Progressive 3000/040

[matt3k]

Double check the motherboard settings for this card.  Not all accelerators use the same jumper settings.

Few days ago I bought an untested accelerator card -the PP&S 68040-3000. It doesn't work, the Amiga was showing black screen and the power diode was dimmed. Yesterday I spent some hours with this card trying to find what's wrong. Now I know there is something wrong with one of the PAL chips. When I pulled one of them out, Amiga started and booted system but was working with motherboard 68030 only. The 68040 was inactive. The accelerator has an ability to switch between 68040 or 68030 from motherboard by software. I think this broken PAL is responsible for switching between these two processors.
Is there any solution to make this PAL get back to work? I'm not an programmer nor electronics guy, but I can check the signals running from accelerator's board to the PAL socket. I mean I can check there are no broken paths or resistors or capacitors etc.

http://www.bigbookofamigahardware.co...ct.aspx?id=241

Please, help me somebody!!!