RCI 2950 NO RX SSB

tireman247 · Post by **tireman247** » Saturday 10th Jan 2009, 15:07

Radio Make and Model: RCI 2950
PCB Number: ept295013z
PLL Number:
Test gear available: digital multimeter ,frequency counter
Symptoms: no RX ssb/cw

What is working: every thing else works fine good TX in all mode but no RX in ssb/cw only.

What has been tried: align the receive but no change

Did it suddenly happen ?: don't know
Anything else that may be of help?: when i got the radio there was no RX/TX in any mode only PA was working ,there was also a loud squeal from the speaker . IC21 was replace to stop the squeal and also replace IC17 and IC7 and the radio came back to life the only problem i see now is that there is no SSb RX , TX is ok. Q20,Q21,Q22,Q23 all check OK.

tireman247 · Post by **tireman247** » Monday 12th Jan 2009, 1:15

it doesn't make sense ? why good receive am/fm and no receive ssb??? all voltage on the IC's are good and all the transistors that i check so far are good also? could the crystal X3 that is next to L29 be the problem? the radio does transmit full power on ssb but i don't know if it is on frequency. AM/FM receive is great it's better than my cobra 200gtl.

tireman247 · Post by **tireman247** » Monday 12th Jan 2009, 15:16

I wonder? could L15 and/or L16 be bad ?these are RX adjust for ssb.

euhara · Post by **euhara** » Monday 12th Jan 2009, 20:10

Have you checked Q54 the SSB/CW audio switch?

Jim

tireman247 · Post by **tireman247** » Tuesday 13th Jan 2009, 4:09

Q54 is ok ,it's more like there is no signal to amplify i don't see any bars on the display but when touch C82 with a small screwdriver i see bars but no sound so i replace C82 and still have nothing on ssb RX?

tireman247 · Post by **tireman247** » Tuesday 13th Jan 2009, 13:22

UPDATE ,don't know what i did or what happened but the display now show bars on ssb when signal is coming in so i do have RX in ssb but i still have no audio ? AM/FM/PA is ok.

euhara · Post by **euhara** » Tuesday 13th Jan 2009, 21:49

Only other thing I can think of is to check IC19 and C216 and C219, but I am not a tech.

Jim

tireman247 · Post by **tireman247** » Wednesday 14th Jan 2009, 2:15

IC19 ,C216 and C219 are ok

tireman247 · Post by **tireman247** » Thursday 15th Jan 2009, 14:25

i was told to check D37 ,i did , problem solved