UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

PJL · 24th Apr 2021, 8:36 pm

If your dial is taking longer than say 1.5 seconds to return from dialling 0 then it probably needs cleaning.

I have just followed those instructions for a No. 12 dial on a 312F and it now works perfectly. The 300 series are very solidly built and easy to dismantle. Do clean the contacts carefully, I used a strip of printer paper soaked in contact cleaner (white spirit would do), placed between the contacts, then moved around whilst the contacts were closed.

24th Apr 2021, 8:36 pm	#12
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: GPO 300 and Virgin Media If your dial is taking longer than say 1.5 seconds to return from dialling 0 then it probably needs cleaning. I have just followed those instructions for a No. 12 dial on a 312F and it now works perfectly. The 300 series are very solidly built and easy to dismantle. Do clean the contacts carefully, I used a strip of printer paper soaked in contact cleaner (white spirit would do), placed between the contacts, then moved around whilst the contacts were closed.