Printer missing lines

SOURCE: printer not lining up and display doesn't work

You can adjust the display contrast by pressing and holding the MENU key for 10 to 20 seconds to modify the LCD contrast level.

SOURCE: Consistantly Intermittent Connection Problems

If you've tried installing the latest drivers and the problem persists it sounds like you have a lemon. The printers have a 2 yr warranty, so I would contact the retailer you purchased from and replace the printer. If your labels are jamming. Try the compatible File Labels available at LabelValue.com. They have both the Dymo 30327 and Dymo 30277 labels in a compatible version.

SOURCE: Dymo Twin Turbo Labelwriter not printing stamps

This is the response from dymo stamp. I did as they said and am now printing stamps again.
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We have seen this cause problems with the .NET framework Microsoft uses and Dymo Stamp uses. Follow these steps to correct it Step 1: Download Microsoft Windows Installer CleanUp Utility
============================================
1. Visit:
http://download.microsoft.com/download/E/9/D/E9D80355-7AB4-45B8-80E8-983A48D5E1BD/msicuu2.exe
2. Save the file on the Desktop.
3. Please double click the msicuu2.exe file to install it on the computer.
Step 2: Remove .NET Framework
========================
1. Click Start -> (All) Programs->Windows Installer Clean Up.
2. Please locate and remove Any .NET Framework 2.0 software.
After that, please perform the following suggestions to reinstall .NET
Framework 2.0 and its updates. Step 3: Reinstall .NET Framework Version 2.0 SP 1
================================================== ==============
Please download and install the following

Microsoft .NET Framework 2.0 Service Pack 1 (x86
http://download.microsoft.com/download/0/8/c/08c19fa4-4c4f-4ffb-9d6c-150906578c9e/NetFx20SP1_x86.exe
Note: When the "File Download" window appears, please click Save, and follow
the directions to save the file on the Desktop. After downloading all the
setup files, please double-click on each one to install them.

SOURCE: Twin Turbo pushing out a lot of unprinted labels

The people at Dymo's tech support (1-203-588-2500), told me that the problem is a dirty sensor. If you open the front face of the machine (the part with the words "Dymo Labelwriter Twin Turbo" on it), on the inside (top) you will see the black rollers and a peice that is on top of the roller that is the same color as the face you just removed. That peice can be lifted and underneath it you will see an orange transparent peice. This is the sensor. To clean it, you can either use the cleaner sheets that came with the printer or a business card. You will need to put enough alcohol to make the card damp (but not soaked) and run it through as if it were a label 10 times. This should clean your sensor so that it is able to clearly tell when to stop feeding.

It sounds complicated, but its really not. I hope this helps somebody!!!

SOURCE: OUR DYMO LABELWRITER TWIN TURBO JUST STOPPED PRINTING--

OK! The first time you tried to print ON THE LEFT SIDE, without anymore labels there, there was a "pending" error message in the print queue. This typically cuts off all furtther printing, as all subsequent requests are "behind" it in order or priority.

To fix this, open the Dymo Labelwriter "Printer" dialog box (double-click it on the tray or go to "start / control panel / printer and faxes" - then double-click on "DYMO LabelWriter Twin Turbo". Once open, you'll see a list of "failed" print requests. Somewhere in there you'll find the one with the "laserwriter output" out of paper message. Select that and cancel or delete it.

If this was the problem, all your attempts will now print (make sure you have enough postage paper in, and you'll have extras you can use, I'm sure!

Hope this helps.