Reply 140 of 198, by doogie
Thanks! I'm excited to be back on track with this build.
Capacitor Shopping List
Next-level OR840 badassery (namely, stable operation with up to 2GB RAM) can be achieved through a derivative of this parts list. My mission was to try to extend the life of this board as long as possible, and exceed the ESR/ripple rating for the components that were originally installed.
- Nichicon RR50J821MDN1 6.3V 820uF, qty 12, replaces Sanyo OSCON 4SP820M
- United Chemi-Con APSC100ELL391MHB5S 10V 390uF, qty 4, replaces Sanyo OSCON 10SP270M (see note)
- United Chemi-Con APSG200ELL121MF05S 20V 120uF, qty 1, replaces electrolytic at grid H6
- Nichicon RNS1D220MDS1 20V 22uF, qty 1, replaces electrolytic at grid J9
The surface-mount caps in the audio circuit were well within tolerance and not replaced. Same story for the array of tantalums.
Note: the 8mm diameter OSCONs seem to differ between board revisions - you'll see 470uF caps on other boards. 10V/390uF as an upgrade over the original 10V/270uF units seems to be fine on my early rev board.
Configuring SCSI devices..just like riding a bike, right? Seemingly I haven't forgotten how to get drives to play nicely with one another. I did always really like the Adaptec cards.
On channel A/50-pin:
- dual Plextor PX-W124TSi
- Plextor PX-40TSi
On channel B/68-pin Ultra160:
- dual Seagate ST318451LW 18GB 15K screamers
..the Dream Machine called for a 75GB deathstar on the IDE bus, which I somehow have a still-working example. I do want to add a larger capacity drive - I'm thinking perhaps just piling onto the SCSI card with a monster 300GB disk.