Need help getting MV1B1 mvs R100 value .

Hello to everyone in this wonderfull forum.!

I need a little help to get back to work my MVS MV 1B.
The board had a couple of smd resistors and smd capacitors missing.

I could find the value of the capacitors and one resistor.....but I can't find the value of resistor R100.

I cannot find a valid schematics of the board MV1B1 and so I need a little help.

I add a picture to help find the location of the missing component.
(the pic is not mine...I find this image with the help of google.)

Any help will be appreciated.

Thanks a lot to everybody .!

Best regard

Filippo