • Recently Browsing   0 members

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