I am not very familiar with the Jupiter, but this has the feeling of someone
attempting a repair using either parts they had on hand or what they could
purchase easily. I could be way off here and TT did an update and never
revised the BOM/manual.
> On Feb 21, 2023, at 10:09 AM, ROLAND HOWELL via TenTec
> <tentec@contesting.com> wrote:
>
>
> Hi Folks
>
> A bit puzzled by the component / circuit diagrams in the user hand book of
> the Jupiter, the PCB 81889 Rev A board shows Q20 as being a 2SC1971 whereas
> the 3 legged fuse fitted on my board is a RD06HHF1!.
>
> The PA board 81897 also shows finals as being SD1405, mine are MRF454 even
> the drivers that are supposed to be 2sc3133 are different.
>
> So my question(s) is/are, did changes take place during the assembly run for
> this model to either or both of these boards.
>
> As always advice greatly appreciated
>
> Snowy
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