Bernd and Egge,
I was aware of the change from Nuvistors to FETs in the 1A1, but didn't know a similar thing had happened to the Type W.
If you are able to find the mod kit, would you mind scanning the modified schematic? I'm a complete beginner to electronics and chase enough dead ends even when I have a full manual in front of me. With incomplete schematics I find myself second-guessing everything. :-(
I checked eBay and Dave's(ArtekMedia) site but didn't see any manuals for SN >7000, although I sent an inquiry to the eBay listings that didn't show a part number or SN range for the manual.
What does PWB stand for, as mentioned in Egge's post below this?
Aaron
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--- In TekScopes@..., "Egge Siert" <eggeja@...> wrote:
It seems that you have two Type W's with the FET-Frontend and the PWB for these. With SN 7000 and above this was standard. For this late versions a new Manual was printed. FET-Frontends (less drift) were used in late Type 1A1's (I don't for sure also 1A2's) and the 1A7A (which has the same circuit as the later 7A22).
Egge Siert
