Lowrance 520 power cord puzzle: I need a new one

[greybeard]

My Lowrance 520 shut off and would not come back on. I tested the plug and got a reading of 12.4V. I then tried the 520 on my 337 power cord and it worked. I tried the 337 on the 520 power cord and it would not power up. I checked the fuse and had continuity but looked a little corroded so replaced. I scraped the inside of the plug and applied dielectric grease.

I called Lowrance tech support and they had no answer. He went on to say they no longer have that power cord, gave me the part number and wished me luck on EBay. Nothing there!

My question is how can there be power at the pins but not connect to the unit?

I’m not good with electrical stuff but vaguely remember something about getting a voltage reading but some resistance will keep the power down so it won’t run the device.

Is there anyone who has an old Lowrance power cord laying around they could part with? If you do I can check with lowrance to see if it is compatible.

Thanks,

Grey Beard

[anchorman]

Do you have a picture of what you need? I may have one in my boat...

[greybeard]

The ends of some of the Lowrance power cords look much the same and a nice variety are interchangeable but all pre HDS. I need one that was used with an external GPS using NEMA. I could get a power cable from one of the new HDS units and it would get the sonar on but no NEMA for GPS.

Thanks,

GB

[greybeard]

Problem solved. A loose wire on the O ring to the battery. Funny how it worked OK for almost 2 yrs. Interesting that it would read 12.3V but not be able to carry enough power to fire up a low draw locator.


GB

[griff n]

Hate it when stuff doesn't work. Happy you got it fixed. Don't fish down your way ,but enjoy your reports. Good Luck this summer!