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From: peter@easthope.ca
Newsgroups: sci.electronics.repair
Subject: Booting a PowerWave 604|132.
Date: 28 Dec 2024 21:41:21 -0700
Organization: A noiseless patient Spider
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Hi,

I have a Macintosh clone PowerWave 604|132.  The user's manual is 
available from the Internet Archive and other servers.

The power button on the front panel and the button on the keyboard 
both cause the fan in the power supply to spin and the LED in the 
front to illuminate. The display remains black.

I've tried two monitors and a second PCI video card.  The display 
remains black in all cases.  
 
Neither the programmer's interrupt button nor reset button has 
effect.  Meaning the Apple ROM  isn't working?  The CPU isn't working?
 
Should an audible tone come from the speaker when the machine 
starts?

One memory card is in each of two banks of sockets.  Removing either 
card yields no change.

The clock battery is probably dead but shouldn't cause this 
behaviour; correct?

Adjacent to the memory are ROM and cache SSIMMs in sockets.  
Reseating is worth trying but the cards are stuck hard in the sockets.

Other ideas?  Poke around with an oscilloscope?

Thanks,                  ... P.