I have a 2007 Regal 2665. Depth readings on the Raymarine A65 Chartplotter/Fishfinder are shown accuratley at speeds below planing (3000 rpm). When the boat reaches planing speed, the depth reading on the display goes blank. Thank you.
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Re: No depth reading while on plane.
Depending on your transducer type, you may have a liquid filled type that simply needs refilling. If this is the case check for leaks and get it redone. If not it could be transducer placement or cavitation under the hull.
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The transducer MUST be in contact with the water for it to operate properly. Check and make sure (if it is a thru-hull) that the ducer isn't in the air when you're planing. I've read that wiping the transducer with Dawn dish detergent speeds up the "wetting" of the transducer and makes for a better contact with the water.
Likely your DSM25 (that little box that connects the transducer to the display) will need to be rebuilt. The red LED is saying that there is an internal fault with the unit. You would need to send the unit in for repair through Raymarine (as there really is not anyone else who can do it), and they would have to replace the main circuit card in the box. I believe that they are charging either $150 or $175 to repair those now... but likely the only way you will get that one to work again.
If the transducer is not correctly mounted this may happen due to air, etc. If the unit never gives a depth reading that looks like dashes
( - - ) then there is likely nothing wrong with it aside from the transducer placement.
Probably a bad printed circuit board, just had to send mine in to have it repaired. When I hit the power button, I did hear a beep, but then nothing displayed. Mine was still under warrenty, so don't know the repair cost if yours is not.
My Raymarine A65 was so bad in daylight I could not read the screen. Used Never Dull polish from ACE hardware, similar to Brasso, and it took every scratch and cloudy mark off the screen. The can documentation includes glass as one of the items it?s safe to use on. Looks new again, Good Luck, Paul
First do a factory reset and determine that all the setting are correct. You can get this info from the manual. Remember you will loose any saved way points when you do the reset. If that does not sort you out;Remove transducer from transom mount and duck tape it to a broom stick so that the transducer face is facing down. With the boat standing still in calm water and the ducer hooked to the DSM25 push it below the water and see if it see bottom on 50khz.The idea here is to get the ducer in another location to see that it is not getting reflections of the boat. 50Khz is very prone to reflecting of stuff around it. If you still have a problem I would send the ducer and DSM25 unit back under warrant .No need to send A65 back it should not have a problem.
jmiller, Sound like your getting turbulence from the hull or your angle is allowing cavitation under the transducer. Look under the hull where the traducer is mounted and look for a part that has no obstruction including saltwater pickups, hull relieves, etc. The other thing to check is to take a strait edge on the bottom of the transducer to ensure the angle is slightly forward than the hull. Bob
Remove all wiring from 4000 head, hook up only 12V, if seatalk fail continues, it is the head. if seatalk fail goes away, hook in instruments one by one until the bad head is found. Seatalk is 12V red, Ground Screen(bare wire) and Data yellow (pulsing voltage).
It is unlikely the problem is in the A65 screen.....most likely it is an issue with the paddlewheel itself, its circuit in the depth/speed transducer, or least likely, in the DSM25 sounder module.
Both the log and the trip functiions are read from the paddle-wheel sensor of the connected DSM25 sounder module and transducer.
1. Make sure you have a DSM25 sounder module and transducer with a paddle wheel (the A65 is available without the DSM25 option.)
Double check the connections between the DSM25 and the A65, as well as the transducer connection to the A65. There is an indicator light on the DSM25 to confirm it is on.
2. Make sure the paddle wheel turns freely. They tend to get fouled easily with debris and growth.
3. Make sure the A65 is giving to a reading for SPEED when underway or when having a buddy spin the paddlewheel by hand. Do not confuse SPEED with SOG. SPEED is from the paddlewheel.....SOG (Speed over ground) comes from your GPS sensor and is not used by A65 for log or trip purposes.
If you get npo speed reading at all the paddle wheel may be defective or the depth/speed transducer may be defective. See your dealer about a replacement.