Welcome to JOF. I can't tell you how to access but it sounds like you will be needing a new converter.
Once you find out the make and model, contact the manufacturer. Many have rebuilt units that are warranted like new for great savings.
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2011- 351RLTS Eagle, MorRyde suspension/pin box,
2017- F350 6.7 PSD Lariat FX4,SRW, SB,CC
Hughes PWD SP-50A, TST TPMS
Gator roll-up bed cover
B&W Turnover ball, Companion Std hitch
Can't find what you're looking on JOF? Try Jayco Owners Forum Custom Google Search
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