My brother 2440c has no dialtone. I know the line is good and all else has been tested. Is there a place to get a modem board? Or is it going to be cheaper to just buy a new one...
I have looked on the web and the flat rate repair is higher than a new machine...
Have you had an electric storm or power failure? A power surge can cause no dial tone also. It can be the main PCB in the machine or NCU PCB(board for phone cord).
Unplug the machine from the wall, put your finger on the menu key first, plug the machine while holding the menu key, the light will flash and display will say maintenance. Press number 82, if there is a DF error the main board will need to replaced.
The main board is the brain of the machine and is one of the most expensive parts of the unit. It is hard to distinguish if it is the modem or the main board on this unit that is causing the unit not to have a dial tone. It may be better to take it to a service center.
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first, as a tech, i would make sure your phone jack works, then also make sure the line is plugged into the "line" jack on rear of fax. if those two steps are verified beyond a doubt, press your "hook" button and listen for dail tone. if none, pick up handset and listen. if you get tone on handset, then your speaker is disconnected. if you don't get a tone either way, then chances are you have a bad "NCU" board.
Unplug the phone line from the fax machine. Wait at least 1 minute then call the phone number that goes to the fax machine from another line such as a cell phone. Make sure you get a ring and not a busy signal. If you get a ring then hang up the phone. Plug in the fax machine again and call the fax number again. If you get a busy signal then either your phone if off the hook, the switch that is actuated when the phone is placed in the cradle is bad or your modem in the fax machine itself has gone bad. Another thing to try is unplug the fax machines power cord for 30 seconds then plug it back in. I have seen the modems get "locked up" and keep the phone line open. Unplugging will sometimes reset this and get it working again.
Good Luck and Thank You for using Fixya.
Remove the phone line from the back of the fax and connect a standard phone (not a business PABX or PAX system phone) to the line. Ensure dialtone is available. (Make sure in doing this that you are also testing the cable from the phone socket to the fax). If no dialtone, replace cable or fix line.
Check that the line is connected to the 'line' port on the fax, not the 'phone' port.
If still no dial tone, it may be modem fault (in the fax). Seek specialist attention.
If you have dial tone on the other phone. Plug the fax and make sure it is the line socket not the EXT socket otherwise you will have the same problem.
Other than that it is possible while the line was being worked there was a power surge on the line and it has caused the communications (modem, NCU) board to fail. In which case you will have to take it to a service agent.
it sounds like you may not have any dial tone. the hiss [white noise] you are hearing is from the dsl modem.try plugging a regular corded phone into the jack to check for dial tone.if there is none,call your phone company.also try plugging the fax machine into another jack where you know there is dial tone.