How to test if converter blown? - Fiberglass RV


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-18-2015, 08:56 AM   #1
Junior Member
 
Name: Marg
Trailer: scamp 13
Alberta
Posts: 7
How to test if converter blown?

We have 2008 13ft Scamp. When putting battery back on after winter we reversed the wires by mistake. So we bought brand new battery, and replaced a blown 20 amp fuse. Trailer lights to vehicle work. Inside lights and fan DO NOT work. Switched the knob outside from 12v to 120v and plugged into 15 amp (with 15 amp plug) to my house and everything works fine off electricity. Just not the battery.
Tried to ask someone in service at Scamp dealer they said must be battery? But battery is brand new and we hooked up properly. He said if lights inside work when plugged in, then the converter not the problem. Oh and we also replaced the 250v 8a cylynder fuse in the converter itself in case it was blown (it is white not glass so cant tell if blown so put new one just in case)
Thoughts????
__________________

__________________
Minalta is offline   Reply With Quote
Old 07-18-2015, 09:08 AM   #2
Senior Member
 
Briantb's Avatar
 
Name: Brian
Trailer: 2015 Scamp 13 Front Washroom, Little Guy Teardrop
Ontario
Posts: 372
There is a fuse at the battery connection as well as a fuse on the convertor

Sent from my XT1028 using Fiberglass RV mobile app
__________________

__________________
Briantb is offline   Reply With Quote
Old 07-18-2015, 09:22 AM   #3
Senior Member
 
Bob Miller's Avatar
 
Name: Bob
Trailer: 1973 Hunter Compact II
California
Posts: 7,912
I guess the real test is to disconnect the battery and then see if the DC stuff works. If it still works you have something coming out of the converter and can concentrate on the battery connection(s).
The "American" brand converters used in Scamps around that same time period were not well known for their robust construction or reliability and a reverse connection may have fried more than just the morning eggs.


FWIW: A simple multi-meter is a good investment, every trailer owner needs to have one in their tool kit, if only to be able to answer our questions.
__________________
Bob Miller is offline   Reply With Quote
Old 07-18-2015, 09:27 AM   #4
Junior Member
 
Name: Marg
Trailer: scamp 13
Alberta
Posts: 7
Thanks Brian. I did read that in all the forums i researched before i sent in my own question. I have checked every inch of the trailer inside and out and can't find another fuse anywhere! I am assuming that the fuse you mention is attached to some or one of the wires that run from battery and make its way to the converter? I have even pulled some of the rat fur away from the wires, removed electrical tape etc. and don't see one anywhere!? I wish i could find another fuse because intuitively it sounds like it would be the problem.
__________________
Minalta is offline   Reply With Quote
Old 07-18-2015, 09:30 AM   #5
Junior Member
 
Name: Marg
Trailer: scamp 13
Alberta
Posts: 7
Thanks Bob - yes when i disconnect the battery and the DC stuff works (i asssume when you say DC stuff u mean its plugged in to electrical outlet and then my interior lights work).
__________________
Minalta is offline   Reply With Quote
Old 07-18-2015, 10:01 AM   #6
Senior Member
 
Bob Miller's Avatar
 
Name: Bob
Trailer: 1973 Hunter Compact II
California
Posts: 7,912
OK... On Scamps there are sometimes fuses tucked into the wiring right after it enters the body, under the front bunk seat, or in the wire right at in the battery box.


I'd tell you to check for battery voltage at the power chassis connection if you have a voltmeter or a simple 12 vdc test light
__________________
Bob Miller is offline   Reply With Quote
Old 07-18-2015, 10:45 AM   #7
Senior Member
 
Bob in Mb's Avatar
 
Name: Robert
Trailer: Surf-Side
Manitoba
Posts: 261
I have never worked on a Scamp , but from other threads I beleive that the frame is used as the ground . If this is the case the battery to frame connection may have been cooked when connected backwards . Get a voltmeter and check between the battery and frame for continuity .
__________________
Bob in Mb is offline   Reply With Quote
Old 07-18-2015, 02:11 PM   #8
Junior Member
 
Name: Marg
Trailer: scamp 13
Alberta
Posts: 7
Further to my initial post trying to figure out converter/battery problem

This is a pic of inside my converter. The 20 amp blew and i replaced it. When plugged into electrical outlet this 20amp glows - is that normal? I will look more for another fuse where battery lines come in trailer, what is the size of the second fuse? What am i looking for? It must be smaill cause so far i cant find it. Just a reminder, i did replace the 250v 8a cylinder fuse u see inside the converter and it is brand new battery. Interior lights ans fan only work when i plug to electrical outlet wont work off of battery.
I will go get a voltmeter as my last test as suggested but if any other tips in meantime thanks in advance.
Attached Thumbnails
image.jpg  
__________________
Minalta is offline   Reply With Quote
Old 07-18-2015, 03:58 PM   #9
Junior Member
 
Name: Marg
Trailer: scamp 13
Alberta
Posts: 7
Okay i just googled and found out that this glowing fuse means it is blown. The new pack of fuses i bought must be those smart fuses. So this is the third time it has blown - my question now is why does this 20 amp keep blowing on me?

Thoughts??
__________________
Minalta is offline   Reply With Quote
Old 07-18-2015, 03:59 PM   #10
Senior Member
 
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 1,886
It blows because something is miswired or shorted out. What is only a guessing game unless you can use some basic test equipment to do some methodical trouble shooting. Sorry.

Actually there is something you can do.. verify the make and model of the converter and look up the fuse placement to see which fuse is giving you the problem (what does it protect).
__________________
gordon2 is offline   Reply With Quote
Old 07-18-2015, 04:06 PM   #11
Senior Member
 
Briantb's Avatar
 
Name: Brian
Trailer: 2015 Scamp 13 Front Washroom, Little Guy Teardrop
Ontario
Posts: 372
Have installed anything new on the DC side? New light bulbs

Sent from my XT1028 using Fiberglass RV mobile app
__________________
Briantb is offline   Reply With Quote
Old 07-18-2015, 04:17 PM   #12
Junior Member
 
Name: Marg
Trailer: scamp 13
Alberta
Posts: 7
Yes i did install a new light bulb . The person i bought trailer from had installed some funny looking loght that wasnt very bright so i bought new bulbs. I will experiment by taking it back out and seeing if that is culprit. Thanks for possible tip!
__________________
Minalta is offline   Reply With Quote
Old 07-21-2015, 10:05 AM   #13
Senior Member
 
Name: Charles
Trailer: Scamp 16
Ohio
Posts: 262
Convert woes

Get a good meter and check the voltage on the battery. Scamp is right, if the light work when you plug it in it is not the converter. My Scamp had an additional fuse in the closet under the carpet. Drove me nutz till I found it. hope that helps.
Charlie
cmartin7482@gmail.com
__________________
cmartin748 is offline   Reply With Quote
Old 07-21-2015, 10:08 AM   #14
Senior Member
 
Name: Gordon
Trailer: 2015 Scamp (16 Std Layout 4) with '15 Toyota Sienna LE Tug
North Carolina
Posts: 1,886
Troubleshooting - PD9100 Series Power Converters

Still don't know the model of your converter but they are more alike than not, so this guide might help.
__________________

__________________
gordon2 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuse Blown Jackie R Problem Solving | Owners Helping Owners 6 09-11-2010 07:04 AM
it is sunday evening and we have blown potteralice Care and Feeding of Molded Fiberglass Trailers 4 08-16-2006 12:32 AM
Blown foam insulation?? Legacy Posts Care and Feeding of Molded Fiberglass Trailers 8 11-03-2002 03:50 PM

» Trailer Showcase

Betty

KentH

trillium

spud
» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:14 AM.


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