ADB Mouse II works on one mac, not on another??

[lobust]

Completely ordinary M2706 ADB Mouse II, completely dead on my Quadra 800, works perfectly on my Quadra 700.

I have swapped it over multiple times to make sure. Another identical mouse and an adjustable keyboard both work perfectly on the Q800.

Q800 is a project machine, have it laid out on the desk while I sort the case out. Original PSU was toast, would boot the logic board but cut out if any drives were connected. I have a replacement PSU from a 8100 connected now, all seems fine.

When I first plugged the new psu into the board, I had no drives connected, just the monitor and this mouse. Board booted, mouse worked. I plugged the drives in, board booted, booted up from HD, all good, but suddenly the mouse was dead??

Plugged the mouse into the Q700, all good, assumed the ADB had died on the Q800 mobo. Stripped it and cleaned it with solvent cleaner, tried again, still dead. I don't know why, but I decided to check another mouse and to my surprise it worked perfectly. Plugged in the keyboard, also worked perfectly. Plugged in the original mouse, still dead. Original mouse back in the Q700, works perfectly!

What the hell??

 

[irarosieqelxs]

How did you deal with it later? My Mac also has this problem

 

[ArmorAlley]

See if little utilities like ADB-Reset, ADB Renewer or Focus BusTool works.

ADB-Reset: I can't find it on MG. I must upload it sometime.

ADB Renewer: https://macintoshgarden.org/apps/adb-renewer-12

Focus BusTool: https://macintoshgarden.org/apps/focus-bustool

A thought has just come to mind: is the ADB plug sitting properly in the socket? One of the ADB sockets on my TurboMouse is loose and doesn't always work.

 

[lobust]

I should have updated this thread, but I got another replacement PSU as the fan wasn't running in the first replacement and I was a bit skeptical of it, and the mouse in question now works properly on the 800.

I guess one/some of the outputs from the first replacement psu were marginal and that one mouse also has some marginal caps in it or something...

Everything else worked fine with the first PSU so I didn't really suspect it, I had the logic board laid out on the bench with multiple drives connected, nubus video card plugged in etc, and all working fine, just that one mouse.