It can be hard to move the capacitors without having to redesign the entire power supply, as increasing the distance will increase the inductance. Increased ind

It can be hard to move the capacitors without having to redesign the entire power supply, as increasing the distance will increase the inductance. Increased inductance will make most power supplies less stable. One thing I have done in the past when I haven't seen any ceramic capacitors on the output side, on switching power supplies, is to solder a surface mount ceramic capacitor under the electrolytic output capacitor to reduce the ripple it sees, which will reduce the amount of heat generated internally. An easier thing to do is remove the heat better. This can be done by making sure that the intake air first cools the capacitors (outside air->caps->transistors). Since most power supplies these days are shoved into a plastic box with no venting, it can be easy to add a few vent holes and a small fan. If you do this, make sure that all of the capacitors are discharged before handling as not all power supplies have bleeder resistors to make sure the capacitors self-discharge in a reasonable time period.