Purchased Buffet r13 (serial # 555623) new, six months ago. Still under warranty. Since then have had technicians try to adjust mid b c key problems as well as others. R13 B660 is burned into the barrel. R13 B into the Bell. No mention of R13 on the upper or lower. Only #555623 is burnt on both. Is this really an R13 pro clarinet or is it a reject?

as it is new and still under warranty , take it to a service dealer or authorized service agent for warranty work
any work you do will void warranty

Inexpensive phone.... simply replace it with a new one. Should cost you less than $10, which will most certainly be less than any postage involved in returning it for repair.

take it back, its still under warranty. That means the key has a contact problem in the circuit. you have to take it all apart, clean it, check the contacts....probably lint. You can try vaccumming it and it might fix the problem. I bought one too and it wasnt good

Yes it can be fixed under warranty all you need to show the technician is the original reciept from Lowes

want to register my new tv for 6 months extra free warrenty, help

You are still in warrenty, go to Toshiba website and get to customer services. Also - as its under 3 months you could take it to where you purchased it from and they should sort it, dont let them tell you to go to the manufacturer as in the legal sense they have a duty to you as you purchased from them and it's been under 3 months.
DONT open it up or let any technician open it up while its in warrenty, that will void the warrenty.

If you purchased this machine NEW 6 months ago, everything on it is under warranty. You should contact the selling dealer to verify you are entitled to a free service call. Changing the filter is routine maintenance and in no way should affect the warranty.

The possible CAUSES of the problem you describe are NUMEROUS!.. You may have what the industry calls a 'LEMON.' There is a LEMON law in every state. Sinse it's a 2009 model, keep at them (dealership). Warranty procedures APPLY! You may not like it, but you are covered under WARRANTY!.. I'm sorry, but under the warranty agreements between Hyundai Motor America and the Dealerships, you are relegated to KEEP AT them.The most difficult problems/malfunctions to diagnose are those which DON'T STAY BROKEN! Tell you what, since you posted your problem here, you'll have to do some homework yourself (become a Hyundai Certified Technician).. then you'll see how DIFFICULT the diagnosis can be. Walk a mile in the technician's shoes! Sometimes the problem can simply be a resistive/poor ground
circuit, OR, could be potentially a multitude of different problems. Take/tow the vehicle into a Hyundai Service Center (dealership), Insist they find out what the problem is!... Then you'll have the option of having them buy it back under the "Lemon Law.'

Call a technician from the place you purchased it. It should still be under warranty. If not by them, then I would try the manufacturer. Warranty Job

Not sure what you mean as barrel, Is the line present when receiving fax's/printing reports or just when doing a copy? Does it only do it when using doc feeder, if it is only 6months old then is under warranty