Subj : PhoneNET v2.0 [En] -NO ANSI-
To   : sPINOZa
From : rmurray
Date : Wed Aug 28 2024 11:38 am

 sP> Maybe some still owns a Smartlink 1414AV V.32Terbo modem and adapter :)
 sP> Anyway thanks for the "solution".
 sP> 

Yes, in any case, it completely fixed my problem. I find it really strange because when you look at the modem's circuit, it takes the 9V AC power, which in reality is 10.57V AC with the USR transformers. And on the modem's PCB, it immediately converts it to 5V DC. I don't know why they did that back in the day. They could have directly used a 5V DC transformer as the power supply, which would have simplified the modem's electronic circuit.

In your case, yes, it is quite possible to have a defective transformer. But for safety, if you can find the model number of the transformer originally supplied by the company, it will help you a lot. This Friday, I found several transformers, and I will need to place an order to standardize everything as it was back then.

Does anyone have the circuit diagram for the USR model 5686 modems? We should ask our PDF specialist; I'm sure he has it. And it's better to ask him before doing any research, otherwise, he will tell us that he already knew and had it...:)))

                VA2RFC BBS    Les M‚chins, Qu‚bec  Canada
       SysOp: rmurray  ---  Modem: 1(418)317-1343  ---  4 Lines 56 kbp/s
  Telnet: va2rfcbbs.photorm.net:23    FsxNet: 21:1/235    FidoNet: 1:229/114

--- Mystic BBS v1.12 A48 (Windows/64)
 * Origin: VA2RFC BBS (21:1/235)

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