[HAM] Alignment of Start Motor. Warning about exposed AC mains terminal on the plastic bobbin of the start motor coil.

Kon Zissis kziss at ozemail.com.au
Thu Mar 22 08:15:13 CDT 2007


Hi everyone.
I have never encountered the alignment  problem with the start motor so
I do not know of a proper  solution but I thought that it would be a
good idea to post a warning here for anyone inspecting or touching the
start motor  to first  pull the organ power  plug from the mains  AC
wall socket  or power  board  strip before touching the start motor
because on my own 1962 C3 and on other Hammond organs I have come across
there is an exposed   solder terminal  on the plastic bobbin of the
start motor coil  and there is always live AC voltage on this  solder
terminal  even when the organ is switched off. 
 
When I first bought my 1962 C3 in 2002 I opened the back up to look
inside. The organ was switched off but the plug was  connected  to the
mains AC power board strip,  and whilst going over the tone wheel
generator  I placed my  hand on  the start motor and my  fingers
touched  the exposed terminal  on the plastic bobbin   and I received a
nasty 240 volts  AC electric shock and because my  hand was also
touching the  grounded  chassis of the motor and the tone wheel
generator ,  the electric  shock  caused the house  safety switch to
switch off  thus  blacking out the house and  thus also causing the
inconvenience of having to reset the  various digital clocks  of the
clock radios  and the oven clocks in the house . 
 Another time I accidentally dropped a small  jewellers style
screwdriver  on to the start motor and  the screw driver  made contact
with the  exposed solder terminal on the bobbin and the  grounded  metal
chassis of the end of the tone wheel generator and again this caused the
house safety switch  to switch off thus blacking out the house and
arousing the  peeved annoyance of my parents and brother as well as the
nuisance of having to reset all  various digital clocks  in the house.

The lesson from all this is to make sure that the  plug is pulled out of
the mains AC socket before touching the start motor.
All the best.
Kon


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