Before
Remove 6nos. of screw at top & 3nos. of screw at bottom
Inside view
Close-up
Remove front panel
Previous tube (5751 3mica gold plated)
Replace to 5751 Command Series
Done
In rack
Heating period
Experiment tubes
Just share some idea how to open MIC2200 to change a tube. Hope it's can give some nice experiences to you when you try to open your own.
73/88 de 9M2ODY