68kMLA Classic Interface

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Does anyone have the pinout of the captive DB-15 video cable on the Radius Pivot model 0356?
Posted by: dankcomputing on 2025-04-22 19:18:31
E-waste crackheds strike again! Yes, it's another cut cord monitor. This one's very, very painful to disassemble but here's what's left of the monitor cord:
https://cdn.discordapp.com/attachments/1111352629646348399/1364397330782097468/IMG_2443.jpg?ex=68098588&is=68083408&hm=0459098e0fcf10f1ddf5cb7f957be77684b3cfc53a3975a850d926296dfe85fa&format=webp&width=539&height=719
The monitor consists of 4 PCBs inside: a shockingly tiny neckboard, a power supply board, a deflection/HV board, and an input board. The cable connects to the input board here, which has cables going every which way and is mounted just behind the neckboard on the monitor frame:
1745373310703.jpeg 1745373813992.jpeg
It's obscured in the photo but Red, Green, Blue, HSYNC, VSYNC and all of the grounds are marked on the P201 connector. What's not marked are the sense lines - the silkscreen just says SENSE for all 3. They could be SENSE 0, 1 and 2 but without an intact cable it's hard to know for sure. Where would CSYNC go? Would it be bridged to HSYNC or left unconnected? If so, it may be possible to tell without taking the entire monitor apart.
Posted by: adespoton on 2025-04-23 14:22:16
Slight tangent, but back in the day, a number of products that were big and heavy like CRTs had an interesting warranty system: instead of returning the entire thing, you'd cut the cord and send the cord back, and they'd ship you a new unit. The idea was that it cost too much to ship the entire thing in, and their cheapest solution to "fix" it was to send you a new one (cheaper than repairing the old one for them).

So I have to admit, more than once, I collected up the ones with the cut cords and re-wired them to get for free what I could never have afforded new. Usually the actual issue was easily repairable with a quick component replacement or reflow; sometimes, there didn't appear to be any actual issue (likely a software or computer issue and the owner just thought it was the display).

Unfortunately, I haven't done that sort of work in over 20 years so can't remember what goes where. At the time, I recall just mix and matching the SENSE lines until I got output that made sense.
Posted by: RepairManiac on 2025-05-01 09:33:42
I've scoured the Radius Dealer Resource CD I have and there is nothing on it for this cable's pinouts. As I recall, they didn't have printed manuals so unless whoever manufactured it for them happened to document it, then it probably not out there. I always liked that display and hope you get it going!!!

I've included the only two technical images they had on this CD pertaining to this model.
Good Luck!
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