LA120 ROM & new member intro

On Tue, Sep 22, 2015 at 9:29 PM, Paul Anderson <useddec at gmail.com> wrote: What is the part number of the dead power supply you gave up on? It's the H7864 (Astec aa12130) in the BA23 enclosure. It powered up a few times, but now only the switch light comes on. If I remember, it wouldn't power up with just the cpu board (or maybe just the cpu + memory), but with cpu, memory, disk controller + disks, it would power up. I was able to poke around in the 'boot menu' (enough to see that the machine and serial port worked), and the next morning it wouldn't power up. I checked for cold solder joints, and replaced one of the three line filter caps - the other two aren't the exploding type. I'm getting power out of the filter anyway and the rectifier is OK (voltage across the two caps). I don't know switching power supplies well enough to go poking around in there. What other DEC items do you have? The MicroPDP (KDF11-BJ, 128 kw memory) VAXstation 3100 (m48 sounds right) running OpenVMS (probably well expired by now) DECstation 5000/120 (+ 2x disk expansion) running Ultrix. As I recall, this was a DNS server at BBN. I thought I saved the original bits, but I see I was in the mucking about before I made the copy. DECsystem 5000/200 - which I've been able to do nothing with. I should haul it out and see if I've gotten any smarter since the last time I tried it. LA120 DECwriter III (cleaned and repainted, NOS ribbon and a box of paper) LA120 DECwriter III (dead; print head is jammed, and the 'LSI printer' IC is bad) PDP 8a/400 - 3x m8315 (one that ignores HALT, one that doesn't work, one that hopefully works 100%), 2x m8316 & m8317 & 8k core) PDP 11/34a + 2x RL01's - a winter project. All I've done is clean out the dust and whatnot. I'm pretty sure I'm missing the cable to connect the controller to the disks. Annoyingly, one of the keypad buttons is busted off, and previous 'repairs' (not mine!) screwed up the joint enough that I had to make a bridge to glue it back together. The membrane button below it now feels weird - no 'click'. I _really_ don't want to take this apart. Did that on the 8a, and it was a nightmare. Where are you located? Just north of Washington DC. Anyone else? b