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  1. M

    68030 /BERR

    Hi, Would anyone know most common reason for /BERR to be asserted for LCIII 68030 CPU? Obviously no boot, no sound, no picture but there's life on the bus. /HALT /RESET are not asserted, I see on oscilloscope activity on ROM data pins as well as CPU/DRAM R/W pin. Without logic analyser no...
  2. M

    M1212 Monitor flyback transformer

    Hi All, Anyone knows where to buy a replacement for EHT for this monitor? There's no high voltage output (screen is not highlighted) and upon inspection EHT has white residue on it. Probably cracked/epoxy leaked somehow. Checked caps all are good, Measured HOT transistor, transformer seems...
  3. M

    Where to find 341S0851 (c) 1990 APPLE - LCIII boot issues

    Hello All, Anybody knows where to find this MCU which has Apple programming on it? I am working on a very tired board which suffered from battery damage etc. - no boot of course. Aside from all sorts of issues and a need to replace dead CPU (yup-it looks like) it probably has bad 341S0851 chip...
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