Converter kaput? Need to size replacement

[agesilaus]

OK here is the situation:
1)Progressive Dynamics Converter that worked all summer on one bank of 6V.
2) 2 banks of 6V x 2 golf cart batteries
3) Converter not charging the batteries
4) Pulled fuses and checked with DMM, all good
5) Checked cables, one was very loose. That tightened up.
6) Voltage with shore power disconnected at converter 10.78 V
7) Fan not operating on the converter

I can't see the 120 VAC in cable and might have to pull the converter out to get to it. Only access is behind the fuse panel but AC stuff all works in the RV.

So my diagnoses is that the converter is kaput, you all agree or what and how should I size a replacement to charge the two banks of 6 V batteries? Thanks for any help from people who know more about this than I do. Let me note that only one battery bank is connected right now.

[agesilaus]

Walked out a bit later 240 dollars lighter with a brand new factory refurb Back to Tekonsha hooked it up. plugged in my original wizard and off to Where I am now (My winter quarters) it's still working,.
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How big was that, you can buy a new 60 amp for less than that and a 70 amp for slightly more.

[wa8yxm]

Ok here is my story .One halloween weekend (10/29) came home from church to dead batteries. Testing showed Progressive Dynamics 9180 failed.. Got a Deltran Battery tender delux (2/20/70 amps) and set it in 20 amp mode for 24 hours till it dropped to tender mode.
Drove to Tekonsha MI (From Davision MI) parked at the TA overnight (used to be the Tekon but guess it got sold to TA Tekon has history). Next day (10/30) Headed back north (by car) to Marshall, walked into a building and the woman said "Can I help you" Pointed to the 9180 under my arm and said "Dead".. She pointed me to a pair of double doors I said thank you and walked through those where a 2nd woman said "Can I help you" and I again pointed and said "Dead" she said "on my desk"

Walked out a bit later 240 dollars lighter with a brand new factory refurb Back to Tekonsha hooked it up. plugged in my original wizard and off to Where I am now (My winter quarters) it's still working,.

[agesilaus]

Yeah I was sitting here thinking about it and figured out I had it backwards. I'll do that tomorrow.

[BFL13]

6) Voltage with shore power disconnected at converter 10.78 V

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You want to check the converter's voltage with no battery connected. Needs 120v for the converter.

That 10.78 would be your battery voltage--yipes!