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TRS-80 Model III keyboard fix

so you are looking for a surface mount IDC connector to make a cable?
I have never seen those, I usually replace them as they did on later model 3 and model 4 Keyboards with a 90' angled 20pins male on the board, (as it is on the main board)
then use a female-female 20p IDC connector on the cable, that way you can disconnect the connector from the keyboard. Unless I am misunderstanding what cable you are replacing?

if you're replacing this connector
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then make it easier and make it become
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using a Male Pin Header Right Angle 90° Dual Row 2x10P 2x10 20P 2.54mm #110-20-38
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or

IDC type Cable Male Connector Box Header Right angle 90° pin, without eject levers #330-20 2x10 pins, 20 pins Part No. : LHR20GB1 2.54x2.54mm pin pitch
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then use a female connector on your IDC cable. as mentioned earlier so it's "removable" for future troubleshooting.
 
VERAULT said:
So one of my TRS-80 Model III's I got about 5 or so years ago came with a bad keyboard. It must have had trememdous weight on the keyboard which caused the pointed post below to just pierce the keyboard PCB. One of its previous owners attempted a repair with alot of wires. I have not dont a single thing to it.

I was hoping someone could show me a high reolution image of the keyboard so I can see the traces. once I get that I can remove all these large jumper wires and wire in some small wirewrap wire to fix the keyboard matrix.

Here are photos: View attachment 1237654
View attachment 1237655
View attachment 1237656
Click to expand...
Thank you, this saved me hours of work trying to map this out! worked like a charm, all keys are working again.
 
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