Mark_W's latest activity
-
MMark_W replied to the thread Fix old Quantum drives.Just to add my 2 cents, I managed to fix a few conner and quantum drives with melted rubber bumper on the magnet, just wrap a few layers...
-
-
MMark_W replied to the thread Sound issue recapped SE/30.Have you tried the headphone output? Is the sound clear on both channels? If so the opamp that drives the internal speaker or the...
-
MMark_W replied to the thread Color Classic analog board re-design, needs community feedback..Should be easy to add a few extra pads and use jumper wires to reconfigure secondary winding connections to achieve 60V, 68V and 84V +B...
-
MMark_W replied to the thread Weird Classic Woes - RAM or Logic Board?.Try to remove the ram expansion board and boot with 1MB onboard ram only, then run a memory test with snooper, see if it reports any...
-
MMark_W replied to the thread Color Classic analog board re-design, needs community feedback..Good job. In your schematic you marked DL1 as BZX84-C8V2 which is a 8.2V zener diode. I also checked the schematic made by @jonschultz...
-
-
MMark_W replied to the thread Color Classic analog board re-design, needs community feedback..That's normal, unlike main power supply that has feedback control on the secondary, ctr power supply is regulated only on the primary...
-
MMark_W replied to the thread Color Classic analog board re-design, needs community feedback..If HOT is not shorted and CRT PSU does not enter protection mode after it tried to start initially, then the fault might not be in the...
-
-
MMark_W replied to the thread Mac SE - sad Mac.Did you check your ram sticks in another mac? Or put known good rams in it? Pretty sure it's a ram issue, I had an se showing the exact...
