house electrical

[sgilbert]

[Admin note - Steve, This bounced as a non-member submission. I show you
subscribed as sgilbert Patrick]

Dear Team GMC,

I need some help with house electrical system. Our =9176 GMC was up on
blocks for 3 weeks and was not run. The house batteries died even
though I was plugged in to 120V. Even with GMC plugged in to 120V, no
12V items worked! Now it looks like I can run engine and I get a
charge to rear batteries. I do not think the converter is getting 12V
to the rear batteries or, in fact, to the house. So... where do I
start?? What do I check???

TIA

Steve Gilbert
Auburn, CA

 

[sgilbert]

Team GMC,

I need some help with house electrical system. Our 76 GMC was up on
blocks for 3 weeks and was not run. The house batteries died even
though I was plugged in to 120V. Even with GMC plugged in to 120V, no
12V items worked! Now it looks like I can run engine and I get a
charge to rear batteries. I do not think the converter is getting 12V
to the rear batteries or, in fact, to the house. So... where do I
start?? What do I check???

More info added to previous message...
Looked at converter. I think it was putting out 13.0 Volts (at the
converter). I then disconected house batteries and tested leads and it
read 8.3 Volts. I presume (Hmmm) that 13V should be read at the house
batteries (but I am not sure). I also am not sure if some isolator is
isolating when it shouldent!

TIA

Steve Gilbert
Auburn, CA

 

[rob teed]

I dropped a flashunit on a camera once, It used two AA batterys.
I opened the case to fix a cracked pc board. touched two solder
pads below a capacitor, threw me across the room and burned
two of my fingertips, I mean cooked them,BLACK blistered
round spots on the tips. Discharge those caps guys.
Rob Teed 74 Painted Desert

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailtowner-gmcmotorhome]On Behalf Of
> RickStapls
> Sent: Thursday, June 03, 1999 10:41 PM
> To: gmcmotorhome
> Subject: Re: GMC: house electrical
>
>

>
> > Be sure to take a screw driver and
> > short across the two posts of the caps-----otherwise you can be in
> > for a nasty shock.
>
> Arch,
> Good advice. Guess I was lucky. Both times I took mine
> apart, one of the
> capacitors was shorted, and so discharged all 3 of them.
> (They're wired in
> parallel using bus-bars.)
>
> Rick Staples
> '75 Eleganza
> Louisville, CO
>
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[sgilbert]

Thanks to Rick, Gene, Duane and all others who gave suggestions for the
lack of charging the house batteries. The problem was bad ground
contacts! Cleaning these seems to have us back and running! I also
found that my converter is only rated to put out max 13 volts so when
on shore power, I do not get a hugh charge!!?? Much higher with engine
charging.

Thanks again,

Steve Gilbert
Auburn, CA

 

[jim bounds1]

TIA,
Disconnect the power converter from the fuse input bar and read its output
when plugged into shore power. If you have no voltage, check to be sure
the receptical the converter is plugged into is hot. If so, the converter
has become a boat anchor!

If your tests show good, work your way up the fuse block.

Hope this helps,

Jim Bounds
- --------------------

>Team GMC,
>
>I need some help with house electrical system. Our 76 GMC was up on
>blocks for 3 weeks and was not run. The house batteries died even
>though I was plugged in to 120V. Even with GMC plugged in to 120V, no
>12V items worked! Now it looks like I can run engine and I get a
>charge to rear batteries. I do not think the converter is getting 12V
>to the rear batteries or, in fact, to the house. So... where do I
>start?? What do I check???
>
>More info added to previous message...
>Looked at converter. I think it was putting out 13.0 Volts (at the
>converter). I then disconected house batteries and tested leads and it
>read 8.3 Volts. I presume (Hmmm) that 13V should be read at the house
>batteries (but I am not sure). I also am not sure if some isolator is
>isolating when it shouldent!
>
>
>TIA
>
>Steve Gilbert
>Auburn, CA
>
>
>
Jim Bounds/Co-op Motor Works Orlando www.gmccoop.com