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Old 04-11-2021, 03:00 AM
Electronic M's Avatar
Electronic M Electronic M is offline
M is for Memory
 
Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
Posts: 15,410
Acquired a former Zenith owned Conrac B&A monitor and Tectonic waveform monitor pair

So another member acquired a Zenith Radio corp owned Conrac CYB17 that I'm going to be repairing for them, and they let me know the person they bought it from had other ex-Zenith owned gear. That led to me purchasing this thing. The 9" CRT had a cataract that looked to be RCA style but was soft enough to cut with guitar string like a Zenith style cataract... either way it was probably the easiest cataract I've done where the entire face still had good adhesion. The monitor came up on the variac without issue thought one of the blue lytics looks quite leaky and was replaced. The other blue lytics also look bad but I don't have any spares so I'll have to order them with the CYB parts.
The Conrac had noticable burn in of SMPTE color bars(CRT looks weak buy I haven't tested it yet)...that and it's packaging with a video waveform monitor on the same shelf/bezel make me suspect this was originally part of a quadraplex VTR but I haven't found a model that looks like this would have been part of...
The waveform monitor was stone dead, but all that was wrong was a dirty power switch... Some of the controls are a pinch dirty but not terrible.
I need to figure out what to adjust the calibration square wave to for correct calibration.
The Conrac half is all SS except for the HV rect tube, and the Tektronix half has around 5-8 tubes and some transistors.
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File Type: jpg IMG_20210410_010923408.jpg (68.3 KB, 33 views)
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