Got Bad Capacitors? Here’s What to Do!

FIVE bad capacitors are what got a Condor power supply grounded! Output voltage reduced to zero! Our customer had fallen victim to one of the most failure-prone components in a power supply: the electrolytic capacitor.

Staying informed on the facts about  bad capacitors is IMPORTANT to protecting your power supply and your other critical electronic assets! The two primary items that are affected by bad capacitors are Drives and Power Supplies. All Drives and Power Supplies use Electrolytic Capacitors in some part of the unit!

Here are some things to know about bad capacitors:

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Real Life From the Plant: C Axis drive not ok Error on Servo Drive

servo drive repairsFrom the outside, this drive looks innocent enough.  But on the inside all HELL was breaking loose! “C Axis drive not ok Error” was the symptom reported.
But this Osai-Prima Electro Servo Drive 97942050N drive was in need of some serious repairs! Burned spots with burned traces were found inside, along with bad capacitors, bus-caps and bad I/O relay.
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osai prima repairsWhat would cause all this in a servo drive?
Excessive heat, over or under voltage surges and sags and/or rises in equivalent series resistance values are all possibilities along with component aging. In the case of the burned traces, other causes could include previous use of inappropriate acid core solder causing a short, or contaminants such as metallic dust, common in manufacturing facilities.

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