Re: Keys c,v,n & m don't work when first pressed
Posted: Thu Sep 20, 2018 11:43 am
Simply plugging in a joystick while the power is on can do it. Amiga Bill did that to his own 1200 a year or two ago.
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Hmm... I'm usually pretty diligent about not doing that, but I guess it's possible.intric8 wrote:Simply plugging in a joystick while the power is on can do it. Amiga Bill did that to his own 1200 a year or two ago.
So your PSU is measuring 1 volt on the 12 volt line?The top left pin (+12v) was fluctuating close to +1v
The middle pin (-12v) was fluctuating around -2.2v
The bottom-right pin (+5v) was pretty steady at 3.3v
I doubt it's an issue with my multimeter; it's a pretty good one. I was measuring it direct from the connector (black on ground, and red on the other three pins alternately).Zippy Zapp wrote:So your PSU is measuring 1 volt on the 12 volt line?The top left pin (+12v) was fluctuating close to +1v
The middle pin (-12v) was fluctuating around -2.2v
The bottom-right pin (+5v) was pretty steady at 3.3v
Yeah there is for sure something wrong with either your PSU or your Multi-meter. Your Amiga should not function with 1 volt or I don't believe 3.3 volts either. Your PSU should be outputting at least 12 volts on the 12 volt line and at least 5 volts on the 5 volt pin. Possibly a bit higher if you are measuring it without any load.
Are you measuring those straight from the PSU connector or while your Amiga is turned on from the backside of the connector?