Archive of the former Yahoo!Groups mailing list: MOTM

Thomas White writes:
I need to apply the Hendry and Bradley mods anyhow.

Larry Hendry:
Speaking of Hendry mods: Sometimes you cannot see the forrest for the
trees. I started my Time Machine mods with the thought of protecting the
two inputs from negative voltage separately. My first shot at the delay CV
mod didn't work so well but the one to protect the external mod CV input
did. So, I ended up changing the circuit for the delay CV mod to the one
that is published on my website. But, what didn't hit me until Scott Juskiw
was kind enough to point it out is that my delay CV negative input voltage
protection modifiction actually protects both inputs. Doh !! (slapping my
head like Homer Simpson),

So, if you have already modified your Time Machine, you now are double
protected on the mod CV input. If you have not, sounds like you can skip
the second part that calls for the changing of R57 and R58 with the
piggyback diode. I will change the website information to reflect this when
I get a chance.

Thanks to Scott for helping me see the light.

Larry Hendry