Sunnybrook 27 FKS Slide Out doesn't work

I had slide power problems on my TT, meaning also no power, unrelated brand. Turned out my issue was a fouled ground connection of the slide switch. The slide switch ground was connected to the frame directly below where the switch was. I was able to locate the fouled ground by systematically working backwards from the batteries testing all points independently on the 12V + wiring while using the frame as a separate ground. Then ultimately found that the ground used for the slide switch was fouled and needed to be removed, cleaned, greased and tightened. No problems since then.

Just a FYI for something to look into.

I would look around the motor... for a in-line fuse.. also the switch could be bad.. or the resettable fuse is bad.

my older coachman.. a resettable is behind the front frame of trailer and an in-line fuse at the slide motor.. and BOTH are for the slide motor power.

There may be a fuse or bad circuit breaker near the battery.

We had a 27FKS. It was an older model. There was a hand crank and if I remember, there is a place under the stairs where you use the crank.

Also you might ask this question on www.myrvtalk.com where there are more SB owners.
I have that same model and believe there is a manual connection to the gearing under the slide that is used to manually crank in the slide. Never had to do it so can't tell you more.