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WAVETECK SI4015 ISSUES


 

I have the si 4015 that fail self tests
The faults are:
power supply ok
computer? ? ?related test failed.
data modual ok
mod.gen? ? ? ? ok
demodulator failed
duplex related test failed
synthesysizer related test failed
rf unit related test failed


 

any ideas where to start on this?,i have new smd caps ordered for a start.