A3000 joy down not working only on games

[sdyates]

My A300 works very well other than this one small problem:

Playing F/A-18 Interceptor and another game.

It is as though someone in holding down the down arrow or joy down. If F/A-18, the jet ius always trying to pull up and eventually crashes.

I Aliens, the character always moves downward and in another, the action is similar.

I have OS3.1. Could it be that any of my chips may be bad? There ios no hardware damage from a battery leak and the battery is fine.

Thanks

[sdyates]

Oh, I have a spare A3000 - any chips I could swap out?

[sdyates]

lol - I have tried other joy sticks... and egt this... it happenes without a joystick or keyboard even hocked up

[sdyates]

I will try replacing paula and the CIAs...

And yes, I did try on another A3000. Definately an issue here somewhere.

Awesome guys. Gives me somehting to check before the webcast

[sdyates]

I replaced both CIAs and even put them in the right direction

Replace Paula.

I replaced and tested each separately. There is no difference noticed.

Other ideas my find friends?

NOTE: The chips I replaced were from another machine where this problem did nto occur. This machine had 2.04.

[sdyates]

This is great info. I replaced the Denise right away as it was a simple task and the least timely.

I downloaded the application and found that there is certianly a problem getting inputs fromthe joystick port.

I am unfamiliar with U401, its location or if it can be removed witha vicegrip or not

Which other parts could I swap out to diagnose? Or, will I know require a special vendor to do this?

Thanks for your help thus far