I'd just like to note that although there is no physical evidence of capacitor failure, electrolytic capacitors can 'look' perfectly good and still be bad.. I'd recommend removing them from the board and doing a quick check with an analog multimeter to give you an idea of their health, or lack thereof.. If you aren't familiar with this process, here is how to proceed: Using an ANALOG multimeter, for starters, set the meter to the 'X10' resistance measurement range and place the meter leads on opposing leads of the capacitor to be tested while carefully watching the multimeter. What you should be looking for is a quick deflection of the meter indicating that the capacfitor is being charged from the meter's internal battery through it's test leads. You should see a quick meter deflection. Then reverse the meter leads on the capacitor under test and note the movement of the meter pointer. It should not deflect as much one way as the other. This is just a quick test to let you know if the capacitor is open or shorted basically. If you know someone who may have a capacitor tester, the use of one would be the preferred test method for any suspect capacitor. I hope this provides you some helpful direction. Good luck ! Please do let me know if I can be of any further assistance. If you find a questionable capacitor, I recommend replacing it with one of the same value if possible, if not you may replace it with one rated at a higher working voltage safely. Most often, you may even deviate slightly from the original value if necessary, I've done so in many electronic devices without any issues..