"Anthony J. Albert" wrote: > > Dear folks, > > Does anyone out there have a BocaModem model M1440E external modem? > The model number is listed on a sticker underneath the modem. The > front panel has the standard lights and "BocaModem 14.4Kbps V.32bis". > > I just had one of these given to me, but there's no wall cube to > provide power. There is no specification listed on the modem anywhere > as to what the input power should be, and while I was able to find and > download the manual on-line, it only mentions that there should be a > power supply in the box with the modem! I've even disassembled the > thing, looking for silk-screening on the PCB, but no luck there. > > Does anyone have one of these, and can you tell me what the thing wants > for input power? If you havta guess, it's prolly 12vdc; I've seen a few 9vdc. the thing is to figure out which is ground. You need a DMV, and crack the case; most of the solder that runs around the edge of the board will be the negative. try 9vdc, if it dont work, or works poorly, try 12vdc. You might see a diode inline with the power jack. take the polarity clue off of that. whatever flows.
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