Yammy Trim Switch Failure

A little help please....

My power trim switch on the throttle handle of my Yamaha 704 Remote
control has failed. It will not trim up. I checked the orginal switch
with an ohm meter and it was reading 50 ohms when pressed in the "Up"
position and dead short when in the "down" position. I assumed that the
switch..which was 5 years old had just become resistive. I ordered a
new switch at a dealer....$60 worth and installed the new switch. I
installed the new switch, tested it and the motor trimmed up fine.
So..off to the lake! As soon as I'm in the water...I try to trim the
motor up and it isn't working...same problem! I haven't removed the new
switch to check but I suspect that it has similar resistive
characteristics.
The switch is a single pole double throw type switch. I measured
voltages on the wires going to the switch and there is +12 volts on the
associated leads to the up and down motion and 0 volts on the 3rd wire.
This indicates that the switch takes the voltage "low" to make the
pump turn on in the proper direction. I'm thinking that something is
causing the Up switch contact to burn because its trying to pull to much
current through the switch. Anybody had any experience with this problem?

thanks,
Bill Durham

Ps....the switch on the motor trims it up just fine..its just the remote
that is failing.

Sounds like a pinched, corroded or loose wire. When you installed the new switch you wiggled the wire and it worked for a moment.
I'd trace or replace the wires to the trim motor from the remote switch. Check for corroded connections at both ends first though.
Bill P.
================================================== ==================

"Bill Durham" wrote in message ...
A little help please....

My power trim switch on the throttle handle of my Yamaha 704 Remote
control has failed. It will not trim up. I checked the orginal switch
with an ohm meter and it was reading 50 ohms when pressed in the "Up"
position and dead short when in the "down" position. I assumed that the
switch..which was 5 years old had just become resistive. I ordered a
new switch at a dealer....$60 worth and installed the new switch. I
installed the new switch, tested it and the motor trimmed up fine.
So..off to the lake! As soon as I'm in the water...I try to trim the
motor up and it isn't working...same problem! I haven't removed the new
switch to check but I suspect that it has similar resistive
characteristics.
The switch is a single pole double throw type switch. I measured
voltages on the wires going to the switch and there is +12 volts on the
associated leads to the up and down motion and 0 volts on the 3rd wire.
This indicates that the switch takes the voltage "low" to make the
pump turn on in the proper direction. I'm thinking that something is
causing the Up switch contact to burn because its trying to pull to much
current through the switch. Anybody had any experience with this problem?

thanks,
Bill Durham

Ps....the switch on the motor trims it up just fine..its just the remote
that is failing.

....might not have been the trim switch....check the relays for the trim
motor said Huck

"Bill Durham" wrote in message
...
A little help please....

My power trim switch on the throttle handle of my Yamaha 704 Remote
control has failed. It will not trim up. I checked the orginal switch
with an ohm meter and it was reading 50 ohms when pressed in the "Up"
position and dead short when in the "down" position. I assumed that the
switch..which was 5 years old had just become resistive. I ordered a new
switch at a dealer....$60 worth and installed the new switch. I installed
the new switch, tested it and the motor trimmed up fine. So..off to the
lake! As soon as I'm in the water...I try to trim the motor up and it
isn't working...same problem! I haven't removed the new switch to check
but I suspect that it has similar resistive characteristics.
The switch is a single pole double throw type switch. I measured voltages
on the wires going to the switch and there is +12 volts on the associated
leads to the up and down motion and 0 volts on the 3rd wire. This
indicates that the switch takes the voltage "low" to make the pump turn on
in the proper direction. I'm thinking that something is causing the Up
switch contact to burn because its trying to pull to much current through
the switch. Anybody had any experience with this problem?

thanks,
Bill Durham

Ps....the switch on the motor trims it up just fine..its just the remote
that is failing.

Huck Palmatier wrote:
...might not have been the trim switch....check the relays for the trim
motor said Huck

Huck,

by chance, do you know where the relay is located?

thanks,
BD

Wouldn't the relay on the motor control both switches? If I'm not mistaken,
it probably controls the pump, not the switch.

"Huck Palmatier" wrote in message
news:7llPd.662$DG5.273@lakeread07...
...might not have been the trim switch....check the relays for the trim
motor said Huck

"Bill Durham" wrote in message
...
A little help please....

My power trim switch on the throttle handle of my Yamaha 704 Remote
control has failed. It will not trim up. I checked the orginal switch
with an ohm meter and it was reading 50 ohms when pressed in the "Up"
position and dead short when in the "down" position. I assumed that the
switch..which was 5 years old had just become resistive. I ordered a
new
switch at a dealer....$60 worth and installed the new switch. I
installed
the new switch, tested it and the motor trimmed up fine. So..off to the
lake! As soon as I'm in the water...I try to trim the motor up and it
isn't working...same problem! I haven't removed the new switch to check
but I suspect that it has similar resistive characteristics.
The switch is a single pole double throw type switch. I measured
voltages
on the wires going to the switch and there is +12 volts on the
associated
leads to the up and down motion and 0 volts on the 3rd wire. This
indicates that the switch takes the voltage "low" to make the pump turn
on
in the proper direction. I'm thinking that something is causing the Up
switch contact to burn because its trying to pull to much current
through
the switch. Anybody had any experience with this problem?

thanks,
Bill Durham

Ps....the switch on the motor trims it up just fine..its just the remote
that is failing.

http://makeashorterlink.com/?W3465167A


"Bill Durham" wrote in message
...
Huck Palmatier wrote:
...might not have been the trim switch....check the relays for the trim
motor said Huck

Huck,

by chance, do you know where the relay is located?

thanks,
BD

Huck Palmatier wrote:

http://makeashorterlink.com/?W3465167A


"Bill Durham" wrote in message
...

Huck Palmatier wrote:

...might not have been the trim switch....check the relays for the trim
motor said Huck


Huck,

by chance, do you know where the relay is located?

thanks,
BD



Guys,

Problem solved. I didn't think it was the relays since the switch
mounted on the motor worked fine. The remote switch has a pigtail about
3 feet long that has the little bullet type quick disconnect connectors
on it. These quick disconnects plug into matching connectors that come
out of a multipin connector that is the harness that goes back to the
engine. In this multi pin connector, the blue wire, which is the "Up"
control wire...the contact had been pushed back within the connector and
wasn't making good contact. I used some contact cleaner on all of the
connections, pushed the contact back into the connector, plugged it back
together and violo! Up trim.

thanks for all of your responses....by the way, I priced that relay
assembly from my local dealer $207!

BD

You wouldn't need a relay assembly Bill, just a new relay or two (a few
bucks); Pick up a spare relay or two anyway, sooner or later one will go on
ya. It's a b-tch when you're up the lake & you can't trim your motor...

Warren

"Bill Durham" wrote in message
...
Huck Palmatier wrote:

http://makeashorterlink.com/?W3465167A


"Bill Durham" wrote in message
...

Huck Palmatier wrote:

...might not have been the trim switch....check the relays for the trim
motor said Huck


Huck,

by chance, do you know where the relay is located?

thanks,
BD



Guys,

Problem solved. I didn't think it was the relays since the switch
mounted on the motor worked fine. The remote switch has a pigtail about
3 feet long that has the little bullet type quick disconnect connectors
on it. These quick disconnects plug into matching connectors that come
out of a multipin connector that is the harness that goes back to the
engine. In this multi pin connector, the blue wire, which is the "Up"
control wire...the contact had been pushed back within the connector and
wasn't making good contact. I used some contact cleaner on all of the
connections, pushed the contact back into the connector, plugged it back
together and violo! Up trim.

thanks for all of your responses....by the way, I priced that relay
assembly from my local dealer $207!

BD

There are two relays Jerry, one for up & one for down. They are merely
circuit completers between your switch(es) & your tilt/trim motor. Hyro
jackplates have two as well...been through a bunch of them puppies, they
don't like to get wet...

Warren

"Jerry Barton (NervisRek)" wrote in message
...
Wouldn't the relay on the motor control both switches? If I'm not
mistaken,
it probably controls the pump, not the switch.

"Huck Palmatier" wrote in message
news:7llPd.662$DG5.273@lakeread07...
...might not have been the trim switch....check the relays for the trim
motor said Huck

"Bill Durham" wrote in message
...
A little help please....

My power trim switch on the throttle handle of my Yamaha 704 Remote
control has failed. It will not trim up. I checked the orginal
switch
with an ohm meter and it was reading 50 ohms when pressed in the "Up"
position and dead short when in the "down" position. I assumed that
the
switch..which was 5 years old had just become resistive. I ordered a
new
switch at a dealer....$60 worth and installed the new switch. I
installed
the new switch, tested it and the motor trimmed up fine. So..off to
the
lake! As soon as I'm in the water...I try to trim the motor up and it
isn't working...same problem! I haven't removed the new switch to
check
but I suspect that it has similar resistive characteristics.
The switch is a single pole double throw type switch. I measured
voltages
on the wires going to the switch and there is +12 volts on the
associated
leads to the up and down motion and 0 volts on the 3rd wire. This
indicates that the switch takes the voltage "low" to make the pump
turn
on
in the proper direction. I'm thinking that something is causing the
Up
switch contact to burn because its trying to pull to much current
through
the switch. Anybody had any experience with this problem?

thanks,
Bill Durham

Ps....the switch on the motor trims it up just fine..its just the
remote
that is failing.

go-bassn wrote:
You wouldn't need a relay assembly Bill, just a new relay or two (a few
bucks); Pick up a spare relay or two anyway, sooner or later one will go on
ya. It's a b-tch when you're up the lake & you can't trim your motor...

Warren

Warren,


Interesting...I didn't bother to remove the assembly but I gather from
what you are suggesting is the relay's are replacable in the assembly.
I'll definetly keep that in mind. I sold electronic parts for 10 years
so if they are available I can find one!

thanks again,
BD