View Single Post
Old 15th Apr 2012, 12:17 pm   #10
Nickthedentist
Dekatron
 
Nickthedentist's Avatar
 
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,820
Default Re: Trouble with a 706 faint dial tone.

The wiring in your pic looks spot-on to me (though the T8-T9 strap isn't needed).

The bell should be fine, and I note that it's a later 2x2K one. A tiny drop of oil on the two bearings wouldn't go amiss, and you should adjust the gongs so that the clapper is just clear of each gong when the armature is in either of its rest positions.

I would swap the regulator, transmitter, receiver and dial, one by one, with the working 706, to establish if they're at fault.

I also see that you have the PCB (rather than hard wired) variant. These can sometimes suffer from tiny hairline cracks if the phone's been dropped. Hard to find, easy to repair at least.

Nick.
Nickthedentist is offline