A2630 Rev 9 CPU Clock Module (Oscilator)

[DamageX]

ROMs:
http://www.hyakushiki.net/junk/a2630lo.bin
http://www.hyakushiki.net/junk/a2630hi.bin

try holding both mouse buttons when you power it on and see if you get the 68000/68030 screen

[melange]

Wow, thanks everyone so very much.  I now have enough to play with.  

Still convinced its the processor at the moment, and have ordered a stack of 68030's off ebay.  Can't be sure if they will be the correct speed though.  Even if they are slower they should be compatible providing I match the speed with the crystal.  If they are faster than 25mhz, then I should be able to drive them slower with the current 25mhz crystal.  Is that a fair assumption, or have I got it all wrong?

melange wrote:
Wow, thanks everyone so very much.  I now have enough to play with.  

Still convinced its the processor at the moment, and have ordered a stack of 68030's off ebay.  Can't be sure if they will be the correct speed though.  Even if they are slower they should be compatible providing I match the speed with the crystal.  If they are faster than 25mhz, then I should be able to drive them slower with the current 25mhz crystal.  Is that a fair assumption, or have I got it all wrong?

You seem to have it right as far as I can tell. However, I really doubt it is the processor that's dead.

I remember back in 1992 I worked at the advertising department of Dumoulin, electronics retailers, and I used to do the newspaper ads with Professional Page on a 2000 equipped with a 2630 that failed one day and had to replace it with an RCS Fusion 40, made here in Montreal BTW.

We gave the 2630 to Software House and they fixed and sold it back. I later learned that the problem was damaged traces inside the PCB caused by the heating of the CPU and that the 2630 often suffered this type of problem.

Commodore probably tried to save money on the PCBs and got low quality ones.

[melange]

@eslapion

If your correct then I have a real task on my hands.  Lots of tracing can take a long time to decipher, but the schematics are there so I might see what I can find.  I notice that a earth trace has been added between two of the logic chips on the board so perhaps your correct.  I will have a look and see if I can find anything obvious.  Cheers  :-)

At least the processors are cheap so will make good spares for things in the future.

[slazzer]

Damn - you're out of luck. For _years_ after I owned one (or ever touched an Amiga) I had images of the 2 ROMs for A2630 (as well as the jumper info etc.) on my HD. Gone now though :-/

I inherited a 2630 - put it in my 2000 (or was it 1500 ?) which had KS2.0 ... didn't work - but as I was doing bits of work for a company registered as a C= developer, I persuaded C= UK to send me a pair of ROMs, which a mate then blew for another mate in posession of an old 2630 .

Haaah, happy days :-)

[melange]

Thanks slazzer, I have 2 or 3 different versions to work with now.  Tried them all and no difference.  I have pulled every socketed chip from the board and reseated it.  Tried a host of different things.  Now I'm looking for broken traces.