I'm restoring some pre-TTL DEC stuff (R and W series logic) and I need a handful of front panel bulbs. Unlike the later bulbs with a plastic base and strong wires to solder to the PCB or to plug into socket pins, these are like a kernel of corn, with two fine wires coming out of the glass envelope at a slight angle with no supports of any kind. Some of the bulbs have burned-out filiaments. Many of the ones I need to replace have broken wires externally. I am going to attempt to solder new wires to the stub, but I don't expect the attempt to be an overwhelming success. I might try a harder solder so that when I put them back in the frontpanel PCB, they won't give way when I put enough heat on the other end to install them. About all I know about these bulbs is that they are fed a nominal 12VDC from the W-series driver boards. The front panel itself is literally just a PCB and a bunch of bulbs; no active circuits (unlike, say, the front panel of a PDP-8/L). Testing should be easy - feed 12VDC at a few mA to each set of fingers and check the bulbs, one by one. If DEC was underfeeding these bulbs to extend their life, I would expect that the bulb should be rated at 14V-16V. I measured slightly over 12VDC in circuit, but well within a 5% tolerance. I have checked the online manuals I could find, but no mention is made of the nature of the bulbs for 1966/1967-era DEC equipment. Any ideas? -ethan __________________________________________________ Do You Yahoo!? Great stuff seeking new owners in Yahoo! Auctions! http://auctions.yahoo.com