390 Express electrical problem

D

dantheman

Member
May 17, 2009
102
Rochester NY
Boat Info
1989 390 Express
Engines
454's
The other night, the power vent stopped working, then yesterday, the 110v outlets on the port side stopped working too. I tried turning off all power to the boat, switching power selector switch from circut 1, to 2, to generator, but nothing's working for me, any idea's? Thanks, Dan
 
dantheman said:
The other night, the power vent stopped working, then yesterday, the 110v outlets on the port side stopped working too. I tried turning off all power to the boat, switching power selector switch from circut 1, to 2, to generator, but nothing's working for me, any idea's? Thanks, Dan
Click to expand...

Did you try to reset the GFCI receptacle in the bathroom?
 
Looks like a coincidence and Ken idea of the GFCI might be right on the AC side...I do not know about the power vent though.
Jimmy, I guess Danthe is speaking about the power vents (extractors) we have in the galley and in the head.
 
Pietro said:
Looks like a coincidence and Ken idea of the GFCI might be right on the AC side...I do not know about the power vent though.
Jimmy, I guess Danthe is speaking about the power vents (extractors) we have in the galley and in the head.
Click to expand...

The galley and head power vents are on a separate 12 volt DC breaker. The GFCI outlet circuits are wired out of the 120 volt AC panel. Open up the AC/DC panel and check for power leaving these particular breakers. You are reporting AC & DC loss of power issues at the same time. Perhaps you have a lot of loose connections back there that require immediate attention. :huh:
 
Gentlemen, Thanks! the 110 problem was the gfci breaker in the bathroom, still have to investigate why the power vent isn't working, just wanted to pop in and say thanks, Have to go enjoy boating for a while. life is tough. thank you, thank you, thank you..
 
My power vents didn't work when I bought the boat, and I didn't care...
As I mentioned, they're nothing but bilge blowers with the ductwork run to the galley and the other to the head. The blowers are located in the area of the side engine room vents (port side for the head, stbd. for the galley. You need to pull the cockpit side panels for access.

My money sez the blowers are bad. They're cheap to replace, the lack of easy access is the bigger issue.
 
tobnpr said:
My power vents didn't work when I bought the boat, and I didn't care...
As I mentioned, they're nothing but bilge blowers with the ductwork run to the galley and the other to the head. The blowers are located in the area of the side engine room vents (port side for the head, stbd. for the galley. You need to pull the cockpit side panels for access.

My money sez the blowers are bad. They're cheap to replace, the lack of easy access is the bigger issue.
Click to expand...

My port side power vent is accessible via an access panel in the salon corner cabinet. I have never seen the stb. blower though and I hope that I never have to.
 
Well, I found the vent blower, on the 89, open the sliding door under the drivers seat, and inside there's an access panel facing downward, in there was the blower. I had to take off the sliding doors to reach in there, what a pain. It is actually bad cause I hooked it up to 12volts and got nothing. I looked around the Internet for the same blower (mayfair 5412) and the first one i found was $68.00. there's gotta be a cheaper blower somewhere. I do need this because I live on the boat all summer and need air, specialy when my other half is here, thank's for help. I'll keep looking for the port blower. (ten minutes later).. I just found the port side, it's next to the rear air conditioning controls behind the access panel, much easier to get at, I wish I would have found that one sooner, damn.
 
Last edited:
dantheman said:
Well, I found the vent blower, on the 89, open the sliding door under the drivers seat, and inside there's an access panel facing downward, in there was the blower. I had to take off the sliding doors to reach in there, what a pain. It is actually bad cause I hooked it up to 12volts and got nothing. I looked around the Internet for the same blower (mayfair 5412) and the first one i found was $68.00. there's gotta be a cheaper blower somewhere. I do need this because I live on the boat all summer and need air, specialy when my other half is here, thank's for help. I'll keep looking for the port blower. (ten minutes later).. I just found the port side, it's next to the rear air conditioning controls behind the access panel, much easier to get at, I wish I would have found that one sooner, damn.
Click to expand...

Your port blower is in the same location as mine. Thanx for locating the stb one for me. I hope that I never have to work on that one. That is a real tight spot for sure, but I have a scrawny little bilge rat a few slips over that could handle that chore a whole lot better that me.

regards, Ken
 
Dan: Power vent is 12 volts. Seperate system from the 120 volt system. Did you check your GFI circuit on the port side 120 volt system? My reset button is on the outlet in the head for the port side and on the coffee maker outlet on the starbord side. Press the trip and then reset button to see if that resets your 120 volt circuit. Did both the power vents (galley and head) quit or just one? Stegve
 
reallybigboat said:
Dan: Power vent is 12 volts. Seperate system from the 120 volt system. Did you check your GFI circuit on the port side 120 volt system? My reset button is on the outlet in the head for the port side and on the coffee maker outlet on the starbord side. Press the trip and then reset button to see if that resets your 120 volt circuit. Did both the power vents (galley and head) quit or just one? Stegve
Click to expand...

Please see post #7
 
reallybigboat said:
Dan: Did both the power vents (galley and head) quit or just one? Stegve
Click to expand...

The port side was dead when I bought the boat in 2006. I ordered a Jabsco blower yesterday, but it's only rated for 1000 hours. The port side, which is much easier to replace, will now be the one used to vent out at night (I'll put the new blower there), that should last about 166 nights @ 6 hrs per night (one season)then I'll get another one for the stb side and just use it to vent while cooking, that one is a serious pain in the butt to replace. Is it possible that engine compartment fumes, batteries, holding tank, etc, could be drawn in by the power vent??, I've never smelled any of that but I'm thinking a fresh air intake might be good.

Electrical Doctor, Thanks for telling me where the port side blower is, for some reason, I was looking under the cushions, not where you said in post 9, Thanks

It just occured to me, if i were to give up the stbd side blower, that vent hole could be used as a fresh air intake, Doh.. now I know why I ordered only one.
 
Last edited:
dantheman said:
The port side was dead when I bought the boat in 2006. I ordered a Jabsco blower yesterday, but it's only rated for 1000 hours. The port side, which is much easier to replace, will now be the one used to vent out at night (I'll put the new blower there), that should last about 166 nights @ 6 hrs per night (one season)then I'll get another one for the stb side and just use it to vent while cooking, that one is a serious pain in the butt to replace. Is it possible that engine compartment fumes, batteries, holding tank, etc, could be drawn in by the power vent??, I've never smelled any of that but I'm thinking a fresh air intake might be good.

Electrical Doctor, Thanks for telling me where the port side blower is, for some reason, I was looking under the cushions, not where you said in post 9, Thanks

It just occured to me, if i were to give up the stbd side blower, that vent hole could be used as a fresh air intake, Doh.. now I know why I ordered only one.
Click to expand...

What is the amperage draw on your new blower? If you just want to draw in some fresh air and to circulate it, you might consider using something like a computer fan that has a very low current draw. I have a friend that did this to his boat. He used a 3" holesaw to make a hole through the side of his boat and attached the computer fan to the hull with a screen between the fan and the hull. He went to West Marine and purchased a clam shell fitting and fastened it to the exterior of the hull facing to the aft. I have often considered doing this as well. I would probably locate it in the front cabin behind one of the sliding doors of the hanging locker over one of the port hole windows. My windows are fixed shut, so I cannot introduce any fresh air without opening a deck hatch.

~Ken
 
Why not one of these then?

N20030-CMYK-99.jpg
 
electricaldoctor said:
What is the amperage draw on your new blower? If you just want to draw in some fresh air and to circulate it, you might consider using something like a computer fan that has a very low current draw. I have a friend that did this to his boat. He used a 3" holesaw to make a hole through the side of his boat and attached the computer fan to the hull with a screen between the fan and the hull. He went to West Marine and purchased a clam shell fitting and fastened it to the exterior of the hull facing to the aft. I have often considered doing this as well. I would probably locate it in the front cabin behind one of the sliding doors of the hanging locker over one of the port hole windows. My windows are fixed shut, so I cannot introduce any fresh air without opening a deck hatch.

~Ken
Click to expand...

It was 5 or 6 amp 12v. I do like the computer fan idea, especially since I probably have 30 or 40 of them laying around, already ordered the new blower tho. I was going parallel to 10 foot rollers on the way to the Islands and had water coming in the fixed windows, wouldn't an opening in the hull possibly introduce more water to the interior? there probably is a way to fasten one to the vent hose coming out of the galley or the head tho. Thanks for the idea!
 
Last edited:
You must log in or register to reply here.

Forum statistics

Threads
113,279
Messages
1,429,946
Members
61,150
Latest member
Wonderball2Swilm
Back
Top