Advanced marine electrics and electronics troubleshooting : by Edwin Sherman

By Edwin Sherman

SAVE time and cash WITH THIS cutting-edge consultant TO the most recent, such a lot complex DIAGNOSTIC gear AND TECHNIQUES

"Ed Sherman is certainly one of America's nice lecturers and communicators of marine technology." -- Tim Murphy, former govt editor, Cruising World

Whether you're a marine electronics specialist or a boatowner, Advanced Marine Electrics and Electronics Troubleshooting is helping you realize the hot, extra strong tools of troubleshooting marine electric and digital structures. a contemporary boat's refined installations and networked electronics can stretch the normal diagnostic tools, in keeping with hassle lighting and multimeters, previous their worthwhile limits. This ebook will provide help to:

  • Use microprocessor-based diagnostic instruments and strategies from the automobile and communications sectors, tailored for boats for the 1st time
  • Diagnose the main tough AC and DC difficulties
  • Protect communications and navigation electronics from interference and lightning
  • Seek out and cast off stray-current resources and galvanic corrosion

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Extra resources for Advanced marine electrics and electronics troubleshooting : a manual for boatowners and marine technicians

Sample text

Remove the starter for further inspection and repair as needed. Lower than normal current draw is a classic symptom of loose or corroded cable connections or undersized wiring (which will show on the inTELLECT EXP-1000 as higher than normal loop ohms resistance). You may need to conduct additional testing to determine the location of the excessive resistance within the circuit. If the wiring checks out OK, then the problem is within the motor itself. Charging System Test The third test under the System Test (main menu) is the charging system test.

We’ll look at how these are done using another high-tech tester later in this chapter. 19 20 e l e c t r i c a l s y s t e m s t ro u b l e s h o ot i n g 1 The initial screen for the starter circuit test: first, start the engine. ) MINIMUM CRANKING VOLTAGE AND VOLTAGE SPIKES Minimum cranking voltage is especially important on today’s modern boats. The computer-driven systems found aboard virtually all boats, as well as common marine electronic equipment such as fishfinders and GPS chartplotters, are all sensitive to the low-voltage conditions that can occur during engine cranking.

Battery Test The inTELLECT EXP represents the latest evolution in the Midtronics line of battery testers. Like the Micro500XL, it uses conductance The main menu of the inTELLECT EXP-1000. ” 3 Next, you enter the battery type: regular flooded, AGM, AGM spiral wound (such as the Optima brand), or gel-cell. ” This last option accommodates testing from the “jump start” terminals now incorporated on some over-the-road vehicles, and even some new boats. You can use this option to hook into the positive and negative DC bus bars found behind most boat electrical panels, eliminating the need to crawl into some tight battery installation.

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