On Wed, 2008-03-26 at 20:05 -0400, Louis Ciotti wrote:
> All,
>
> So I took the cover off and was probing around checking connections.
>
> I took the following data on voltages on the controller board at each
> transistor per the instructions. Mode 3 in the VFO position.
>
> Transistor | Collector | Base | Emitter |
> | T | R | T | R | T | R |
> ===============+=======+=======+=======+=======+=======+=======+
> Q1 | 0.37 | 13.78 | 0.8 | 0 | 0 | 0 |
> Q2 | 13.70 | 0.044 | 0.037 | 0.74 | 0 | 0 |
> Q3 | 13.70 | 13.80 | 13.7 | 13.8 | .221 | 0 |
> Q4 | 13.71 | 13.80 | 0.037 | 11.7 | 11.08 | 0 |
> Q5 | 0 | 11.09 | 0 | 5.06 | 0 | 4.33 |
> Q6 | 0 | 0.021 | 0 | -.035 | 0 | 3.72 |
> ---------------------------------------------------------------+
>
> It appears as if Some of the Transistors are bad on the Control board.
>
> Anyone have any part numbers for replacements??
>
> Thanks
>
> Lou
> KC2RVD
>
Q3 could be bad unless the plastic cased transistor pins are not what
you expect. There is less consistency about pin locations with plastic
TO-92 transistors.
73, Jerry, K0CQ
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