I'm having problems with an Aloka SSD-500 ultrasound unit. I replaced a Triac and a bridge rectifier in the power supply but the triac was not an exact replacement. The power supply doesn't blow fuses anymore but the triac isn't turning on. Does anyone have a schematic for the Aloka power supply PSU-5500B? Any assistance would be much appreciated.
Tue Apr 21 2009
The triac isn't turning on
Tue Apr 21 2009Reply from WrenchGuy
I can't recall seeeing a triac in a power supply that was not used for crowbar over-voltage protection, so that might not be your problem.
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