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January 31, 2013
about 3 years ago
Taylor Iversen has forwarded my email to Techsupport for me already, but refund might be the way to go for now seeing as shipping costs to get the two boards replaced + the effort and time involved in waiting wont be worth it for a while……
Not happy, One board arrived totally dead and the other one only worked for a few hours with a small picaxe before going to, it seems the Boost converter has died internally and shorted, one got very hot as it died, load is under 10ma… except for a split second on powerup where a small cap on the power rail is charged for the purpose of power smoothing: 470uf. Power is controlled with one of the Polu Pushbutton electronic power switches which is fine….
Picaxe by itself uses 5ma and the LED uses 4ma.
im sure the IC has internally gone on the one that did work, when i plug a battery in i might get a quick blip of voltage if im lucky then the battery protection circuit on the cell itself trips basically right away, and on USB which measured at 5.03V the IC gets very toasty, as in instant burn to finger. had a look at the traces and components with a USB microscope and found absolutly nothing. Eitherway thats $60 down the drain and im Pi$$ed!
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