Hello friends,
?
i have a FT-920 which has a Problem with no PLL lock (frequency display is flashing).
I found that the 2nd LO isn't producing any output.
So i checked Q2028, Q2029 and all surrounding components.
Also the crystal X2001 (60,77MHz) was checked with an VNA and looked good.
?
So i have Q2027 (2SK210GR FET) in suspicion. But this component tested good in a cheap multi-function tester...
Where and what could i check next?
?
73
Sebastian
Sebastian Petters