My 54620C logic analyzer refused to start up after 20+ years of storage, with a suspiciously bulging M48Z08 zero-power RAM.
?
So I bit the bullet and removed the 48Z08, any data therein would be lost years ago anyway.
Lo and behold: the thing boots without any RAM, letting me know that the checksum failed and defaults were loaded instead. And being very unoperable after that: no trace, no menu, no nothing, just a rudimentary screen with a few divider lines...
Although not operable, this does tell me that there is no critical calibration data in there; please correct me if I'm mistaken here (and provide a solution).
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I'm currently in the process of freeing the 48Z08 from its hat to see if there is a hack to be done with stuff from the junkbox.
Unfortunately, in an (ongoing) cleaning spree I just recently sold off all my SRAM chips: Murphy strikes again...
?
I see many adapter and conversion solutions, even new M48Z08 chips, but all too expensive to my taste.
Maybe someone can point me to an inexpensive ($10 max) plug-in solution...
