I brought this BlackJack SolderWerks Soldering Station w/Digital Display (BK2000+) from http://circuitspecialists.com about six months ago. It was working great up until now.
http://www.circuitspecialists.com/prod.itml/icOid/9748
What started happening ? when I was soldering an component the soldering iron temperature will drop from 400 deg F to about 360 deg F and then slowly rise back up to the set temperature. And then the temperature will not hold steady. At first I thought it was a failing heating element.
After changing the heating element and I was still having the same problem. So I when ahead an open up the soldering station itself. I found a simple circuit board with a some resistors, 4) diode, 1 Triacs Thyristor,Triac & SCR Output Optocouplers Phototriac, 1) 6 volt regulator, and 2) 470uf @ 35v caps
The two 470uf caps was an unknown brand that I never heard of. So I remove them both and begin to take measurement with my esr meter and with my cap meter.
The strange thing was both caps pass on the esr meter but the reading was strange with my cap meter. The cap meter reading will slowly rise to the value of the cap. it look like my cap meter was having a hard time charging each caps. So I replace them both with low esr Panasonic caps and now my soldering station is working great.The temperature is holding very steady. I almost willing to say its working better that before!!!
http://www.circuitspecialists.com/prod.itml/icOid/9748
What started happening ? when I was soldering an component the soldering iron temperature will drop from 400 deg F to about 360 deg F and then slowly rise back up to the set temperature. And then the temperature will not hold steady. At first I thought it was a failing heating element.
After changing the heating element and I was still having the same problem. So I when ahead an open up the soldering station itself. I found a simple circuit board with a some resistors, 4) diode, 1 Triacs Thyristor,Triac & SCR Output Optocouplers Phototriac, 1) 6 volt regulator, and 2) 470uf @ 35v caps
The two 470uf caps was an unknown brand that I never heard of. So I remove them both and begin to take measurement with my esr meter and with my cap meter.
The strange thing was both caps pass on the esr meter but the reading was strange with my cap meter. The cap meter reading will slowly rise to the value of the cap. it look like my cap meter was having a hard time charging each caps. So I replace them both with low esr Panasonic caps and now my soldering station is working great.The temperature is holding very steady. I almost willing to say its working better that before!!!
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