WFCO Inverter 8835 8845 8855

Question

A buddy of mine had me check over his WFCO inverter 8835 that was no longer charging. I found that Capacitor 10 which is a 25V 220Uf 105 degree rating was bad. This seems it could be a common problem as it is next to some power resistors that give off a lot of heat.

Just wanted to give anyone else a heads up, before replacing or tossing your old one.

They run about 30 cents at mouser.com :

Here is the link to mouser electronics.

mrwizard · Answer

ThanksElectronics Intel is always good too haveMany WfCos out there..I have the 98100

mexicowanderer · Answer

I used Reynolds extra-heavy duty foil as a sheet thermal barrier. A spootch of adhesive on the ceramic power resistor. Dropped temp of the capacitor in 82F ambient from 126F to 103F

A silent fan blowing across the resistor / capacitor area also works like a charm. Like 25db.

scrubjaysnest · Answer

Better off not wasting the time. The WFCO won't charge a battery properly. Tested ours and it never got above 13.6 volts.  Doesn't go to boost and the absorb voltage is way to low. It's in the shed somewhere collecting dust.

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WFCO Inverter 8835 8845 8855

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