Ferrograph 632 - UK Vintage Radio Repair and Restoration Discussion Forum

Tamlamotown · 7th May 2012, 10:38 am

Hi,
I have a Ferrograph 632 which has develop a fault, when working the main switch (SW1) to Fast Forward or Fast Rewind it produces quite a loud clack when the output volume is turned up.
There doesn't appear to be any supression on the motor side of the switch mechanism, can anyone point me in the right direction to cure this - there is a problem with the upper track output, it has a habit of making shushing and crackling noises when the volume is turned up so I do need to check out the Valves (Tubes) in that department, but I wonder if this might also be a contributing factor in the above switch cracking saga.
The machine is immaculate and it would be great to get it working correctly so I would welcome any help.
Many thanks

Vic

Tim · 8th May 2012, 4:32 pm

You could try a 0.1uF 1000 v across the mains, or the motor switching contacts.

Tamlamotown · 9th May 2012, 10:39 pm

Hello Tim,
Many thanks for that - will try the cap across the motor switch contacts.
I sorted the upper track noise problem it was the valve, so apart from the crack when switching from record or play to either wind positions she sounds damn good.

Vic

7th May 2012, 10:38 am	#1
Tamlamotown Retired Dormant Member Join Date: May 2008 Location: Staffordshire Posts: 33	Ferrograph 632 Hi, I have a Ferrograph 632 which has develop a fault, when working the main switch (SW1) to Fast Forward or Fast Rewind it produces quite a loud clack when the output volume is turned up. There doesn't appear to be any supression on the motor side of the switch mechanism, can anyone point me in the right direction to cure this - there is a problem with the upper track output, it has a habit of making shushing and crackling noises when the volume is turned up so I do need to check out the Valves (Tubes) in that department, but I wonder if this might also be a contributing factor in the above switch cracking saga. The machine is immaculate and it would be great to get it working correctly so I would welcome any help. Many thanks Vic

8th May 2012, 4:32 pm	#2
Tim Dekatron Join Date: Jan 2003 Location: Bradford on Avon, Wiltshire, UK. Posts: 3,310	Re: Ferrograph 632 You could try a 0.1uF 1000 v across the mains, or the motor switching contacts. __________________ "Nothing is as dangerous as being too modern;one is apt to grow old fashioned quite suddenly."

9th May 2012, 10:39 pm	#3
Tamlamotown Retired Dormant Member Join Date: May 2008 Location: Staffordshire Posts: 33	Re: Ferrograph 632 Hello Tim, Many thanks for that - will try the cap across the motor switch contacts. I sorted the upper track noise problem it was the valve, so apart from the crack when switching from record or play to either wind positions she sounds damn good. Vic