Aileite ESR-200 Type Satellite Receiver Switch Power Troubleshooting Circuit

Published:2011/8/4 21:24:00 Author:Robert | Keyword: Aileite, Satellite, Receiver, Switch, Power, Troubleshooting | From:SeekIC

Fault 1: Starting without any instructions.If pressing the power switch, it could hear the switch transformer's normal pulses sound. By testing the output ports' voltage of each group, it is found that they are all just a half of the normal working voltage. By adjusting the VR and testing the IC2's R port's voltage, it could vary between 0.9~1.5V. The the output port K has corresponding variation. But it could achieve the normal value. The IC2's external elements are tested to be normal. Then replace a new IC2, the fault is eliminated. Testing the IC2's R port's voltage again, its result is 2.5V. The K port is 11.3V. By adjusting VR1, The IC2's R port's voltage could vary between 2.1V and 3V, also the output port's voltage has the corresponding variation.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Repairing_Circuit/Aileite_ESR_200_Type_Satellite_Receiver_Switch_Power_Troubleshooting_Circuit.html

Print this Page | Comments | Reading(3)