Quote:
Originally Posted by Vintage Engr
Incidentally the early copy of the manual I have does not show the modification, so any further info on that wouild be appreciated.
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Hello,
My PM5519 service manual has this printed on the front cover:
(9499 525 00711) 800201/2/01-03.
I also have a supplement ref. SGS 27, which covers several changes, but nothing that is likely to relate to your problem. I can scan it, and post in this thread, if you wish.
The supplement SGS 27 lists other supplements that had already been published: SGS 13, SGS 20 and SGS 25 (which I do not have).
However, the supplement I do have came with the PM5519 service manual that I ordered from Pye Unicam, circa 1983. It's therefore likely that these have already been incorporated in the service manual that I have (but not certain!).
These supplements cover changes/corrections/additions to both the PM5519 Operating and Service manuals.
In case it is relevant to your hash/noise problem, there is a wiring mod shown on the layout drawing of the main PCB. I posted scans of this earlier in this thread, but only part of the track layout change is shown, so:
wire 387/1-395/3 added
connection 395/2-395/3 separated.