Posted By
JamesC
on 2017-11-01
11:18:09
|  Re: Commodore 16 and 'Device Not present' error :-(
You wouldn't apply 5V to all pins at the same time!  5V to the connector's pin 1, test for 5V on the opposite side of pin 1's diode, then move on to pin 2.
If your meter can supply and measure a lower voltage, feel free to do that lower voltage. But the entire C16 operates on 9V DC, so there's no harm if the 5V you apply for testing would "slip past" and encounter another component, such as the CPU.
Also, test the power supply itself -- the specs are on the case, but you need 9V DC coming out. If you get significantly less, your C16 can go very wonky indeed. 
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