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Breakout boards / FT2232 free PCB - not working, help requested
I have very little electronics troubleshooting experience, so I'm humbly asking for assistance. I verified that I'm getting +5v through the USB port by stabbing the backside of the connector with the voltmeter probes until I found two that read +5. I'm seeing 1.37v across the power LED, by playing with a power supply and another LED I found that it didn't light until it got 1.5 or so.
The LDO power supply confuses me. If I look at the datasheet (can't post url as a new user) it looks like pin 2 (center) is the ground and pin 1 should be the input voltage, but if I probe across those I get -1.17v; to see 5v I have to go pin 3 for + and pin 1 for -. What I put on there was Digikey PN IFX25001ME; did I get the wrong regulator?
Otherwise - can you point me in the right direction for troubleshooting? Other possibilities that come to mind is that I overheated something (the hot air seems to have discolored the two 4.7uF caps) or something's shorting, but I'd expect to see no voltage in that case.