Amiga.org

Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: lost lemming on February 24, 2010, 11:04:20 AM

Title: mouse cursor, up/down works but not left/right
Post by: lost lemming on February 24, 2010, 11:04:20 AM: I've tried different mouses it's not the mouse.
Sometimes if I just leave the mouse there, it will jump around on the horizontal axis at random times.
Any idea?
I damaged a track a while ago when fitting in my ESC scan doubler (which is fixed now with a jumpwire) I think it supplied 5v to the clock TTL chip below the denise. The clock ttl chip was essential for the multiplexer TTL chip to work. Do you think it's something to do with that?
Title: Re: mouse cursor, up/down works but not left/right
Post by: lost lemming on February 24, 2010, 11:11:32 AM: Does anyone know if it's possible to move the cursor around with the keyboard? I know you could do that with an ST holding alt and using the arrow pad. I very quickly need to do a change on workbench but the mouse is stopping me
Title: Re: mouse cursor, up/down works but not left/right
Post by: lost lemming on February 24, 2010, 11:20:04 AM: Quote from: lost lemming;544817
Does anyone know if it's possible to move the cursor around with the keyboard? I know you could do that with an ST holding alt and using the arrow pad. I very quickly need to do a change on workbench but the mouse is stopping me

also, after about 10 minutes of the amiga warming up, the mouse will eventually move ok. This it just really odd!
Title: Re: mouse cursor, up/down works but not left/right
Post by: koaftder on February 24, 2010, 11:58:36 AM: Quote from: lost lemming;544819
also, after about 10 minutes of the amiga warming up, the mouse will eventually move ok. This it just really odd!

I had this problem on an a3000 awhile back. Had battery damage and really screwed up DIP sockets. REmoving the sockets and soldering the denise directly to the board cleared it up. I think that's what I did.
Title: Re: mouse cursor, up/down works but not left/right
Post by: ElPolloDiabl on February 24, 2010, 12:01:38 PM: Amiga+Amiga+arrow

Definitely sounds like a trace, I had the same problem with my A1200 after an unsuccessful keyboard hack, although it was the keys that didn't work.
Title: Re: mouse cursor, up/down works but not left/right
Post by: koaftder on February 24, 2010, 12:02:33 PM: here are two links about what I did.

http://www.amiga.org/gallery/index.php?n=1326

"When i soldered denise to the board, i knicked a line under the chip when removing the socket. It looked real minor, so i didnt bother to check up on it. Turns out that was a mistake, as video and everything else with the system is top notch, i only get horizontal mouse movement. A quck check with the probe reveals that no vert signal is going to the chip, so here is my fix for that, everything is working great now."

http://www.amiga.org/gallery/index.php?n=1325

Odd, I swear I had the problem *before* I did the repair. Maybe not.
Title: Re: mouse cursor, up/down works but not left/right
Post by: lost lemming on February 24, 2010, 12:10:24 PM: Quote from: Fanscale;544833
Amiga+Amiga+arrow

Definitely sounds like a trace, I had the same problem with my A1200 after an unsuccessful keyboard hack, although it was the keys that didn't work.

Thanks.
What is trace?
Title: Re: mouse cursor, up/down works but not left/right
Post by: ElPolloDiabl on February 24, 2010, 12:51:47 PM: Quote from: lost lemming;544836
Thanks.
What is trace?

track
Title: Re: mouse cursor, up/down works but not left/right
Post by: lost lemming on February 24, 2010, 01:34:06 PM: ok, I'm gonna take my cam up and take a picture of it all. Do all my amiga surgeory in the loft!

the funny thing is i got it work again just by jiggling the jumpwire
Title: Re: mouse cursor, up/down works but not left/right
Post by: lost lemming on February 24, 2010, 01:52:01 PM: ok the PIC DONT work so go here

http://www.caravan-soundsystem.org/jumplead.jpg

edit: so yeah I jiggled that and it works now(http://http://www.caravan-soundsystem.org/jumplead.jpg)(http://www.caravan-soundsystem.org/jumpwire.jpg)(http://www.caravan-soundsystem.org/jumpwire.jpg)
Title: Re: mouse cursor, up/down works but not left/right
Post by: shaf on February 24, 2010, 02:28:58 PM: It sounds like a cold solder joint. I recommend that you have someone redo the joints with a low wattage Solder Iron (25W).