Tektronix
Simbol Test Systems can help troubleshoot and repair many Tektronix products but this is not our speciality. If you have problems such as bad power supplies, trigger issues, keypad or display issues, don't hesitate to communicate with us to describe the problem and see if we feel this is a repair we could understake.
Tektronix is a very old test equipment company founded in 1945. Tek is famous for the invention of the oscilloscope in 1946. Today Tektronix manufactures many different pieces of equipment but is not present in the Optical Test Equipment space. Tektronix, just like Fluke and Keithley is now a subsidiary of Fortive.