Hello,
I have a stereo that is labelled as Planetron 2000.
~ I believe that my stereo is also the same as the Brother BR-5.
Issue:
Unfortunately, my 120V stereo was plugged into a 220V socket directly and my testing indicates that the transformer which supplies the amplifier and radio is blown (at the very least)
(the offender had the wherewithal to use a plug adaptor but not a voltage transformer...sigh!)
I'm aware that there could be other issues, but I'd like to replace or repair the transformer first and then see how things are.
I have trawled the Internet and posted on a number of different forums but unfortunately I have being unable to track down a service manual or schematic for the stereo so I am unsure what voltages the step down transformer supplies. I have also been unable to track down the transformer based on its labelling. (see photo attached). Therefore, at this point I am unable to replace it.
So, I'm hoping that somebody can advise on the possibility of repairing the transformer.
Perhaps the input wire on the transformer is melted/shorted (see testing results below) and I could replace the wire...is this possible? Is it simply a case of unwrapping the wire and counting the number of turns and replacing it with a similar wire with the same amount of turns? Note that I opened up one side of the transformer (the side with the 2 white wires) as I read that some transformers can have fuses, but I saw no sign of one.
The transformer
- See photo attached
- It's labelled as AC-159C (but I cannot find any reference to this on the Internet).
- There are 2 wires (both white) on one side which I am assuming are the input wires (assume 120V).
- There are 5 wires (2 x red, 1 x black, 1 x green and 1 x yellow) on the other side which I am assuming are the output wires. I have no idea what voltage they provide.
Transformer Testing
I removed the transformer from the stereo and tested the resistance between all the wires.
- White -> White = No measurement (Open circuit I assume)
- White wires to all other wires = No measurement (Open circuit I assume and expect)
- Red (#1) -> Red (#2) = 3ohms
- Red (#1) -> Yellow = 2.2ohms
- Red (#1) -> Green = 3.2ohms
- Red (#1) -> Black = 3ohms
- Red (#2) -> Yellow = 2.1ohms
- Red (#2) -> Green = 3.2ohms
- Red (#2) -> Black = 3.2ohms
- Yellow -> Green = 1.6ohms
- Yellow -> Black = 0.9ohms
- Green -> Black = 1.9ohms
I have a stereo that is labelled as Planetron 2000.
~ I believe that my stereo is also the same as the Brother BR-5.
Issue:
Unfortunately, my 120V stereo was plugged into a 220V socket directly and my testing indicates that the transformer which supplies the amplifier and radio is blown (at the very least)
(the offender had the wherewithal to use a plug adaptor but not a voltage transformer...sigh!)
I'm aware that there could be other issues, but I'd like to replace or repair the transformer first and then see how things are.
I have trawled the Internet and posted on a number of different forums but unfortunately I have being unable to track down a service manual or schematic for the stereo so I am unsure what voltages the step down transformer supplies. I have also been unable to track down the transformer based on its labelling. (see photo attached). Therefore, at this point I am unable to replace it.
So, I'm hoping that somebody can advise on the possibility of repairing the transformer.
Perhaps the input wire on the transformer is melted/shorted (see testing results below) and I could replace the wire...is this possible? Is it simply a case of unwrapping the wire and counting the number of turns and replacing it with a similar wire with the same amount of turns? Note that I opened up one side of the transformer (the side with the 2 white wires) as I read that some transformers can have fuses, but I saw no sign of one.
The transformer
- See photo attached
- It's labelled as AC-159C (but I cannot find any reference to this on the Internet).
- There are 2 wires (both white) on one side which I am assuming are the input wires (assume 120V).
- There are 5 wires (2 x red, 1 x black, 1 x green and 1 x yellow) on the other side which I am assuming are the output wires. I have no idea what voltage they provide.
Transformer Testing
I removed the transformer from the stereo and tested the resistance between all the wires.
- White -> White = No measurement (Open circuit I assume)
- White wires to all other wires = No measurement (Open circuit I assume and expect)
- Red (#1) -> Red (#2) = 3ohms
- Red (#1) -> Yellow = 2.2ohms
- Red (#1) -> Green = 3.2ohms
- Red (#1) -> Black = 3ohms
- Red (#2) -> Yellow = 2.1ohms
- Red (#2) -> Green = 3.2ohms
- Red (#2) -> Black = 3.2ohms
- Yellow -> Green = 1.6ohms
- Yellow -> Black = 0.9ohms
- Green -> Black = 1.9ohms