Hi,
I'm trying to diagnois a non-working scope on a Marantz 150.
Does any one know what the service manual means when they say to "short
the collectors on both FET's " in order to center the beam to see if
the vertical or horizontal amp is bad.
There is a pair for each amp.(H905 & H906 and H907 & H908)
I know that FET's don't have a collector but they are labeled that way
on the board and schematic so that's not the question.

The question is: Do I connect the two collectors together to short them
or do I connect them to ground to short them? I was going to connect
them together but a "tech" thought I should connect them to ground.

Also, to test if both amps are out, can I short both pairs at once?
Hopefully it won't come to that, so the first question is more
important.

More than one person responding would be good.
Thanks