The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

Thanks again Rick....I'll try all that and get back to you here in a couple of days with the outcome, Ive become kind of obsessed with getting this thing running and have spent all day on it...have to do some paid jobs the next couple of days instead. Ive found a couple of other problems, not sure i...

8.6 Volts on the emitter of that transistor when mode set to AM. I checked the main supply and its only 12.9 volts from internal PSU. (I was thinking maybe the 8.6 due to a higher than 13.8 supply but no go) I wish I had this set to repair 10 years ago when my eyesight was better, it took me an hour...

Thanks for all your help Rick...Ive not repaired cb's for many years so am pretty rusty on all this. Ok..this is where I am at. (Im not worried abt TX at this stage) SSB RX is perfect, cannot belive how sensitive and good audio is. There is NO AM RX whatsovever....even 200uV direct from Sig-Gen ther...

Thanks alot for the reply...yes found one of the caps you mentioned was bad so now just have to wait to source a new 6DG6. On closer inspection the PCB appears to be a vary close variant of a single board Cybernet PLL02A Chassis (with a motorola equivalent PLL). For example the radio had a "sli...

G'day, I have a DAK Mark X SSB Base Station. After many hours of finding a dry joint and other problems I finally have it semi-running. I have no RX on AM..almost no background audio. When the output valve (tube) is plugged in a 2 watt resistor supplying the B+ rail (450 volts) gets red hot, I suspe...