Yup I've done one a while ago.
Its not really easy but not the worse I've ever did before.
The separate components are hard soldered and there isn't a lot of from to work around.
You'll need to slide the chassis out of the front of the TPR's body to access the deck so it can be removed and so you can get to the tape counter belt.
Like I say it's been a few years and this is what I remember....
Take your time and you can do it....