I read the service manual, I say I look at the schematics, and found the trimmer. As I said i have no idea about PLL but inside the can there is a transistor with a thermistor in the emisor in parallel with a resistor. And my problem disappears when radio is hot.
So I decided to accelerate the process. Took a soft hair drier and pointed to the holes for TP and TC. And the "time to normality" went almost to zero.
So I guess the no voltage in TP and strange sound in LSB has to do with this transistor not oscillating, or something similar, as I said I have no idea about PLL neither this transistor that does not look as a transistor in the schematic hahahaha
The service manual says to avoid touching the trimer capacitor until 5 minutes from cold start, coming from 1h cold 15/25?C. After some minutes I get voltages, but 50% what the manual says. around 3V in USB, 1,5V LSB, Witdh according to manual.
I dont know what is going on. Supposing this "malfunction" is not normal, I guess it will be due to low voltage somewhere so the Thermistor takes a longer time to reduce resistance. I helped with the hair drier. I did not want to put too much hot air through the holes as my grand dad told me too much heat is not good for semiconductors.
I glued the 2nd FI FT 455kHz filter in the metal cover of PLL unit, and wired it to FI unit. So it is not so easy to lift the cover.
I guess this large cover just pulls up, held by some presure in the sides. I may try.
In the meantime I go on thinking next step. I think it will be? a problem of voltage, a bad resistor or capacitor.
Maybe I manage to catch a friend that says he knows about PLL.
73 EA1FC
