View Single Post
Old 18th May 2020, 8:16 am   #50
TonyDuell
Dekatron
 
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,191
Default Re: Quiet or no dial tone in a GPO 706

There shouldn't be a capacitor connected to T19.

You aren't confusing T9 (right hand terminal in the top row) with T19 (right hand terminal in the bottom row) are you? T9 goes to one side of the 1.8uF capacitor.

What is connected to terminal 4 of the ASTIC? What colour of wire. Trace it (using the meter) to a terminal on the gravity switch (that's where it should go). It's labelled as terminal 4 of the gravity switch in N806, but no idea how the terminals ar numbered. Now find the other terminal on the gravity switch which connects to it when the handset is off-rest. Terminal 5 in N806. What colour of wire is connected there? Where does it go? It should be T19.
TonyDuell is offline