Question about VeriFone Omni 3700

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Verifone 3750 getting a blank screen

Several times within the last couple of days the screen on the machine goes blank. We have to unplug and replug the power cord. I've ck'd all connections for power & data. What is wrong?

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Posted on Oct 18, 2007

SOURCE: verifone omni 3750

To do those kinds of tasks on the Omni 3750, you need to put the terminal into "system mode". Since once in "system mode", you can not only erase the previous applications, but you can also erase the operating system, I do not want to post that information on the web for everyone to see. I would recommend that you contact a terminal repair shop and ask them to walk you through that process.
Do you have the capability to reload the operating system?

Posted on Jul 01, 2008

  • 6 Answers

SOURCE: Verifone Omni 3750, set up problem

Your processor should be able to essentially blow out the memory on the terminal. From their a dummy program can be loaded to finish wiping out any residual memory. Lastly, you will need to do a completely new core load with your actual file build. The process takes much longer than normal due to the multiple core loads but it is effective. If your processor is not familiar with this or is unable, I would be more than happy to take over your services but am unable to solicit on this site. So, feel free to email me with any questions you may have at CJepson@federal-financial.com. Hope this helps.

Posted on Aug 28, 2008

  • 1 Answer

SOURCE: verifone omni 3750

Use this Master Password from the manufacture #23378463

Posted on Mar 22, 2009

  • 14 Answers

SOURCE: how do i change the

It does not use ink, it used a thermo printer, need th thermo paper.

Posted on Sep 09, 2010

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Turn off and unplug the Verifone 3750. Wait for five seconds or so and then plug it back in. This will automatically reset the Verifone 3750 and it will reboot and restart.

Reset the shift. Resetting the shift is another reset option available for Omni. Press "Shift," then "#," followed by "1" to reset and change the shift.

Press "Shift," then "#," then "2" to stop a change and keep the shift on the current settings.
Below is your user/install manuals, it's all in there so download each copy for any time later.
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I have a verifone 3750 terminal when stated message on thescreen is " download needed no *go variable" 1alpha alpha 66831 do not work


Press the F2 and F4 keys at the same time and it will then prompt you for a password. Enter 1alpha alpha 66831.

This takes you to the programming screens where your processor enters in their platform settings to perform the software download for your account. Without a valid download from your processor, the terminal will remain a blank slate.

Hope that helps

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I need to change the gateway in my verifone omni 3750. How to put the period after the number? rathin


Hit the * make sure it says CREDIT/DEBIT and Commserver choose commserver. Hit the last purple key (reports) key. Then choose IP change it to static and fill in the blanks and when each field is done hit next.

To get the periods or dots. Hit 1 then the alpha key above number 2 to get the dot.

Call me if you still need help.

www.greenlightpayments.com ext 105

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Get in touch with a gift card company or you processor (as many have programs) they will set you up with a program and cards and put the program in the machine.

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Verifone Omni 3750, set up problem


Your processor should be able to essentially blow out the memory on the terminal. From their a dummy program can be loaded to finish wiping out any residual memory. Lastly, you will need to do a completely new core load with your actual file build. The process takes much longer than normal due to the multiple core loads but it is effective. If your processor is not familiar with this or is unable, I would be more than happy to take over your services but am unable to solicit on this site. So, feel free to email me with any questions you may have at CJepson@federal-financial.com. Hope this helps.

May 27, 2008 | VeriFone Omni 3700

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