Dual voltage transformer
Posted: Sat May 12, 2018 1:09 am
Hi,
I have an Orange Crush Bass 50 which has no power.
After opening the box I discovered the wiring to/from the power transformer is not all connected and when I trace the circuit it is clearly incomplete.
The transformer is dual voltage (110/240) and the switch on the amp is pre-set at the factory to 240v but the wiring on the back of this switch is connected for the 110v side. It also has a 2A fuse inside which is supposed to be for 110v (240v uses a 1A fuse).
Power transformer has 4 input wires (2 on each side) and 4 output wires (these go to the main circuit board).
On one side the input wires are black and brown. The other side is red and blue.
The brown wire is connected. The red wire is connected. Blue wire is connected to the power socket (the wall power) then goes to the wrong side of the switch where it also continues on to the transformer. Black wire is not connected at all.
So it appears the red wire is useless because it is connected to the switch which is set to 240v and therefore doesn't complete any circuit.
My limited understanding of power transformers and voltage is when you put voltage in series you add the voltage. In parallel the voltage stays the same.
So I "think" the black and red wire should be connected in series and the brown and blue wires should take the input from the wall power.
So... do I connect the black wire To the 240v side of the switch and remove the blue wire then connect the black and red together? This should put the two halves of the transformer into series right?
I have an Orange Crush Bass 50 which has no power.
After opening the box I discovered the wiring to/from the power transformer is not all connected and when I trace the circuit it is clearly incomplete.
The transformer is dual voltage (110/240) and the switch on the amp is pre-set at the factory to 240v but the wiring on the back of this switch is connected for the 110v side. It also has a 2A fuse inside which is supposed to be for 110v (240v uses a 1A fuse).
Power transformer has 4 input wires (2 on each side) and 4 output wires (these go to the main circuit board).
On one side the input wires are black and brown. The other side is red and blue.
The brown wire is connected. The red wire is connected. Blue wire is connected to the power socket (the wall power) then goes to the wrong side of the switch where it also continues on to the transformer. Black wire is not connected at all.
So it appears the red wire is useless because it is connected to the switch which is set to 240v and therefore doesn't complete any circuit.
My limited understanding of power transformers and voltage is when you put voltage in series you add the voltage. In parallel the voltage stays the same.
So I "think" the black and red wire should be connected in series and the brown and blue wires should take the input from the wall power.
So... do I connect the black wire To the 240v side of the switch and remove the blue wire then connect the black and red together? This should put the two halves of the transformer into series right?