System Monitor - bad test switch

L

Lhs3422

Member
Jan 28, 2017
36
Chesterfield, MI
Boat Info
1999 370 EC
Engines
454 Mercruiser Mag
New to me 370 EC. Been trouble-shooting an intermittent generator (gas) alarm. Generator is running fine, good water flow and oil pressure. Narrowed down problem to the test switch on the system monitor which seems to be worn. When pushed or moved, it seems loose and pops the breaker. I pulled the switch panel to look and the switch has a number of wires leading to it, which appear to be soldered in, so switching it out doesn't seem to be an option. Is there a way to disable the test switch without disabling the entire system monitor? I am no electrical expert and don't want to start cutting wires and pulling components out of the instrument panel without some clue of what I'm doing. Thanks!
 
The system monitor has nothing to do with generator alarms. It only will tell you if it is running or not. Not sure how you determined that is the issue?
 
SKybolt said:
The system monitor has nothing to do with generator alarms. It only will tell you if it is running or not. Not sure how you determined that is the issue?
Click to expand...
I'll rephrase. The alarm only sounds when the generator is started. The indicator light does come on showing that the generator's running.
 
Lhs3422 said:
I'll rephrase. The alarm only sounds when the generator is started. The indicator light does come on showing that the generator's running.
Click to expand...

Which system monitor do you have? LED's or LCD display?
 
dtfeld said:
I think this era boat is the LEDs in a panel.

edit: this version has a potted board and is not reparable.

http://www.clubsearay.com/index.php?threads/system-monitor-issues-and-repair.58151/
Click to expand...

I agree, but it can be repairable. I actually have one for sale from a while ago.

There were two models of that one. One with just a cable going to a terminal block and the other with a module of sorts that the cable goes to.

If interested: http://clubsearay.com/index.php?threads/working-led-sys-monitor.103102/

But I would consider upgrading to the an NMEA 2000 type: http://clubsearay.com/index.php?thr...nd-improve-the-sea-ray-systems-monitor.91270/
 
dtfeld said:
I think this era boat is the LEDs in a panel.

edit: this version has a potted board and is not reparable.

http://www.clubsearay.com/index.php?threads/system-monitor-issues-and-repair.58151/
Click to expand...
It is a potted board. Doesn't seem to be any way to take apart and fix/replace. The problem is with the test switch that's given up the ghost and must be shorting out, as the breaker pops when it's pushed and the switch plunger has a lot of "play". If there's nothing to lose, I guess I could remove the test switch or somehow prevent it from shorting. May lose the whole monitor panel, but it's not doing me much good as is.
 
SKybolt said:
I agree, but it can be repairable. I actually have one for sale from a while ago.

There were two models of that one. One with just a cable going to a terminal block and the other with a module of sorts that the cable goes to.

If interested: http://clubsearay.com/index.php?threads/working-led-sys-monitor.103102/

But I would consider upgrading to the an NMEA 2000 type: http://clubsearay.com/index.php?thr...nd-improve-the-sea-ray-systems-monitor.91270/
Click to expand...


Its a unicorn!! Please Capture it safely, keep it alive...
 
Update and I think the end of this for now. Played around with the the test switch and it's definitely shot and pops the breaker. For whatever reason (maybe obvious to those with the knowledge) the panel lights all function without the breaker set, but no horn. Engine alarms function normally with sound, so not affected. I'm going to live with it as is for now. A little concerned about no sound with the high water alarm, but the lights are right under my nose when running the boat. Thank you for all of the insight. Leigh
 
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