VAXstation 4000/90

I think the key here might be the switch on the front panel that puts it into the alternate console mode. I've also read that the dead battery in the Dallas chip can cause trouble, however, mine has a dead battery and seems to start fine. It just looses it's settings every time I leave it powered off. -----Original Message----- From: Holm Tiffe Sent: Sunday, July 28, 2013 12:37 AM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: VAXstation 4000/90 Daniel Soderstrom wrote: I'm also have an 4000/90 and besides of the cabling to the console Port you can run into a problem with an empty lithium Battery inside that Dallas DS12xxx Chip on the mainboard. The machine is simply not starting at all if the battry is empty. You can try to get a new Dallas NVRAM Chip but it isn't unlikely that the cell in the new one is empry also. I've machines away some of the Epxoy from the chip to get access to the old battery and soldered nad glued a socket for a CR2032 to the chip housing, works flawlessly. Here is a site with pictures how it should look like: http://www.automatenarchiv.de/wartung14.htm This is not my site. Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741