Question about Sanyo DS27510 27" TV
I need to test the voltage regulator which is a c4423. I would like to know what readings i should be getting.
The only test you can do on this regulator is to see if is shorted or not,this is a switching regulator ,that means is design to be use in a switching power supply witch turns the transistor on and off constanly and uses feedback to stay regulated,the B+ they use in the collector is around 150 volts,an small square wave is applied to the base ,it gets amplifies and energizes the primary side of the transformer to generate all the supplies ,one of this supplies provides the feed back.I hope I have given you the more than the information you needed.
Posted on Oct 16, 2006
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