Dave, thanks for pointing that out. the 13.8 is the only voltage I see
on the HA1137. I do not see the input signal of 1.9v on pins 1,2,3 of
the chip. I do see the 12.6 v at F2 but nothing after. I will try to
replace this fuse? F2 and the HA1137. Does this make sense?

Thanks, Gary


David Farber wrote:
Gary L. Woodruff wrote:
Howdy all, I have a vintage Pioneer receiver. It will pick up AM
stations but is dead on FM. I do not get any deflection on the tuning
meters and no static. I do have a print. I do have b+ into the board
and have good voltages at the HA1156.
I do not see anything at the HA1137, with the exception of 13.8v at
pin 11 (should be 5.6v). There is only a coil in series with a cap to
gnd between b+ and this pin. I do not have a way to measure inductance
on the coil but have measured the cap .047 microfarads is spec and
I get .055. I am tempted to try to replace the IC (HA1137) but am
concerned about the amount of voltage I see on pin 11 of the IC.
Any and all advice is GREATLY appreciated.


Thanks, Gary

That 5.6 voltage should be for pin 10, not pin 11. Pin 11 goes to the B+
supply and the 13.8 v is correct.

Good luck.