A2000 mouse-port is dead.. I think..

[Leifern]

Hi,


I've got a really nice A2000 that i dug up today, only to find the mouse doesn't work. If the mouse-port is the left port, then only the mouse buttons are working. The mouse is fine, as it's the same mouse as i'm using on my 1200.

Does this meen i have to get a new Motherboard, or is it fixable?

Please help, i would love to get this beast up and running again!

[Leifern]

Thanks for the reply Doobrey.

I don't think it ever worked really. I bought it a few years back, from my old school. It had been used for video editing. And the teacher had plugged in and out something occupying the mouse port (something used with a genlock i think) so many times the mouse had stopped working. However, everything else is working fine.

Thanks for the link, but i really donæt understand all those number.

-----------------------------------------------------------
" 1#  Mouse does not move, left and right mouse buttons okay, joystick okay:


    * EMI 1401 5.1 ohm resistor (supplies 5 volt to mouse). A2000 Rev.6 and up: F1 4 amp pico fuse.
    * 8362 U4 (U201 A2000)
    * 74LS157 U15 (U202 A2000)
-----------------------------------------------------------

Does this meen i have to replace some chips on the motherboard?

And i'm sorry to say, i don't know what rev. it is. Probably early. How can i find out?

I've got an advanced Amiga analyzer, if any data it will give can "help people help me"!

[Leifern]

Pin 1-4 controlls the movement of the mouse, right? None of these get any data as far as the "AAA" is concerned. So this meens i have to either get a new fuse, or if my board is older, i will have to add som wire to it?

Check between the two middle pins of the bottom row of the mouse port. there should be 5v there.

Hehe.. Sorry, i don't know what i'm looking for.. Feel like a pissant here.. Hehe :roll:


----------------------------------------------
Edit: My board is rev.6! Just found out!
So i guess i'll have to replace the "F1 4 amp pico fuse"..?
-----------------------------------------------

[Leifern]

Would this work?

[Leifern]

Thanks alot JimS and Doobrey.

I'll order a couple of those, and tell you all how it went! ;-)

[Leifern]

YES! It acually WORKED! Thanks alot!

Now all i need is a keyboard