R1155: Removing/replacing three gang tuning condenser - Page 3 - UK Vintage Radio Repair and Restoration Discussion Forum

Keith · 21st Jan 2008, 6:53 pm

David,

Before this gets too far off topic, here is a suggestion. Try using a low voltage buzzer (i.e. electromagnetic type) and a battery to find the shorting vanes. In a darkened room you should be able to see sparking where the vanes are making contact.

restorer · 12th Feb 2008, 12:23 am

Hi,

I found your comments following a search for gang shorting problems. My problem is the RF section at the very low freq end. Discovered during calibration. I have proved that the moving plates do not short at the visable point with a paper feeler Gauge. It seems that the problem may be at the base of the fixed vanes. There is considerable flux filling the plates at the connection point which may have caused some corrosion growth. This can only be resolved by removing the complete unit for inspection.

21st Jan 2008, 6:53 pm	#41
Keith Heptode Join Date: Jan 2003 Location: Tewkesbury, Gloucestershire, UK. Posts: 693	Re: R1155: Removing/replacing three gang tuning condenser David, Before this gets too far off topic, here is a suggestion. Try using a low voltage buzzer (i.e. electromagnetic type) and a battery to find the shorting vanes. In a darkened room you should be able to see sparking where the vanes are making contact. __________________ Keith Yates - G3XGW VMARS & BVWS member http://www.tibblestone.com/oldradios/Old_Radios.htm

12th Feb 2008, 12:23 am	#42
restorer Retired Dormant Member Join Date: Feb 2008 Location: Essex Posts: 2	Re: R1155: Removing/replacing three gang tuning condenser Hi, I found your comments following a search for gang shorting problems. My problem is the RF section at the very low freq end. Discovered during calibration. I have proved that the moving plates do not short at the visable point with a paper feeler Gauge. It seems that the problem may be at the base of the fixed vanes. There is considerable flux filling the plates at the connection point which may have caused some corrosion growth. This can only be resolved by removing the complete unit for inspection.