A4000 memory and video output

[polbit2]

I just opened my "new" 4000 to re-install the CV64/3D and try to get it working again, and unfortunately found a big problem. All my SIMM sockets where filled, and the machine shows 4Mb FAST, so I assumed they were 1MB SIMMS... Well, they are not - they are all 4MB SIMMs... Looks like only one in bank 0 works, as I tested every combination, and the other banks are dead... Does this mean that I need to put in new sockets, or could it be one of the ICs that is busted? There isn't really any battery damage that I can see...

Another problem is that the video output looks less sharp than my good old A2000. All letters have a bit of red shadow to it, etc. Is this something that is normal for AGA machines, or adjustable, or can I replace a capacitor or two, or a major pain in the a$$?

And finally, does anybody know of a place in the USA that is reputable and can fix that kind of stuff, or should I send it to Amiga France, and how do I get in contact with the guy in France?

[rkauer]

I could not help with France technician.

But if you not have the skills to make some "ironwork", skip this little help:

Find all electrolythics caps in the MB. Write their values, buy new ones and replace ALL of them (is a cheap thing to do).

That SIMM problem is very strange. Try put another SIMMs on the mobo. Or not fill the 1st bank. Also verify mobo straps.

If nothing helps: pray! :-(

[dannyp1]

Here in the US try contacting Ed Jeffries.  He's probably the best still working on Amiga's here.
Video Lab
5903 Woodson
Mission, Kansas  66202
913-403-0045

He has over 20 years experience.  Fixed a 4000T for me and did excellent work.  I would give him a call and see what he says.    Dan

[polbit2]

Thanks, I'll give him a try!