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model 48 464
#4

Thanks for suggestion 

Yes I have a rf signal generator and it also has an audio generator.
Tried the alignment procedure but could not get any signal after the first step. i then noticed that there are trouble shooting procedures for the radio as per attached. section 1 measuring voltage checked out 
section2 revealed no signal . I checked the resisters since the caps and tubes are good and R203 reads 586 K verses the parts  list of 470 K and R204 read 233K vs 130 ohms Its gets weirder .The next step for section 3 shows  in figure 3 C307 (.05mf) connecting from pin 5 on the 50 A5 to pin 3 on the 7b7  it does not show this on the schemo. the current wiring is pin 2 of the 50 with a .02 mf connected to pin 5 of the 7b7.

I am very carful when replacing caps .I don't remove the old leads from the pin  entirely. I cut the lead from the old cap and connect to that lead so i dont wire to the wrong pin. What  controls the figure 3 or the schemo?  

Also  the rf coils do have continuity and seem ok


Attached Files
.pdf Scan2023-11-20_145151.pdf Size: 1.5 MB  Downloads: 179


Messages In This Thread
model 48 464 - by retired2020 - 11-19-2023, 06:29 PM
RE: model 48 464 - by morzh - 11-19-2023, 07:06 PM
RE: model 48 464 - by Radioroslyn - 11-19-2023, 10:49 PM
RE: model 48 464 - by retired2020 - 11-20-2023, 04:25 PM
RE: model 48 464 - by Radioroslyn - 11-20-2023, 08:29 PM
RE: model 48 464 - by retired2020 - 11-20-2023, 09:20 PM
RE: model 48 464 - by Radioroslyn - 11-21-2023, 12:58 AM
RE: model 48 464 - by retired2020 - 11-26-2023, 05:55 PM



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