Is there any way to test capacitors while on the circuit board?

"With CAPACheck capacitors are checked without disconnecting the circuit in which they work, even if the circuit is powered (AC mode only). Electronically protected, can be measured in the presence of voltage, up to 630 V DC.  CAPACheck generates a signal of only 25 mV RMS, so small that semiconductors are not activated. The reading is not affected by other electronic components like transistors, diodes, integrated circuits, etc.., Connected in parallel to the electrolytic capacitor under test."

So to you more experienced EE's I ask:

1) Is the claim of this device bogus or true?

2) Is there another way to test capacitors on board without having this device? 

Obviously de-soldering and re-soldering each cap on the board is kind of a pain so if there is a standard way to test capacitors on board I would love know know about it without having to purchase the device above.  First the CapaCheck is kind of expensive for something that only tests capacitors, 2nd it's manual is in Spanish (since it's made in Argentina), and 3rd I don't particularly care for analog meters in most cases (though they are handy to monitor rapidly changing values, like the outputs of audio amplifiers).  I would love it if there is a way to test capacitors on board with one of the many other multimeters I already own, or if there is a way to do it with an LCR Meter (which I've been thinking of purchasing).

Thanks in Advance

Is there any way to test capacitors while on the circuit board? I know the voltage the multimeter puts across the capacitor can fry other components in the circuit if you try to test caps on board. I also know if you test a cap on the circuit board you'll get a false reading since you'll be testing capacitance of the entire circuit. However I came across this little device (called the CapaCheck 911) on eBay that claims it can accurately test capacitors on the circuit board ( http://cgi.ebay.com/Capacheck-Plus-911xl-Capacitor-analyzer-tester-Board-/180633337515?pt=LH_DefaultDomain_0&hash=item2a0e95feab ). Here is what the ebay page for this device says:"With CAPACheck capacitors are checked without disconnecting the circuit in which they work, even if the circuit is powered (AC mode only). Electronically protected, can be measured in the presence of voltage, up to 630 V DC. CAPACheck generates a signal of only 25 mV RMS, so small that semiconductors are not activated. The reading is not affected by other electronic components like transistors, diodes, integrated circuits, etc.., Connected in parallel to the electrolytic capacitor under test."So to you more experienced EE's I ask:1) Is the claim of this device bogus or true?2) Is there another way to test capacitors on board without having this device?Obviously de-soldering and re-soldering each cap on the board is kind of a pain so if there is a standard way to test capacitors on board I would love know know about it without having to purchase the device above. First the CapaCheck is kind of expensive for something that only tests capacitors, 2nd it's manual is in Spanish (since it's made in Argentina), and 3rd I don't particularly care for analog meters in most cases (though they are handy to monitor rapidly changing values, like the outputs of audio amplifiers). I would love it if there is a way to test capacitors on board with one of the many other multimeters I already own, or if there is a way to do it with an LCR Meter (which I've been thinking of purchasing).Thanks in Advance