MGA Mitsubishi Pre-amp DA P 600 FUSE help ! !


I just purchased this vintage pre-amp. 
It works fine. However I always check the fuses for correct values.
I cannot located the fuse on this Pre-amp
I looked on top and bottom inside this unit ...also next to off and on switch plunger.
Where is the fuse ...is there a fuse ???
could it be a resistor fuse??
If it has no fuse....is that the way it was made?
Please HELP !!...thank you 


rocky1313
You already asked this question and got a reply and it had a link to a site.    You would have to create a username and password to access the info the member sent.

a lot of your questions can be answered by doing a simple google search