A3000 problems, CPU+ROM

[orange]

I got an A3000 that is in bad shape (probably shipping caused it ).
The CPU has deformed pin1:
photo1
photo2
photo3

that pin is welded to one on its left side (tested with multimeter).
should I try to separate them before turning on A3000?

Which way is the ROM tower oriented, and in what set of sockets does it go?

[orange]

so they should be separated? all A3000 motherboard photos on big book suggest that is the case.

what about the ROM tower? is this correct?
I found some old posts that say there are different versions, with various orientation

[orange]

thanks for replies.
The ROM tower came loose in shipping, maybe it hit the CPU.

The two pins on CPU (first and last one) are definitely soldered together. I tried separating them but its tough.
Only desoldering with solder wick/braid might do it but its risky.

It seems unlikely to me that it was never before powered on with those pins connected together, but I'll separate them.


BTW, motherboard is v6.3 and ROM tower is v1.

[orange]

er.. yes?

It's tough to imagine how shipping could lift a pin and re-solder it in a new location. Is it soldered down?

I agree, but deformation might be caused by a blow. Is what soldered down? CPU-yes. the pins together-yes.

Do you have schematics or info on the net to reveal what signals are on those 2 pins?
According to my schematic, if CPU is SMD (surface mount device, ?), pins 1,2,5, etc are grounds.

I couldn't find any pinouts. What does your schematic say about last pin? (because I believe that one is soldered to pin1). EDIT: wait, I don't know which way numbering goes, so it might be pins 1 and 2 are connected? then its OK?

If the pin is soldered in that location, it must be a purposeful modification

but it could be someone dropping the soldering iron there, anyway:

DO NOT TURN ON YOUR AMIGA 3000 UNTIL YOU SEPARATE THE PINS OF THE CPU!!!

Can the tower be installed differently than it is? Did you remove it and forget?

yes there is a pair of slots so 4 combinations; it was 'removed' in shipping

On the tower PCB pin 1 should be a square solder point. Also, when the socket notch points upward, pin 1 is the top left one (device side that is).

I'm not sure if I understand this, is the ROM chip pin1 on same side as socket pin1 (away from keyboard connector)..  rom tower goes into U182, and U183?

(I gave you my ROM tower version because some say it matters.)

[orange]

I did it (leaving CPU as is), and it works great..  :banana:
(like you said, the ROM socket on tower does have the square pin 1)
After boot there is a menu with choice of ROM (1.3 or 2.x)

The only small problem left is that I'll need some sort of cradle for hard disk, I don't see a way or place for mounting it now.
Also the battery needs replacing, the usual LithBatt.lha should do it?