Pyramid - PS21KX 20 Amp Powersupply overload I got this from a friend and the transistors on the back were bad so I - Pyramid - PS21KX 20 Amp Power Supply question Search Fixya Press enter to search.
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I have a pyramid phase III 25 amp supply. When I use 15 watts or less my supply works o.k., but when I go to 50 watts the voltage drops from 14.8 to 9.2 volts. Also, 2 of the pass transistors do not heat up. I have no schematic, sure would appreciate a copy or a solution. Thanks, david I have a pyramid phase III 25 amp supply.
When I use 15 watts or less my supply works o.k., but when I go to 50 watts the voltage drops from 14.8 to 9.2 volts. Also, 2 of the pass transistors do not heat up. I have no schematic, sure would appreciate a copy or a solution. Thanks, david.