Are you Shure? Yes, I’m sure. In this post, I am sure that I want to convert a 110v Shure FP42 to 240v. So, what is the FP42? Best way to describe it is the stereo version of the M267. At the moment, I’m not convinced it will bring much to the table because the Shure M267 and Level-Loc were both mono. Sound Toys Devil-Loc runs dual mono. It shifts the crushed sound down the middle which accentuates the sides through adding definition to the centre. Stereo, not sure but it will be interesting to find out. To get there, I imported from the US where these things are so much cheaper than the UK.
Now, as per usual – this is not a guide! It is my diary of events which I use to record and remember the process. As with the Matrix ROM update, sometimes I need to revisit the process and as a result, take step by step photos and make notes. I share for educational and interest purposes though because I like reading about mods. Anything you follow or do here is at your own risk! Remember, electricity kills!
To begin, with the power cord unplugged, I lifted the sides in the same way as the M267. This time, I only needed to unscrew two screws per side but this could be because it has already been opened.
Head to the power supply and look for the six pin jumper. The plug needs to be popped out and moved into the 240v position. Mine was a little tough. It’s been on there for a while and it took some gentled rocking, side to side. At one point, I disconnected the yellow lamp lights slightly above it to get my fingers in there a little tighter and opened the clip slightly with a flat head screwdriver.
The blue square on the right, signifies the 110v position. I needed to shift it to the left.
Next, the fuse needs to be swapped. Pop off the plasticy cover and place a suitable fuse inside. I used a T50mA/250V fuse inside the fuseholder marked F202.
I then replaced the cover. It took a bit of reshaping. I pulled the cover outwards to the side, got it nice and wide and gentley slide it over the top. Took me about 6 attempts and I got it over and in.
Finally, I removed the 110v fuse and replaced the cover.
After the jumper had been swapped, 250v fused placed onto the board and removal of the 110v fuse, I then rewired the plug in the same way as the Shure M267 project.
Plugged it on and voila. Nothing tripped, all looked good. One thing to note is that I purposely bought a broken unit for cheap (total import came in at about £65) and my next steps will be to fix the original fault which I believe to be the voltage regulator or capacity by the power supply. I like that these devices have battery powered compartments which I can use as part of the trouble shooting process and key – fix without having to hook it up into the mains.
I’ll post the result – and step by step process – in. future blog post.