Question about VeriFone Omni 3700

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Omni 3750 with paper dust under display window

We have several Omni 3750 terminals that have paper dust under the display window. Is there an easy way to take this window off and clean it ourselves without sending them off?

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Unfortunately, no. Unless you're willing to risk breaking the display lense on the Omni terminals you can try and pry-off the display lense very carefully starting at the leftside edge of the display lense and slowly lift off the lense. By doing this, you'll need to let the double-sided sticky tape used to apply the lense lift off the case/housing. In most cases it would be wise to send in the terminals for general cleaning/maintenance. I can do these for you cheaply.

Posted on Aug 06, 2009

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1 Answer

I have an Omni 3750 that I bought from a provider. I have since switched providers and now my Omni 3750 reads "download needed no *go variable". My previous provider gave me several passwords...


Here's Some that you can Try: 1, 0000, 1234, 1701, 1739, 000000, 12345, 998877, 123456, 752036, 23378463, 45803155, 53664337, 1[Alpha][Alpha]66831, 6[Alpha]78727[Alpha][Alpha], Hope this help if not call us @ 775- 358-2922 : - )

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You either have bad paper or you printer head is going out. Firs, replace the paper. Thermal paper goes bad over time.

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The print out is so light that it's very hard to read on my Omni 3750


Could be old paper
Could be the printer head is going bad
Could be the paper cover is not pushing the paper firmly against th paper roll, Put a rubber band around the paper cover and see if that helps

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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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Make sure you are using thermal paper and it is feeding from the bottom of the roll. If not press down on the lid when the paper is printing sometmes the tension springs were defective.

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it needs to reprogram the machine

erase all of Memory and cache
ask your processing company, build NEW terminal file
and install fresh one.

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Our verifone omni 3750 credit card terminal started making a beeping sound and would not accept input. Sometimes you can unplug it and then it will work fine or you can press many different keys at the...


Depending on the type of business you are, the terminal can get pretty dirty on the inside and not look it on the outside. I had a florist contact me about similar issues with his terminal and after a good cleaning of the contact points under the pin pad the Omni worked fine.
Good luck

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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.

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Verifone omni 3750


Use this Master Password from the manufacture #23378463

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