FG502/Repairs: Difference between revisions

Latest revision as of 04:02, 27 September 2022

Helitrim potentiometers are prone to failure due to a cracking plastic axle.
Failed (Tantalum) electrolytic capacitors, especially on the output transistors.
FG502 repair report @ amplifier.cd (German)
FG502 repair report @ amplifier.cd (English Translation)
The Tektronix Function Generator Teardown - Paul Rako @ electronicdesign.com
For serial numbers below B050740, some FG502s may not shift Output Frequency 1000:1 with 10 V or less as specified. To correct this problem, change R125 from 10 kΩ to 9.41 kΩ.

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-* Helitrim potentiometers are prone to failure due to cracking plastic axle.
+* Helitrim potentiometers are prone to failure due to a cracking plastic axle.
-* (Tantalum) Electolytic capacitors, especially on the output transistors.
+* Failed (Tantalum) electrolytic capacitors, especially on the output transistors.
 * [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_500/Reparatur%20Tektronix%20FG502-1-com.pdf FG502 repair report @ amplifier.cd] (German)
 * [[Media:Repair FG502 English.pdf|FG502 repair report @ amplifier.cd (English Translation)]]
 * [https://www.electronicdesign.com/technologies/test-measurement/article/21137778/the-tektronix-function-generator-teardown The Tektronix Function Generator Teardown] - Paul Rako @ electronicdesign.com
-* For serial numbers below B050740, some FG502's may not shift Output Frequency 1000:1 with 10 V or less as specified. To correct this problem, change R125 from 10 kΩ to 9.41 kΩ.
+* For serial numbers below B050740, some FG502s may not shift Output Frequency 1000:1 with 10 V or less as specified. To correct this problem, change R125 from 10 kΩ to 9.41 kΩ.
+[[Category:Instrument repair reports]]