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Lowrance LST-3800 Support Question

Lowrance LST-3800 Support Question

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Question posted by richlindalogan on May 28th, 2020

Depth Reading Intermittent

Depth reading when I first start the boat is ok then as I start to move or it gets below 10 feet it go es to 1.7 feet and stays there. The temp reading is fine and tracks as it should.

Current Answers

Answer #1: Posted by Troubleshooter101 on May 28th, 2020 9:20 PM
This answer was accepted by the poster of the original question.
Troubleshooter101

Member since:
September 30th, 2015

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If your sounder is indicating the incorrect depths, do the following:
  1. If it's a new installation, verify that the transducer positioning is correct.
  2. Inspect the transducer for marine growth and damage.
  3. Verify that there are not two sounders operating close together.
  4. Inspect the transducer connectors and pins for signs of corrosion.
  5. Perform a basic cavitation check.
  6. Verify that the upper and lower depth limit settings are properly set.
  7. Inspect transducer cables for damage.

Please click the link below for reference:-https://www.boatus.com/magazine/archives/troubleshooting-fish-finders.asp


Thanks


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Related Lowrance LST-3800 Manual Pages

Installation and Operation Manual - Page 1

It can show depth in Meters or Feet, temperature in a standard 2-1/8" (54 mm) hole used by most marine equipment manufacturers. LST-3800 temperature gauge. The ...988-0064-351 LST-3800 In-Dash Digital Sonar Gauge Installation & Operation Instructions The LST-3800 is a depth and temperature gauge that comes with built-in temp sensor to receive temperature information. The 3800 is at least ...
Installation and Operation Manual - Page 2

... transducer, connect power wires to the battery and route the power/transducer cable to the boat's dash light switch. 2 Determine the location for the desired configuration. 2. Determine the ...enough cable length for the alarm buzzer and its wire route. 4. Caution: You should read over the entire installation section before drilling any holes in some other power connections, along...
Installation and Operation Manual - Page 3

...24-gauge wire and wire connectors of your boat. 3 Recommended Tools and Supplies Supplies are required to cap any of the dash, then push the LST-3800 housing through the hole in damage to ...does not have a standard 2-1/8" (54 mm) hole, you will allow you determine the location for the LST-3800, drill a 2-1/8" (54 mm) hole in the following wiring diagrams and photos. Wire nuts or electrical...
Installation and Operation Manual - Page 4

... when you want to the switch controlling the dash lights. A battery will draw 11 milliamps of about 50 milliamps. LST 3800 housing LST black wire to buzzer black wire Buzzer red wire to boat power Buzzer Power/transducer cable Transducer Red to approximately 20 milliamps, well below the recommended load limit in storage is...
Installation and Operation Manual - Page 5

... UP and DOWN buttons allow you should cut off the bare wire before taping off the ends. NOTE The LST-3800 comes with electrical tape. part number, 988-0147-582, at www.lowrance.com. LST-3800 keypad. 5 You should cover the individual wire ends - After connecting the power wires to the battery or switch...
Installation and Operation Manual - Page 6

...the default timeout duration is no exit key in the LST 3800. To modify what pages will take you first start using the up and down keys to scroll through the ...the menu will open the Timeout Menu, which has four settings: 3, 5, 7 and 10 seconds. press MENU. When you back to the Timeout menu. To cycle through the main... the Depth page by default. The menus "time out" instead.
Installation and Operation Manual - Page 7

.... Dual Display Page The dual display shows depth and temperature readings simultaneously. The default setting for Autoscroll is off automatic page rotation, but gives you would like page displays to rotate automatically, check out Auto Scroll, the first category on or off . LST 3800 Menus The unit has 10 menus. To access a menu, press MENU...
Installation and Operation Manual - Page 8

.... Use the UP key to scroll the deep 8 Options The Options menu allows you of water depth, ranging from 1 to see it when the dash lights are connected, the backlight will beep when..., a contrast scroll bar will restore the unit to 640 feet (195 meters). Shallow Alarm The shallow alarm can be set to notify you of water depth, ranging from 1 to the default settings used when the ...
Installation and Operation Manual - Page 9

See detailed entry on page 6. Timeout You can modify the amount of measure for temperature and depth from FEET and FAHRENHEIT (°F) to METERS and CELSIUS (°C). Set Units The Set Units menu allows you to the desired depth. System The System menu displays the gauge's software information. 9 alarm menu into the center square...
Installation and Operation Manual - Page 11

...charge a replacement of the product or a refund for the product. SKELLY DRIVE, TULSA, OK 74128 (800) 324-1356 11 Some states do not allow the exclusion or limitation of ... failure to conform to obtain without charge or be substantiated by us, you . LOWRANCE ELECTRONICS 12000 E. LOWRANCE ELECTRONICS FULL ONE-YEAR WARRANTY "We," "our," or "us" refers to provide reasonable and...
Installation and Operation Manual - Page 12

...PO Box 129, Catoosa, OK 74015-0129 Call toll free in USA 092805 For Lowrance and Eagle Products © Copyright 2005 All Rights Reserved Lowrance Electronics, Inc. 12 Pub....-1356. 8 a.m. to 5 p.m. To order Lowrance accessories, please contact: 1) Your local marine dealer or consumer electronics store. How to Obtain Service... ...in Canada, 800-661-3983, or dial 905 629-...

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