A2Aviator wrote:
Get any open frame switching power supply that is 40W or greater, (40 being close to the OEM one) that fits within the dimensions of the box. There was a thread on here about a replacement Vulcan power supply module, that will work. It's a fairly common off the shelf part. You need +5, +12, -5 and -12 DC. The one in the InnerDrive had no -5, they "floated" (literally) a regulator in midair inside the box and attached it to the -12 line.
Yup, that would have been me. The MeanWell (great name) PT-65B is what I used to restore a Vulcan GS. It should fit the stock IIGS power supply case without incident.
Available from Jameco Electronics for $29.95 + shipping.You will have to rig up a -5V regulator, but hopefully in a bit more robust manner than what Tony describes for the InnerDrive (that's sort of scary). I used a 7905T regulator - also available from Jameco for a couple of bucks. That drops the -12V rail to -5V and provides the fourth voltage.
The MeanWell is rated at 65W (72 with forced air cooling), which should be more than enough for even the most fully-loaded IIGS!
Stevep.s. - While it does nominally fit the Vulcan case, you end up having to unsolder a few components at the AC input end and reorient them (some on their side, one choke airborne) using some bus wire and skill. Very, very tight. This should not be a problem with the GS supply since it has more room.