My Magnetek converter

You need both 30 amp Reverse Polarity fuses for the converter to work. You have been on battery, which has run down. It needs to be recharged ASAP.

You have the newer 7300 converter, not the old 6300 type, name changed to Parallax soon after the 7300s came out early 2000s.

I would assume both are shot. Need to separate and test each separately. If you have a portable charger you could try charging the battery and see what it does. PD4645 would replace the converter very nicely and take far better care of the new battery.

http://www.bestconverter.com/PD4645V-45-Amp-Converter-Upgrade

Having dissected too many converters, I believe I can safely say failed capacitors are a prime reason for malfunction when they get gray hair. Then after replacing the obvious failed cap, testing of the remainder reveals none that survive a test. And unless someone has special buying power replacing the weak capacitors would bring a price tag shock. The clincher to me is the possibility of failure in the control circuit. Some manufacturers buff off component ID numbers. Integrated circuits become obsolete and have no known replacements. I do not remember seeing a detailed explanation in the forum why repairs are obsolete so I thought I'd add my one cent's worth :)

Hi,

I'd replace it with a boondocker, Iota, or Progressive Dynamics model.

http://bestconverter.com/

Dang.. Do not know what model Magnatek you have but recommwend upgradeing

The rest of this is specific to the 6330 but may cover other models.

The 6330 is not like modern converters it is a converter that outputs raw unfiltered rectifiesd A/C regulated by a ferroresonate transformer.. NOT GOOD AT ALL, and a small low current charger thats also poorly regulated A relay bridges the two if no shore power. Kind of like this

Battery---30 amp---T1---Relay---T2--30 amp--branch circuits.

T-1 is the charger and a couple of branch circuits (IE: Radio) that truly need clean DC.. T2 is the converter

so to run on batteries you need BOTH fuses. but one and I do not know wich will do on shore power.

IF one is blown. the other likely is as well but check it. replace BOTH with power off (Battery disconnected shore unpluged) or better yet upgrade the electroincs with either a progressive 4600 or 9200 (46 for "Converter is part of fuse panel) 9200 if it's a stand alone.. Your batteries will thank you.

waWA8yxm
It is in 7300 series, # 7345 I think.

BFL13, I am going to start with a charged or new battery.

I do not know the 7300 series
On most coverters MOREW than30amps (that's a 45) the two 30 amp fuses are in parallel so if one blows so does the other.. over 60 amps they add a 3rd fuse also in parallel. and again if one blows. so do the other two.

The 6300s did not have RP fuses, the 7300s(and 7100s) had theirs in the DC fuse panel. Deck mount 7400 on the unit.

From that in the OP, he did not have the 6300.

Someone tell me again how to check the converter to see if it is working. My old battery did have a dead cell. Thanks