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Original posted in June 2022 This is an update to my previous post documenting my restoration/repair of two Tektronix Type 114 Pulse Generators. As of this writing I have completed some cosmetic work on the cabinets, front panels and carrying handles of both units. This includes cleaning and painting the cases, cleaning the front panels, knobs,…
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Originally posted in November, 2016. I recently acquired two HP/Symmetricom Z3805A GPS Disciplined Oscillator receiver/clocks. These units seem to have several different configurations both inside the box and of the box itself, but all appear to have: Inside the box, I have seen reports of: The box itself can be Samsung rack mount or HP benchtop.…
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Welcome Welcome to my redesigned site documenting vintage electronics restoration, vacuum tube audio and radio repair, and the history of technology. Here I share hands‑on projects, repair walkthroughs, historical research, and high‑resolution photos from my bench. Relaunch note I’m rebuilding the site from the ground up to replace ageing, hard‑to‑maintain code with a cleaner, more…
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Originally posted in January 2017 I was lucky enough to obtain a Tektronix 202-2 Scope-Mobile Cart. Upon examining it, I found that the scope tray was loose and the tilt mechanism did not function properly. The cause for this was broken trunnion mounts on both sides of the cart as follows: Three of the four…
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Originally posted in February 2017 HP Z3200 Photo Printer Scan Axis Drive Belt Replacement: I recently had to replace the Scan Axis Drive Belt (otherwise known as the carriage belt) in my HP Z3200 Photo Printer. I use the printer several times per week, but the print volumes I do are relatively light, so the…
Shaun Merrigan
Classic Electronic Restoration, Vacuum Tube Audio, Technical History, Photography