Sun Microsystems Hardware

	Sun 511 SCSI Shoebox Rebuilding and using an empty Sun 511 SCSI shoebox enclosure. This shoebox came up on a mailing list with no drives, and ended up being quite a bit of work!
	Sun 19 Inch ECL Monitor Cleanup After searching for quite some time, I finally acquired a Sun 19 inch ECL monitor! This monitor arrived working, but did require cleanup and repair before serious use.
	SPARCstation 2 and IPX RAM Upgrade SPARCstation 2 and IPX systems are closely related, and max out at 64 MB RAM on the motherboard. There exists a somewhat rare RAM upgrade, in SBus card form-factor, which allows these two machines to be expanded to 128 MB!
	Sun 3/50 System with Upgrades The Sun 3/50 was Sun's lowest-end Sun-3 offering. These limited systems were intended to be (relatively) cheap diskless workstations in environments like computer labs.
	GW-48T02-1, a Module for Rebuilding the 48T02 RTC/NVRAM With a large number of vintage Sun machines in the shop, I was stuck with having to repair or replace dead batteries in the 48T02 RTC/NVRAM modules used on many early SPARC systems. Modern replacements are not 100% compatible, so the old modules have to be repaired. There are clearance issues in some Sun systems, so gluing a coin cell holder onto the old module was not an option. I decided to lay out a small PC board to completely replace the "CAPHAT" section of the 48T02.
	Repairing Sun SPARCstation IPC Power Supplies A recent equipment pick-up included many Sun "lunchbox" form factor computers, including two SPARCstation IPCs. Both of the IPCs had dead power supplies, a result of failed capacitors. After recapping, they functioned perfectly. We'll cover which capacitors are valid replacements, clean-up, et c.