Hello guys. I have recently bought a non working
148 gtl. I would like to know some opinions on what
might be the problem(s) with it. I have no RX, no
band hiss whatsoever. Also no TX, the light does not
change to red when the ptt is pressed. The PA does
not seem to work also. I have measured voltages on
both MB3756 voltage regulator, and the PLL.
Voltages are as followed: MB3756
Pin 1-11.8V, Pin 2-13.8V, Pin 3-8.3V, Pin 4-0,0V
Pin 5-13.8V, Pin 6-8.3V, Pin 7-NC,
Pin8 (w/PTT pressed)-0,0V
PLL Voltages I did not right down, but most of the pins
were around 2,3V, and some up, some down,
but they do not check ok with the values on the
schematic. Some of the MB3756 voltages are not
ok, as one can see on the schematic.
Any opinions on what might be causing this
no RX/TX problem?
Thanks in advance,
João G.
