Re: Yaesu FT480R
Hello Jon,
I started to carry out tests and found that the waveform on TP8 was a sine wave of 2 volt amplitude. The frequency starting at 145.520 is as follows
.520--680 kz
----1--680.4
----2--680.9
----3--681.4
----4--681.9
----5--680.24
----6--680.0
----7--680.0
----8--679.0
----9--679.4
---30--680.0
I then noticed that crystal X03 was loose and discovered a cracked track on the pcb.
I have repaired this but there still is an intermediate fault in the vicinity of X03. I am working on this and will let you know developments. X03 is the crystal associated with Q15.
I have not started on L17 yet.
Chris.
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