Colin Wood wrote:
> recently, my SE/30 has decided to start doing something a little strange
> at boot.  when i first turn it on, it will come up with a bizarre
> checkered pattern (more grey than black&white), and it won't chime at all.
> i can hit the reboot button or power cycle the machine, but to no effect.
> however, if i let it sit powered-up for about 3-5 minutes, it will
> eventually chime and begin the boot process.

I once heard that this behavior is caused by poor contact of the ROM SIMM 
socket. Please try cleaning the ROM SIMM socket and re-inserting the ROM 
SIMM to it. Mine revived by this way. Hope this helps.

Takashi Hamada