Recent content by tk3000

I did not know about usrobotics shipping modems with the wrong power adapters. Anyhow, I did contact them few days ago; but did not hear back from them until today. Today, I got a response from them: " Thank you for choosing USRobotics. The USR325686E uses a 9V AC 1A power adapter. I hope this...

As your probably imagine, before posting in this forum I tried to contact usrobotics in order to obtain the power specs for the modem. Haven't heard from them in a few days, so I assumed that they would not response (not many companies provide support for ancient hardware). To my surprise...

Hardware wise, I am using the proper cables (tried two different straight-through serial cables) and tried a native serial port and a usb-rs232 bridge converter (prolific 2303GS). Also, tried two different computers with the same results. It would be too little luck for both cables and both...

9Volts sounds reasonable for those type of devices. But, to my knowledge, I don't have any wall wart that output AC; all the ones I have output DC given that electronic devices pretty much always use DC due to its nature.

Yeah, I have some variable dc power supplies that are relatively new and in good working order. I have tried 9VDC and 12VDC to no avail. The modem powers on, leds lights up when I try to communicate with the modem via a terminal program via serial interface; but there is no response. The only...

Thanks for the pics! Since mine may use AC as well and AC is given as a RMS value - which then is numerically roughly equivalent the DC value - I am assuming that a slightly lower or equivalent DC voltage is not likely to cause any damage or faulty operation. I was trying it with 9VDC and the...

Hello Folks, Amongst the vintage computer hardware, parts, and accessories that are in my inventory is a couple of old analogue external modems using rs232 port (db9). I would like to test them, but I don't have their respective power supplies. USRobotics seemed to treat their power supplies...

It seems that this motherboard is shot. Once it was properly reassembled (board with the proper heatsink back bracket, etc), did most basic tests eliminating all possible points of failure or faultness to no avail. To make things worse, I purchased mine at aliexpress; so it came straight from...

My venerable and old laptop (Toshiba Satellite P75-A7200 equipped with an i7-4700MQ, circa 2014) and previously a powerful machine during its heyday is no more. Have been using it for many years, but about 3 months ago it went kaputt for no apparent reason (left it on overnight [normally it...