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Questions tagged [printed-circuit-board]

All about PCBs: repairing, making replicas, troubleshooting, drawing & original documentation, etc.

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29
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2answers
3k views

What is the Commodore 64C "France version" and why does it need a beefy resistor?

While perusing the schematics for the Commodore 64C (titled COMMODORE-64 B/NE) I came across a suspicious section of the power supply: The unregulated "9V" is connected to the completely ...
6
votes
1answer
1k views

What was the first computer board to be wave-soldered?

The Wikipedia article on wave soldering does not give any information on its history. What was the first computer circuit board to use this process? I am specifically looking for computers that were ...
3
votes
2answers
485 views

How did wave soldering work? [closed]

While it is not used as much nowadays, wave soldering was a big advance in the productivity of manufacturing electronics, compared to soldering all the components by hand. It consists of placing all ...
1
vote
1answer
157 views

Need help with lifted pads/traces on a TRS-80 Model 100 PCB

The worst imaginable thing you can think of happened. I've tried making a minor repair and it all rolled downhill like a snowball and now I have significant damage. Extent of Damage The pads got ...