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<TITLE>Why you should never tech on too little sleep...</TITLE>
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The PCB design is completed the my VCO and I've been very careful checking the art to the schematic and in so doing, found a part I forgot to document of the the schematic on the cross fader. So I become totally paranoid and I decided it would be best to buzz the prototype out against the schematic (and PCB) in that section, right?<BR>
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OK, so I'm buzzing out it out and something very odd is going on that's driving me crazy...I've got a pull down that's reading ground at both sides, but when I look, its not connected to the second side that I can see. Weird. OK, so it's another part it's connected to that doing it and leading from that pulldown is a 10K across an op amp, and THAT's also shorted to ground (yet miond you the circuit is working and with these conditions, it shouldn't be). I couldn't figure it out I looked at both sides of the board a trillion times, I can't see it. I started cleaning flux off like mad thinking it could have caused a short on my vector board, and it does nothing. Then I notice that when I buzz from +V to those nodes, they are also shorted (YACK!) - BUT, when I buzzed directly from +V to ground, no short.<BR>
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So, I'm going insane, right?<BR>
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I changed the batteries in my beeper. No diff.<BR>
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Have you all figured out what I was doing wrong yet?<BR>
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Yes Kids, I HAD THE POWER ON THE BOARD. ANd during this process I was poking around with a hot iron checking for shorts. Luckily, everything still works. I'd say I'm fortunate. <BR>
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GOOO TOOOOO SLEEEEEEEEEEEP.<BR>
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- P</TT>
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