Mellotronists

While I'm on a roll; I don't know if this is the same for MKII owners 
but when removing the front control panel on an M300 there 2 
things you need to look out for. Firstly, do make sure the mains 
lead is unplugged because the left hand black octal plug supplies 
mains current to the main power switch and this plug is MALE! I've 
had the entire national grid up my arm on a couple of occations 
now so it's very easy to do. Also the cable connections to the 
station selector switches are supported by nothing other than their 
solder and the wiring looms and plugs flop about when you remove 
the panel. These solder connections are prone to breaking off 
leaving you with a headache determining which of the many solder 
posts they came from and then soldering them back on quickly 
enough so the insides of the switches don't fall apart on you. So 
support the cables/plugs with your fingers when you remove the 
control panel!
John