| Electronics > Repair |
| W&G sna-20/23 spectrum analyzer repair |
| << < (20/20) |
| alexturner:
Possibly, the schematics are available on the web. |
| alexturner:
I spent some time with it and found that the power supply to the YIG oscillator had a bad transistor, swapped and it came back to life. Lasted an entire day, and now it's giving me grief again. When it boots, it displays the preset band fine, then when the unit displays the "Calibration Active" message, the entire signal flies up such that the measurement base is on the 0db line and saturated noise above that. Does anyone know what "Calibration Active" does in the unit? I've re-loaded my calibration data and checked the internal calibration reference, which is fine. Logarithmizer seems fine too given I see the trace on boot. I've recorded a short video here incase you have any ideas - not sure where to look at this point https://youtube.com/shorts/tnBPF-xLFNI |
| dimitris2:
Hallo I have an W&G sna 23 series c and when i turn it on and everything seems to be ok at the end has the message i need the boot diskette Can you help me please? |
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