My VAX 4000-200 died....

Hi all, my first VAX ever - died, unfortunately. During the last months, I experienced that the CPU just got stuck at some time, but I could not reproduce this error. Sometimes, it froze during or directly after the initialisation procedure, or later on after half an hour or an hour of work with VMS. A friend of mine thought of instable voltages caused by the power supply, so I swapped it with another one in order to check, if the supply was to blame. But it wasn't the case. I took out all the boards and left the CPU and some memory only, but it didn't get any better. After getting stuck, the CPU could only be reset switching the supply off and on again. And now, since last week, the CPU doesn't come up at all anymore. After switching on the power supply, the seven segment display shows an "F", nothing is printed on the terminal, and the halt-button has no function anymore (which was always the case when it got stuck). So I guess that my VAX died... Needless to say that these boards can't be repaired. As far as I know, no schematics were ever published and these big chips on the board are horrible to unsolder and solder, even if spare ones could be obtained (supposed that one knows, where the "problem is"). Did anybody on this list make similar experiences regarding VAXen dying that way (at least, I'm pretty sure that she's dead) ? Is there anything else I could check in order to save my VAX ?

Regards, Pierre __________________________________________________________________________ Erweitern Sie FreeMail zu einem noch leistungsst?rkeren E-Mail-Postfach! Mehr Infos unter http://produkte.web.de/club/?mc=021131