On Tue, 4 Jun 2002, Dwight K. Elvey wrote: This is excellent advice; however, it assumes a certain inventory of skills/equipment on the part of the Owner. Barring Sellam's learning a lot of obsolete elctronic lore and basic tube theory, and then dredging the chassis out of the pedestal and going thru the wiring and voltages - what he asked for (and what is the needed info in this case) is: ^^^^^^^^^^^^^^^^^ * What is the tube layout for the 026 Printing Punch electronic chassis? * One tube is missing; the rest are 25L6s (IBM Badged, no less!) and we have no 'docatall' for the rig. Therefore, anyone with the correct tube layout info is encouraged to post it here so that Sellam may fill the 8-pinned, stem-keyed, lonely socket where once a Happy Tube lived and worked. The electronic symptom is (for those familiar with the circuit): The majority of the keys, when depressed, do not seem to perform any functions, and do not release afterward (they stay depressed). Depressing the Master Clear under the Read Station clears the machine and releases the keys. The REL key and (IIRC) the SKIP key do their thing - nothing else. When prodded manually, the machine feeds cards, and has, from time to time, tried to DUP punch, but it's severly autistic in it's current state of repair. I recall the missing tubels position as being the lower row of tubes, far left one, when veiwing the chassis in it's normally-installed position. That's all I could glean from a pleasant Sunday morning of minor disassembly, cleaning, oiling, and general TLC. It sat in a garage for several years, and gathered much dust. Now, it cries out for life! Life! Life after Scrap! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Minor correction For The Record: I punched my share of cards on various 026s, got in trouble in high school for getting caught by the Math Dept Head with the covers all off one of the ones we had there (investigating it's beautiful complexity, nothing more..), used shopping bags full of chads for illicit confetti, but I never actually made my living keeping 'em punching. Roads not taken... ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -> Note required information. Bottom left-most tube, IIRC. <- Cheers John