Recent content by clh333

Greetings all, In addition to SE Mac variants and a Quadra 650 I have a G3 beige desktop machine that I know little about: It has the 300MHz CPU, 760 MB memory, ATI video card, CDR, ATAPI ZIP drive and a 9+ GB HD. I believe the "personality" card is the "wings" variant; it has RCA and S-Video...

The ROMINATOR II uses a flash-RAM - based image to boot, and so is using different logic-board circuitry than the floppy disks would.  The fact that the machine boots from the RAM disk and not the floppies - especially given that you have substituted drives and cables - strongly suggests a...

Thank you for your post and the tip about G 600056.   I too have acquired the 68851 and will be adding it to the Prodigy board.  I have already added the Prodigy utility software and accessed their control panel.  I have not attempted to use the Connectix software since I believe -from what I...

Thank you for the reference.  I got right on it. -CH-

Later this morning I consulted the other Pina reference, Mac Classic & SE Repair and Upgrade Secrets which covers the same symptom but in greater depth, pp 52-57.  Here he states that for the diodes CR2, CR3 and CR5 acceptable in circuit readings are in the range of 0 to 50 Ohms and bad...

Thank you, Johnnya101, for your reply. " Could you have nicked it and unsealed it? Pretty sure those are the symptoms. "  Meaning nicked the CRT while re-inserting the flyback lead?  It's possible, but I thought the CRT implodes if the tube is breached. I checked both CR2 and CR3; each...

Working on a Mac SE (same as was referenced in PSU issue post earlier).  After substituting a known-good PSU I assembled the computer and powered on, with the back shell removed for observation.  Observed the following:  No chime, black screen and a hissing, crackling sound.  Immediately shut...

Thank you for the offer.  Let's see if anyone else has any ideas.  I'd really love to find that Sony chip or a replacement.  Better yet I'd love to find out why the voltages are so far off. Thanks for your reply, -CH-

Been reading  http://www.ccadams.org/se/classicmac2.pdf and also Pina's books for info on repairing Mac SE power supplies.  I have a Sony CR44 that tests the -12VDC lead as -8.5, +5VDC as 5.3 (both lines) and +12VDC as 13.5 and 14.2 respectively.  I have already recapped the PSU and am...

I swapped the HD for one that had been initialized with OS 6.0.8.  The machine booted to the Prodigy board and ran - faster, but stably.  The System Index produced by the diagnostic utility says the board is 3.5 times the speed of a standard SE. Unfortunately there isn't a lot of RAM for other...

Thank you for your suggestions.  Yesterday I added the board to the SE logic board and fitted the sandwich back into the chassis.  I was a little apprehensive as the Prodigy board, even with standoffs, sits right on the SIMMs and the other end is dangerously close to both the toroids and the...

I've used both and been grateful for their help.  When I dug out the board I found the manual and an installation guide with it in the foil bag.  The manual made mention of the software and my first thought was that I needed to find it somewhere.  I checked the Garden and then the MR, where I...

Thank you for your reply.  A copy of the software and user guide are now on Macintosh Repository.  Presently I will add the board to the SE I just finished updating and see what happens. -CH-

About a year ago I bought - on eBay - a Prodigy SE accelerator board, which I intended to plug into the processor expansion slot on my SE which has a SuperDrive.  Not knowing much about compact Macs or anything about the board, I put it in a drawer for safekeeping until I was ready.  Recently I...

From MacGUI I found an image of 7.1 as a set of 1.4 Mb disks.  I created Installer1 on a DSHD 3.5 floppy with a G3 desktop and tried booting the SE/30 with that disk, to the same result.  I verified the disk's viability by using it to boot another SE that had a superdrive and also verified my OS...