I am writing this up in case anyone else is dumb enough to try it, and you want to know basically how to do it right.
Mitsubishi M-F01 FM Tuner I got the other day had some burnt out bulbs,
turned out 1 white bulb, and both green bulbs were out.
I made the HUGE mistake of removing all the screws on the faceplate to get to the bulbs.
I did manage to get the bulbs replaced. I found that the old
incandescent bulbs ran off of 9vdc and that they were all white bulbs
with colored rubber covers, one bluish, and the other Green. The white
light comes from the blue colored one and the green you can figure out
It is not necessary to remove the dial knob to remove the faceplate, it is not necessary to remove the faceplate (but I did)
When you remove the faceplate, the dial, and tuning knob fall out. Then the dial string unravels YAY!
reality the only thing you have to do is remove the 2 screws that hold
the circuit board in the picture below circled in red. Then carefully
move the circuit board out of the way.
LED's work on a wide range of voltages and it does not matter what
polarity or if you have AC or DC. Being standard LED's they were also
the same size as the old bulbs. The old bulbs were mounted on small
circuit boards, three wires; blue, green, and Black. Blue for the white
light, green for green light and black was ground.
I removed the
little circuit boards and I connected 1 wire from the white LED to the
Blue wire, one wire of the Red LED (I chose Red instead of Green) to the
green wire, and then the remaining wires from both to the black. I used
shrink tube as needed. I installed the bulbs in the dial with hot glue
after verifying that they worked. I did this for both sides (there are 2
sets of lights).
I got it back together and restrung the dial.
Not on station!
The only disadvantage to these LED's is that if you connect them to AC
or unfiltered DC they may flicker juuuuuuuust on the edge of your
I did not take any other pictures because I was too irritated and did not think I was going to get it back together.