On 10/17/2017 04:56 AM, Dominique Carlier via cctalk wrote: > Hi guys! > > Nobody here has any information to help me to solve my problem? > Do you think I should talk about this breakdown on another forum? If > yes, have you an address to recommend me? >
Dominique, the probably reason that many of us don't jump in is that you've got a tough job, given the house-numbered ICs and lack of visible traces. If this were my system and I was determined to get it working, I'd probably start by dumping and disassembling the ROMs to find out exactly what set of program steps occur to produce the error message. I'd probably then write a diagnostic ROM that would allow me to probe in detail to characterize the fault. The happy circumstance is that the display (and possibly the keyboard) is functional.) Then I'd jump in with a logic analyzer or ICE to determine the exact nature of the failure and its source. You can see that this is an arduous process that few are equipped to help you diagnose remotely. My two cents' worth, Chuck
