Reply
 
Thread Tools Search this Thread
 
Old 20 October 2011, 03:14   #11
RIBnet supporter
 
Pikey Dave's Avatar
 
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 7,590
RIBase
Could be the bond between the hull & txer that's starting to come apart. Try wiggling the transducer & see if it's loose or comes off. It will need cleaning up & rebonding. Epoxy is good for this.
__________________
Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4: See rule#5
Pikey Dave is offline   Reply With Quote
Old 20 October 2011, 03:34   #12
Member
 
Leapy's Avatar
 
Country: UK - England
Town: Sheepy Parva
Boat name: Sadly Sold
Length: no boat
Join Date: Sep 2008
Posts: 1,728
Quote:
Originally Posted by jyasaki
Ditto that it sounds like it's losing lock. Is the hull dirty, by chance? Or has the head unit been switched to a single mode rather than auto?
jky...the hull's not dirty but I did notice when playing with the sonar displays that only the 200MHz ident was shown. If it was set to 'dual' I guess I should have seen 200/50MHz (think it's 50 from memory). I'll check shortly...
__________________

__________________
Leapy is offline   Reply With Quote
Old 20 October 2011, 03:36   #13
Member
 
Leapy's Avatar
 
Country: UK - England
Town: Sheepy Parva
Boat name: Sadly Sold
Length: no boat
Join Date: Sep 2008
Posts: 1,728
Quote:
Originally Posted by Pikey Dave
Could be the bond between the hull & txer that's starting to come apart. Try wiggling the transducer & see if it's loose or comes off.
PD...tried that, it's well and truly stuck
__________________
Leapy is offline   Reply With Quote
Old 20 October 2011, 03:39   #14
Member
 
Leapy's Avatar
 
Country: UK - England
Town: Sheepy Parva
Boat name: Sadly Sold
Length: no boat
Join Date: Sep 2008
Posts: 1,728
Quote:
Originally Posted by Pikey Dave
Could be the bond between the hull & txer that's starting to come apart. Try wiggling the transducer & see if it's loose or comes off
PD...tried that, it's well stuck
__________________
Leapy is offline   Reply With Quote
Old 20 October 2011, 11:31   #15
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
Quote:
Originally Posted by Leapy View Post
but I did notice when playing with the sonar displays that only the 200MHz ident was shown. If it was set to 'dual' I guess I should have seen 200/50MHz
50kHz/200kHz. You're not running a microwave

200kHz should be what's in use in shallower water. Less penetration but greater sensitivity. Lower freq for deeper water. So that's not it.

jky
__________________
jyasaki is offline   Reply With Quote
Old 20 October 2011, 12:26   #16
Member
 
Leapy's Avatar
 
Country: UK - England
Town: Sheepy Parva
Boat name: Sadly Sold
Length: no boat
Join Date: Sep 2008
Posts: 1,728
Quote:
Originally Posted by jyasaki
50kHz/200kHz. You're not running a microwave
Microwave...:-) I knew that...

So, been out again today...all the settings on the 550s that can be at 'Auto' are at 'Auto' and the transponder is well and truly stuck down. The hull is squeaky clean. The 'Auto' setting is where the 550s has always been.

Tried various manual settings: no change.

Changed frequencies: no change.

The 'Gain' was set at 70%...I upped this to 90% - thinking gain might equate to signal strength - and all was fine for about 30 mins and then flashing mode came back and nothing I did could take it out of that mode, including a restart.

So...no further forward. One other change point comes to mind though. The transponder is on centreline in the transom well. Since last use in August we've had a full length keel guard fitted and so the transponder now has to 'see' through the keelguard. I know the keelguard will attenuate the signal but we're not the only RIB in the world with a full length keel guard so I can't think this is the issue.

I'm batting a variation of this post off to Garmin Tech Support to see what they say. Still interested in any other opinions though please
__________________
Leapy is offline   Reply With Quote
Old 20 October 2011, 12:29   #17
Member
 
Country: UK - England
Town: Plymouth
Length: 6m +
Join Date: Mar 2011
Posts: 2,693
Shame you don't know anybody will similar rig who could try your head on their transducer. That would quantify the fault and help narrow it down for you. At least then you'd know where to be looking to fix the problem.

Let's hope tech have a solution

Peter ~ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007
__________________
Boats&Outboards is offline   Reply With Quote
Old 20 October 2011, 13:12   #18
Member
 
biffer's Avatar
 
Country: UK - England
Town: swanwick/hamble
Boat name: stormchaser
Make: custom rib
Length: 8m +
Engine: inboard/diesel
Join Date: Aug 2007
Posts: 3,848
Free up you're pm box pete

sent from a remote device
__________________
biffer is offline   Reply With Quote
Old 20 October 2011, 13:16   #19
Member
 
Country: UK - England
Town: Plymouth
Length: 6m +
Join Date: Mar 2011
Posts: 2,693
I'm trying. I wish I staggered these now it's gone crazy

Peter ~ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007
__________________
Boats&Outboards is offline   Reply With Quote
Old 20 October 2011, 14:22   #20
RIBnet supporter
 
Erin's Avatar
 
Country: UK - Channel Islands
Town: A large rock
Boat name: La Frette
Make: Osprey Vipermax
Length: 6m +
Engine: 200 Suzzy
Join Date: May 2004
Posts: 2,830
Quote:
Originally Posted by Leapy View Post
Still interested in any other opinions though please
I presume you've checked the wiring and undone and remade the connections into the back of the display unit.
Erin is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 19:58.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.