Chyron 4046 (Super Scribe) Keyboard, Xwhatsit USB

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OldIsNew

20 Oct 2019, 05:08

I love big old boards, and this qualifies. It's a sibling of the Chyron 4044 as reviewed by Chyros. The 4044 has three additional keys to the left of the alphas. The PCB in this board has the pads and traces and the PCB frame has openings for these keys, but alas, the front of the case does not. It's vintage KeyTronic F&F, which I actually really like (unlike the more recent short stem version).

orig_SM.jpg
orig_SM.jpg (201.8 KiB) Viewed 950 times
back_SM.jpg
back_SM.jpg (263.56 KiB) Viewed 950 times
rear_SM.jpg
rear_SM.jpg (500.85 KiB) Viewed 950 times
rear_label_SM.jpg
rear_label_SM.jpg (155.54 KiB) Viewed 950 times


Opened it up:

open1_SM.jpg
open1_SM.jpg (282.2 KiB) Viewed 950 times
kb_module_SM.jpg
kb_module_SM.jpg (304.94 KiB) Viewed 950 times
caps_off_SM.jpg
caps_off_SM.jpg (346.75 KiB) Viewed 950 times



PCB:

PCB_front_SM.jpg
PCB_front_SM.jpg (412.6 KiB) Viewed 950 times
PCB_back_SM.jpg
PCB_back_SM.jpg (454.35 KiB) Viewed 950 times


It appears to be dated 7/28/88
label1_sm.jpg
label1_sm.jpg (80.19 KiB) Viewed 950 times



The foil mostly looked OK, but the foam was, as typical, all degraded:
origfoil_SM.jpg
origfoil_SM.jpg (243.48 KiB) Viewed 950 times
oldfoam_SM.jpg
oldfoam_SM.jpg (322.77 KiB) Viewed 950 times

Replaced the F&F:
newfoam1_SM.jpg
newfoam1_SM.jpg (315.7 KiB) Viewed 950 times
newfoil_SM.jpg
newfoil_SM.jpg (303.7 KiB) Viewed 950 times



Traced out the rows and columns. It's an 8x16 matrix.
IC_labeled.jpg
IC_labeled.jpg (340 KiB) Viewed 950 times



Then wired up the Xwhatsit Model F:
Xwhatsit_SM.jpg
Xwhatsit_SM.jpg (400.69 KiB) Viewed 950 times


Closed it up and good to go:
final_front_SM.jpg
final_front_SM.jpg (262.69 KiB) Viewed 950 times
final_side_SM.jpg
final_side_SM.jpg (166.12 KiB) Viewed 950 times


Short video of typing on keyboard:


Last edited by OldIsNew on 21 Oct 2019, 02:50, edited 1 time in total.

User avatar
User101

20 Oct 2019, 07:12

What a cool keyboard and I like those switches too. Would love to use one as daily but my table is too small for this monstrosity lol

John Doe

20 Oct 2019, 15:19

Sharing the interest of having big keyboard, glad to see another 4044 appeared.

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Sangdrax

21 Oct 2019, 04:59

Now that's how it's done. I got another keytronic in recently I need to give the same treatment to. :D

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