Chuck(G)
25k Member
I decided to haul out the old PowerMac 6100/60. And got nothing.
Okay, the PRAM battery was gone--replace it, but still no video--and no sound through the internal speaker. The system boots from the hard disk as far as I can tell, and it also boots from the Network Access 7.5.3 floppy.
But no video--a logic probe test on the DA15 end of the HD45 adapter says that there's no pin wiggling--just static high/low logic levels.
Just in case the thing misunderstood me, I removed the PRAM battery and powered it up, then replaced the battery. Same story (the battery measures 3.66V).
And no sound whatsoever from the speaker. Checking the continuity from the connector, the speaker's good.
PSU voltages are well within margins (+5.06 and +11.88 V).
Apple PowerPC boards are a mystery to me and I don't have any documentation that I can work from.
Any ideas from you more seasoned Performians?
Okay, the PRAM battery was gone--replace it, but still no video--and no sound through the internal speaker. The system boots from the hard disk as far as I can tell, and it also boots from the Network Access 7.5.3 floppy.
But no video--a logic probe test on the DA15 end of the HD45 adapter says that there's no pin wiggling--just static high/low logic levels.
Just in case the thing misunderstood me, I removed the PRAM battery and powered it up, then replaced the battery. Same story (the battery measures 3.66V).
And no sound whatsoever from the speaker. Checking the continuity from the connector, the speaker's good.
PSU voltages are well within margins (+5.06 and +11.88 V).
Apple PowerPC boards are a mystery to me and I don't have any documentation that I can work from.
Any ideas from you more seasoned Performians?