Re: (ET) E-12 Charger trouble

[Chad Bush <bushman165s aol com>]

Bill,

Sounds like either your capacitor shorted and/or one or both of the 
diodes broke down. Direct replacement diodes are very hard to find, but 
you might be lucky enough for Harold to have a new diode heat sink. 
Otherwise, you will need to find a few 1N1186 diodes that are 1/4-28 
stud-mount, drill a few holes in the heat sink, and solder on a new 
lead on each. I usually place them right above the old diodes so you 
don't have to worry about removing them and I put insulated stake-on 
connectors between the transformer and diodes so that future 
replacements are a little easier. The capacitors you can get from Jim 
Coates' website or Harold Zimmerman. I recommend replacing both at the 
same time.

Good Luck!

Chad Bush, Dayton, Ohio


-----Original Message-----
From: Bill Alburty <willaim kc rr com>
To: elec-trak <elec-trak cosmos phy tufts edu>
Sent: Tue, May 8, 2012 8:23 am
Subject: (ET) E-12 Charger trouble


Last night, after mowing, I plugged in the charger, and when I turned
the timer knob to begin charging, a loud noise came from the charger 
and
it blew the 20A fuse in my house circuit. I haven't opened it up to 
look
yet, and haven't plugged it in again. What should I look for as the
problem? What tests should I do? The noise sounded like a big clatter,
as if the core plates were vibrating unfettered.
I appreciate all advice and speculation.

Bill Alburty, Kansas City

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