greg@mips.COM (Greg Shippen) (10/21/89)
I am having problems with my MacPlus. It exhibits complete power failure to
both logic and sweep sections. I have traced the problem to a component in the
AC path on the video board. The device is an open circuit -- a distinct problem.
I believe the device is an MOV used for transient suppression. It is labelled
R39 and has the following lettering written on the component "CAL-R 2SS20".
Does somebody have a schematic of the video board? I would appreciate concrete
word on what this component is and what the specs are of the device.
BTW, the video board has the part number "630-0102-J". I'm not sure of the
first 3 digits as they are obscured, but I am certain of the last five. The
data code on the board is "86 40"
Any help would be appreciated. As usual, the Apple dealers disavow any knowledge
of Apple's schematics!
--
Gregory B. Shippen
MIPS Computer Systems, Inc. {ames,decwrl,pyramid}!mips!greg
928 Arques Ave. greg@mips.com
Sunnyvale, CA 94086 (408) 991-0441