Magnum S9 no ssb receive final bias stuck on fm all ok
Posted: Monday 11th Mar 2013, 6:52
Radio Make and Model: magnum s9
PCB Number:
PLL Number:
Test gear available: most of all needed. Frq counter, freq generator, scope, meters, capacitor esr tester.
Symptoms: when selecting ssb the current draw on the psu shows as much as full power draw on fm tx. I hear nothing on ssb. Also on fm I hear some buzzing and strange noises volume also changes a little on its own, but it's more or less working fully on fm receive.
What is working: fm tx and receive okish ssb tx working,
What has been tried: removed driver legs from board when I select ssb the current has stopped being drawn but still nothing on ssb can be heard its very quiet.
Did it suddenly happen ?: I received this radio to repair
Anything else that may be of help?:
PCB Number:
PLL Number:
Test gear available: most of all needed. Frq counter, freq generator, scope, meters, capacitor esr tester.
Symptoms: when selecting ssb the current draw on the psu shows as much as full power draw on fm tx. I hear nothing on ssb. Also on fm I hear some buzzing and strange noises volume also changes a little on its own, but it's more or less working fully on fm receive.
What is working: fm tx and receive okish ssb tx working,
What has been tried: removed driver legs from board when I select ssb the current has stopped being drawn but still nothing on ssb can be heard its very quiet.
Did it suddenly happen ?: I received this radio to repair
Anything else that may be of help?: