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GARMIN has a problem on their hands!!!!

Old 07-24-2005, 04:04 PM
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Default GARMIN has a problem on their hands!!!!

Please be aware, there is a problem with the Garmin 198c. As of now it seems to be all of the units. If your thinking of buying one, make sure there is a return policy and test it out before you run the wires including the transducer!!!!

There are many others (including other forums) that are having the "Sonar Disconnected" problem. To recap the problem, every time you key up your VHF radio (fixed mount or handheld) the sonar screen goes blank and says "Sonar Disconnected". You have to power cycle the unit to get it to work again.

__________________________________________________ __________________________________________________ _____________



Guys, I have been dealing with this problem for two weeks now. I have posted on a few other fourms and there are others that are having the same problem.

My dealer did the initial install of the 198c so I took it back to them to see if they could fix the problem. They worked on it for three days (even talked to Garmin) and they can't solve the "Sonar Disconnected" problem. I got my boat back and decided to try a few things my self and no luck. I even exchanged the unit at West Marine.

The new unit did not fix the problem.

I sopke with the Garmin rep at my local West Marine store and he wanted to try and solve the problem. So I took my boat to the store and we spent 2 hours trying diferent units, diferent transducers, different VHF radios, handheld vhf radios, double and triple checked the wiring, nothing solved the problem.

We finally tried another model (178c) and it worked properly.

As of now it looks like there is a defect in the Garmin 198c model.

Garmin will not admit to a problem yet but there going to have to do something soon.

I will be calling Garmin tomorrow as well as the local rep. to try and get to the bottom of this.
Old 07-24-2005, 07:01 PM
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Default Re: GARMIN has a problem on their hands!!!!

Keep us informed on this....the 192/8 should not be that much different from the 182/8....other than different screen and additional memory. It would be interesting to install a 188 in your boat to see if it has the same problem.
Old 07-24-2005, 09:00 PM
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Default RE: GARMIN has a problem on their hands!!!!

Like I mentioned on another thread, this is what we call a classic EMI
shielding problem. By now, Garmin is subjecting this unit to a battery
of EMI tests. They WILL find the problem and my guess is that they will
replace all the units. The probable reason they havnt done this already
is because they do not yet have the solution so they can't send you the
replacement units. This is probably very embarassing for the engineers
involved.

JP
Old 07-24-2005, 09:04 PM
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Default Re: GARMIN has a problem on their hands!!!!

As noted in another thread, I'm having the same issue. Going to do my own troubleshooting tomorrow, but based on what I've read thus far, I'm not optimistic.
Old 07-24-2005, 09:08 PM
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Default Re: GARMIN has a problem on their hands!!!!

swo - 7/24/2005 9:04 PM

As noted in another thread, I'm having the same issue. Going to do my own troubleshooting tomorrow, but based on what I've read thus far, I'm not optimistic.
Try wrapping the enitre unit, including the cable connector and well down the cable
with Aluminum foil. This:

http://cgi.ebay.com/ws/eBayISAPI.dll...Name=WDVW&rd=1

would be better, but the foil may work.

JP
Old 07-24-2005, 11:14 PM
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Default Re: GARMIN has a problem on their hands!!!!

Think Tweiss - 7/24/2005 8:01 PM

Keep us informed on this....the 192/8 should not be that much different from the 182/8....other than different screen and additional memory. It would be interesting to install a 188 in your boat to see if it has the same problem.
Will this also affect my 192C if I decide to hook up the sonar option?

Rob
Old 07-25-2005, 06:09 AM
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Default RE: GARMIN has a problem on their hands!!!!

Just a thought. ;? When you 'key' the VHF mike; you're using upwards of 7 amps of power at 25 watts. Is the Garmin on the same circuit? Is the power cable from the battery the right size for the load? As a test, rig a individual line to the Garmin directly from the battery; see if your problem still exists. You say it happens with a 'handheld' too! Hummm... Good luck.
Old 07-25-2005, 06:27 AM
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Default RE: GARMIN has a problem on their hands!!!!

Mumblerone - 7/25/2005 7:09 AM

Just a thought. ;? When you 'key' the VHF mike; you're using upwards of 7 amps of power at 25 watts. Is the Garmin on the same circuit? Is the power cable from the battery the right size for the load? As a test, rig a individual line to the Garmin directly from the battery; see if your problem still exists. You say it happens with a 'handheld' too! Hummm... Good luck.
This is a good point. My 182c would reset every time I started the engine. This would be from a voltage drop. Once I installed a "house bank" (of batteries) and moved the 182c to this bank I no longer had the problem. I don't have a problem with the 182c and the VHF even though they are on the same battery and feed from that battery.

Using a handheld VHF (powered by it's own batteries, not an adapter powered by the boat) is a good way to isolate the problem. Repair or replacement should be covered under warranty.
Old 07-25-2005, 07:36 AM
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Default Re: GARMIN has a problem on their hands!!!!

OK, broke out my handheld (5W), fired up the 198C, and keyed the handheld. No effect until I got the handheld antenna to within about a foot of the unit and then keyed it--then the exact same error as keying the mounted VHF--sonar drops out, alarm sounds, and 198C starts looking for satellites.

Seems pretty conclusive to me that it's an EMI issue of some sort, and not a voltage issue. Will be calling Garmin when I get a chance later this morning.
Old 07-25-2005, 01:37 PM
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Default Re: GARMIN has a problem on their hands!!!!

I just installed my 198C last week but use a Lowrance as my primary depth finder. Anyway, I just got back from the boat and tried to replicate the poblem described. It worked perfectly.
The tranducer cables are chased through the same conduit, the VHF antenna lead enters through a diggerent conduit into the console.
Sounds to me like you have a voltage drop problem. Put a digital volt meter at the terminal block for the Garmin and key the mike. What happens?
Old 07-25-2005, 05:35 PM
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Default Re: GARMIN has a problem on their hands!!!!

Its not a voltage issue. Problem happens with a handheld VHF and when the fixed mount VHF is wired to a totally different battery.

Trust me, Between me, my dealer, the local West Marine store, and Garmin Rep, we have tried EVERYTHING you can think of.

It still looks like its an issue with the 198c unit.

Bill
Old 07-25-2005, 07:10 PM
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Default Re: GARMIN has a problem on their hands!!!!

Good luck, sounds like you've got enough experts involved.
Old 07-25-2005, 07:22 PM
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Default Re: GARMIN has a problem on their hands!!!!

i am inclined to believe phillipj1 and swo are right on - Electronmagnetic radiation. although it looks hoaky, if wrapping the unit in aluminum foil solves it (wrap it completely, with only a small opening to see the screen), you know Garmin did not do a proper job in engineering effective shielding during the design and assembly of the unit.
Old 07-25-2005, 07:30 PM
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Default Re: GARMIN has a problem on their hands!!!!

The interference might be being picked up by the transducer or it's cable or even the power leads to the unit, not just by the unit itself. If there's the retailer and manufacturer's rep involve, the first thing to do is to swap out the unit for a "known good" one.
Old 07-25-2005, 07:31 PM
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Default Re: GARMIN has a problem on their hands!!!!

Oops!
Old 07-25-2005, 07:34 PM
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Default RE: GARMIN has a problem on their hands!!!!

Just got the 198C installed on new boat. No fixed VHF yet but will try my hand held tomorrow to see what happens.
Old 07-26-2005, 12:34 PM
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Default Re: GARMIN has a problem on their hands!!!!

Ron,

Been there done that. While I was at my local West Marine we swapped out every (and I mean EVERY) part involved, with known working pieces. Still has the problem.

Bill
Old 07-26-2005, 06:15 PM
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Default RE: GARMIN has a problem on their hands!!!!

I find it hard to believe that Garmin's engineers wouldn't test in the real environment of a boat environment.....they certainly know that their devices will be mounted next to fishfinders, VHF's, autopilots. If this turns out to be an engineering problem, then I would be very very suspicious of anything that Garmin produces after this....it's just too basic.

Let's hope that there is some rationale explaination that would indicate that Garmin was professional in their testing and development. Sounds like there will be a great deal of damage control needed on this one if the informal testing turns out to be true. Couple it with the screen coating problem that continues on their color screens and it would almost appear that Garmin is actually proactively working to destroy the reputation they've earned over many years.
Old 07-27-2005, 12:07 PM
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Default Re: GARMIN has a problem on their hands!!!!

Just an update:

I spoke with my local West Marine store yesterday and they can duplicate the problem in the store using the display unit. They also called their repair/ install faculity in FL and they also could duplicate the problem. A Garmin field rep is due at the store today to see the problem.

Peter at West marine is going to keep me updated.

After learning of this, I called Garmin and they still insist they are not aware of any problems.

My 198c is being returned to West Marine tomorrow and will be replaced with a 3005c.
Old 07-27-2005, 12:28 PM
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Default Re: GARMIN has a problem on their hands!!!!

Does anyone know if this problem wil affect a 192C if sonar is hooked up?

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