I have an RCI 2990 that has very low receive. I can hear strong stations yet there is no signal on the S meter. When I key up a radio on the bench beside it I get signal on the S meter but it's not pegged out and adjusting the RF gain doesn't do anything, S meter stays in the same place.
I have checked the RF Gain potentiometer and it seems to be okay. I even put another potentiometer in circuit and nothing changed. I checked Q18 (HF Amp) and the voltages were similar to a working 2950 I have. (E - 3.78v | C - 8.49v | B - 3.22v) but a little off from the voltages listed on cbtricks (E -1.41 | C - 7.73 | B - 2.51)
Can anyone point me in the direction of what to check next? Should I pull Q18 and replace with a new 2sc1674? Any help would be appreciated.
Thanks!
I have checked the RF Gain potentiometer and it seems to be okay. I even put another potentiometer in circuit and nothing changed. I checked Q18 (HF Amp) and the voltages were similar to a working 2950 I have. (E - 3.78v | C - 8.49v | B - 3.22v) but a little off from the voltages listed on cbtricks (E -1.41 | C - 7.73 | B - 2.51)
Can anyone point me in the direction of what to check next? Should I pull Q18 and replace with a new 2sc1674? Any help would be appreciated.
Thanks!
