Simrad IS15

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I have a Hanse 311 that came with a Simrad IS15 instrument system on the wheel.  This no longer works.  It will not show me the depth or my boat speed.  It does get power.  It lights up and you can view all of the menu's........but it will not report back the depth or boat speed.  
To be safe I took it off the boat and tested it and the device works fine.  I was told it was my "J box" ??  So underneath the port side seats down below (next to the battery) I found the box in question.  It was a bear to unscrew this box.  I then tried to take it out of the boat and I could not.  There were 4 wires on it.  3 of which I could unscrew but the 4th was a power cable that was attached to the box and you can't remove it.  I could NOT trace the other end of this cable.  It disappeared under the batteries and floor.  Where does it go and what does it connect too?  How do I unplug it so I can take this box off of the boat and have it tested?  
Also, if my Simrad is working fine where else can the problem be?  I have my "J box" and transducer so I am guessing it is one of those?
Where else should I look for the problem?
Thanks!!

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mqh7 Members Profile Send Private Message Find Members Posts Add to Buddy List Lieutenant Commander Joined: 23 December 2003 Location: United States Status: Offline Points: 61	Post Options Post Reply Quote mqh7 Report Post Thanks(0) Quote Reply Topic: Simrad IS15 Posted: 09 August 2006 at 05:47
	I have a Hanse 311 that came with a Simrad IS15 instrument system on the wheel. This no longer works. It will not show me the depth or my boat speed. It does get power. It lights up and you can view all of the menu's........but it will not report back the depth or boat speed. To be safe I took it off the boat and tested it and the device works fine. I was told it was my "J box" ?? So underneath the port side seats down below (next to the battery) I found the box in question. It was a bear to unscrew this box. I then tried to take it out of the boat and I could not. There were 4 wires on it. 3 of which I could unscrew but the 4th was a power cable that was attached to the box and you can't remove it. I could NOT trace the other end of this cable. It disappeared under the batteries and floor. Where does it go and what does it connect too? How do I unplug it so I can take this box off of the boat and have it tested? Also, if my Simrad is working fine where else can the problem be? I have my "J box" and transducer so I am guessing it is one of those? Where else should I look for the problem? Thanks!!

Rubato Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral Joined: 12 July 2006 Location: Canada Status: Offline Points: 1806	Post Options Post Reply Quote Rubato Report Post Thanks(0) Quote Reply Posted: 09 August 2006 at 07:21
	mqh7 The basic IS15 setup has an IS15 combi unit at the helm, a transceiver unit, and the depth and speed transducers. The box you've found under the seats is no doubt the transceiver unit. The transceiver has 4 sets of cables going to it - 2 from the transducers, one to the combi unit at the helm and the other will be power. The power lead will likely connect to your breaker panel - the switch labeled instruments. Basic trouble shooting instructions can be found on the Simrad website www.simradusa.net and if you go to the downloads and manuals section you will find documents for the system. http://www.simradusa.net/index.php?option=com_docman&tas k=cat_view&gid=111&Itemid=165 If all else fails, call or email Simrad customer support and they will lead you through how to diagnose the problem. I've talked to them about the differences between the IS12 and IS15 systems and they were quite helpful. Good luck Steve

mqh7 Members Profile Send Private Message Find Members Posts Add to Buddy List Lieutenant Commander Joined: 23 December 2003 Location: United States Status: Offline Points: 61	Post Options Post Reply Quote mqh7 Report Post Thanks(0) Quote Reply Posted: 09 August 2006 at 16:21
	Steve, thank you for the information. Ok, so the power cable for the transceiver unit will plug into the breaker panel.....which is what I figured. Now, the next question I had was this......on the bottom of my boat on the Port side of the keel I have the speedometer. This only appears to measure boat speed. On the starboard side of the keel I have a flat rectangular thing…..is that the depth indicator? Or is the speed and depth in the same device? Thanks, Matt

colincooper Members Profile Send Private Message Find Members Posts Add to Buddy List Rear Admiral Joined: 23 October 2005 Location: United Kingdom Status: Offline Points: 562	Post Options Post Reply Quote colincooper Report Post Thanks(0) Quote Reply Posted: 09 August 2006 at 17:58
	Matt, almost certainly that is the depth sounder. Speed detector is a paddle wheel. Depth is a pizo sounder (a lump or plate). Rarely in the same instrument.
	Colin (owner of Hilde - a 370)

Rubato Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral Joined: 12 July 2006 Location: Canada Status: Offline Points: 1806	Post Options Post Reply Quote Rubato Report Post Thanks(0) Quote Reply Posted: 09 August 2006 at 18:54
	Separate devices as Colin says. Note that its' important not to cover the depth sounder transducer with anti fouling paint. (unlike a thread I saw elsewhere discussing putting antifouling on the paddlewheel). Steve

Muscadet Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 05 July 2004 Location: United Kingdom Status: Offline Points: 173	Post Options Post Reply Quote Muscadet Report Post Thanks(0) Quote Reply Posted: 10 August 2006 at 11:37
	Matt, The rectangular plate on the starboard side is the earthing plate. The depth sounder transducer is glued to the inside of the hull and is not visible from the outside. As the speed and depth are supplied by seperate transducers and you are getting no reading from either of them it seem unlikely that both transducers have stopped working. The problem must be between the instrument head and the tranceiver box. Is it possible you have disabled the speed and depth readings? I would check through the set up procedures in the manual and if that doesn't work get advice from Simrad before trying to remove the transceiver. Regards Alan

Popeye Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 12 September 2005 Location: Mongolia Status: Offline Points: 322	Post Options Post Reply Quote Popeye Report Post Thanks(0) Quote Reply Posted: 11 August 2006 at 09:26
	Correct : no anti-foul paint on the head of the depth transducer And, correct : anti-foul paint on the paddlewheel of the depth transducer ... it says so in the instruction manual !
	Popeye the sailorman

Rubato Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral Joined: 12 July 2006 Location: Canada Status: Offline Points: 1806	Post Options Post Reply Quote Rubato Report Post Thanks(0) Quote Reply Posted: 11 August 2006 at 19:26
	Alan, Depth transducer glued to the inside of the hull? Hmmm, the 370s and 400s coming into Vancouver using the IS12 system (not much different from IS15) is still through hull. Personally haven't heard of a depth system that doesn't go through the hull. Having said that, Matt's description of a flat rectangular thing doesn't sound like the depth transducer either. It should be an almost flush round object... Steve

Muscadet Members Profile Send Private Message Find Members Posts Add to Buddy List Captain Joined: 05 July 2004 Location: United Kingdom Status: Offline Points: 173	Post Options Post Reply Quote Muscadet Report Post Thanks(0) Quote Reply Posted: 14 August 2006 at 09:46
	Steve, It's quite common now with GRP hulls to have the depth transducer inside the hull. It is important that there is no air between the face of the transducer and the surface of the hull. So the usual options are either to glue a tube to the inside of the hull, partially filled with oil, and place the transducer in the oil bath or simply glue the transducer to the hull in a bed of epoxy. The glued option does not allow removal of the transducer, but as there are no moving parts to go wrong removal is not normally required. Regards Alan

Rubato Members Profile Send Private Message Find Members Posts Add to Buddy List Admiral Joined: 12 July 2006 Location: Canada Status: Offline Points: 1806	Post Options Post Reply Quote Rubato Report Post Thanks(0) Quote Reply Posted: 20 August 2006 at 06:39
	Alan, thanks for the info - always great to learn something new. I'm just getting back into boat ownership after 14 years and the electronics in particular have come a long way!!! Steve



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