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Old 4th April 2013
  #32
Lives for gear
 

Hi
Just re-reading, the 'half heat from the supply' refers to usual 'linear' power supplies. Switchmode should be rather more efficient and cooler IN THEMSELVES but of course the DESK will be exactly the same.
Electrolytic capacitors need to 're form' at power up, which for healty specimens should be in the orfer of a few minutes, during which time they will be 'leaky' electrically speaking (they pass a DC current) and during this time switches will appear to 'click', pots 'scratch' and it may upset the biassing of some circuitry.
Matt S