XIEGU
Product Maintenance Manual G90/G90S Portable Short-Wave Transceiver
XIEGU All Rights Reserved Version No.: 1.0 2022-07 Page
33
of
48
Base board G90-BASEBD-V2.0.6
Fault phenomenon: The plug-in power line is short-circuited to the ground
Maintenance methods:
1. Observe whether the pins of the power input transformer are welded
reversely. The output of the transformer should be the same winding
corresponding to the welding input, and cannot be connected in reverse.
After reverse connection, it is short-circuited directly after plugging in.
2. Observe whether the winding of the transformer is burnt.
3. Measure whether the chip capacitor at the output of the transformer
is short-circuited.
Power Interface
Power Input
Transformer
