Classic phone repair (was Re: 1966 Mag: Build NE-2....)
ard at p850ug1.demon.co.uk
Mon Jul 23 16:45:40 CDT 2007
> I should have been a bit more specific in my original posting and called it
> a "GPO Trimphone" (or "BT Trimphone"?).
I did a bit of poking around for you, and I've found the numbers of the
N-diagrams that seem to apply.
N886 is the diagram for the wired-in version, N8886 is for the plug-in
(both for DTMF models).
You can get said diagrams from
As expected, while you get an overall schematics of the phone, there are
no internal schematics for the dialer (keypad/DTMF econder) or ringer.
May be some help, though.
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