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buckshot23
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USA		Posted - 12/8/2001 9:11:13 AM  Show Profile  Email Poster  Edit Message
I am running windows xp I have the 56k 701 serial faxmodem. I connected it to com1 port with a RS-232c Cable. The modem lights up when I scan for hardware changes but it does not find anything. Also I am using a generic universal power supply set to 9V and 500 mA. The modem powers up fine but could there be interference with the power supply screwing things up.
pauldog
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USA		Posted - 12/8/2001 10:36:31 AM  Show Profile  Email Poster  Edit Message  pauldogs Homepage
My USR power supply is AC (not DC), and says "9v, 1000mA" so your 500mA may be underpowered.

What I'm more afraid of is that your generic power supply is DC and you've damaged the modem.

Bob Starnes
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USA		Posted - 12/8/2001 12:20:38 PM  Show Profile  Email Poster  Edit Message
I don't think that the 9VDC will hurt the modem but the USR external modem does require a AC power supply. Might verify the model number of the modem and check to see if you can find the specs on the modem to see what the correct power requirements are.
pauldog
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USA		Posted - 12/9/2001 11:22:25 AM  Show Profile  Email Poster  Edit Message  pauldogs Homepage
And unfortunately, the power requirements are probably not posted on the modem itself.

I have a "Model 0701" 33.6 faxmodem sitting here (ID 000839-09), and it runs on 9v AC 1000mA.

Bob Starnes
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USA		Posted - 12/9/2001 2:00:57 PM  Show Profile  Email Poster  Edit Message
Saw the power supply listing on USR's site one time but failed to bookmark it, haven't found it again since. There was a post on comp.dcom.modems at one time listing all the Sportster models:

USR Part Number: Voltage: Model Number(s)

1.015.090-B: (Input 120VAC, 60Hz) (Output: 9.2 vac@533mA):
00021800 00021900 00026100 00026400
00026500 00026501 00026502 00026600
00026601 00026700 00026701 00026702
00026800 00026801 00026802 00026805
00026806 00026900 00026901 00026902
00026905 00027800 00092200

1.015.1202-B: (Input 120VAC, 60Hz) (Output: 20vac @750mA):
00027900 00074500 00074600 00074700
00074800 00083900 00083901 00083902
00084100 00114100 00117200 00126500
00126501 00126502

1.015.1286: (Input 120VAC, 60Hz, 16Watts) (Output 9VAC, 1000mA):
00083903 00083905 00083907 00083908
00083909 00084000 00084001 00084002
00084003 00084004 00084005 00126502
00126504 00126505 00178400 00178600
00178602 00178900 00178902 00564100
00568400 00568600 00568602 00568603
00568900 00568902 00568903

1.015.1443-00: (Input: 120v AC, 60 Hz, 21 watts) (Output: 9 volts AC, 1500
mA):
00560500

buckshot23
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USA		Posted - 12/9/2001 6:59:45 PM  Show Profile  Email Poster  Edit Message
thanks guys I think the power supply is the problem but I don't know where to get a replacement. I tried radioshack but I think they had DC adapters also. Thanks for the quick replies
Bob Starnes
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USA		Posted - 12/9/2001 7:54:07 PM  Show Profile  Email Poster  Edit Message
Radio Shack does have some that are AC:

Cat No. 273-1630 - 9VAC/780mA
Cat No. 273-1610 - 13VAC/800mA

They've also got some for Nintendo game consoles, these are usually 9VAC/1000mA

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