Otari Mx 5050 BII (MK III) VU meter blub replacement
Here is information in pictures on how to replace the Otari VU meter light bubs
To find replacements look for 8V 100mA Axial Lamp 0.16" x 0.8"

The front face plate must be removed to gain access to the bulbs
Use an Alen wrench to remove the knobs
Once the plate has been removed the plastic faces of the meters can be pulled off
be careful to watch the meter zero adjustment at the bottom
Bend the old bulb down to un-solder
Now install the new bulb
Once soldered on check the bulbs...they all work GREAT!
Put the meter covers back on and put it all back together