Common fault analysis and maintenance methods of Tektronix oscilloscopes

Tektronix oscilloscopes are loved and used by engineers because of their complete functions, high work efficiency, comprehensive analysis functions and high cost performance. Although Tektronix oscilloscopes are of high quality, any instrument must be used with caution. A slight improper use may cause the instrument to "strike". Next, Antai Test will introduce to you the common faults and cause analysis of Tektronix oscilloscopes, as well as maintenance methods.

1. The screen does not display

Causes and repair methods of Tektronix oscilloscope not displaying:

Usually there are the following reasons: the fuse is broken, the high-voltage output line connection is unreliable, the signal line connection is abnormal; the power board is broken, the monitor is broken, etc. Parts can be replaced or reconnected for different reasons.

2. Display flower screen

Cause of fault and repair method: It may be caused by poor contact of the display circuit cable. Generally, it can be reinstalled or replaced firmly.

3. When pressing the button or turning the knob, it does not work, the adjustment is inconsistent, or the displayed number jumps back.

Causes of faults and maintenance methods of Tektronix oscilloscopes: Mainly caused by poor contact of buttons or knobs. The button circuit contacts need to be cleaned or cleaned or the internal contacts of the knob.

4. All knobs and buttons on the front panel do not work

Cause of failure and repair method: Check whether the connection cable to the motherboard is normal, or it may be caused by the circuit of the motherboard.

5. The self-test is normal after powering on, but the signal cannot be added to channel 1 or channel 2.

Cause of failure and repair method: Mostly, disconnect the input BNC connector from the motherboard and re-solder it.

6. The self-check is abnormal after powering on, indicating that the CH1 or CH2 acquisition board or main board is faulty, etc.

Causes of faults and methods of repairing Tektronix oscilloscopes: Tektronix digital oscilloscopes automatically run a self-test program after they are turned on. If there is a problem with something, there is usually a problem with this part, mainly on the motherboard. Sometimes power failure can also cause the self-test to fail. The most common fault on the motherboard is CH1 or CH2 acquisition detection failure, because in normal use, the input signal is input to the digital oscilloscope through the vertical channel. Once the allowable input voltage of the digital oscilloscope is exceeded, the analog input part of the motherboard will be burned out. and acquisition circuit. The input amplifier and data acquisition circuit are both integrated circuits. Unless the chip is severely burned out, the chip rarely breaks. Mainly check peripheral circuit components.

The oscilloscope is known as the "engineer's eye" because of its powerful functions. With the development of the times and technology, the tools used by electronic engineers are constantly updated, but we still have to make good use of the tools we use now. When a tool breaks, we shouldn't just want to throw it away, but fix it as much as possible to improve the efficiency of the tool.