About Capacitor Replacement
Thank you Jestine Yong for your repair articles. I have used parts of some of the techniques in my own repairs. Now I would like to share 2 small tips which I believe have saved me call backs and subsequent failures.
#1 When testing electrolytic capacitors for any reason I ALWAYS replace them if they are 85deg C rated with 105deg C rated. Heat is the enemy of electrolytic capacitors and the 105deg C ones are designed better to withstand heat. (Often the labor to lift one leg to test is almost the same as replacement.) I buy common values in bulk.
#2 When replacing electrolytic capacitors, especially those in filtering applications I use the same capacitance at a somewhat higher voltage rating if I have replacement parts that will fit physically. Don’t rely on the circuit designer to select a part which is rated for long life. Most often the criteria is cost. In repairing the criteria always should be a long lasting repair.
Thiells NY USA