ELECTRIC FENCE CHARGERS

Guyrod

New User
I am interested in starting an electric fence charger repair business. Any ideas on where to get repair guides to get me started?
 
(quoted from post at 23:29:20 08/04/11) I am interested in starting an electric fence charger repair business. Any ideas on where to get repair guides to get me started?
don't know about the manuals & guides, but I would try to talk to someone who has been in the business. My experience is that common parts such as resistors, caps, SCRs, etc. are readily available, but the heart of the chargers is the transformer/coil and those seem to be the sole proprietary part of the manufacturer & thus too expensive to make most repairs practical.
 
I have decided to quit fixing chargers today.The new chargers boards are too complex to repair.I worked on one today that had both circuit boards bad.67 bucks fot parts alone.Once my parts are gone Ill quit.Very little service info is available now.Didnt used be that way.Zareba will sell only the complete works for their chargers.No individual parts.The output transformers are epoxied to the circuit boards.Parmak wont supply schematics or even voltage check points on the new chargers.Many parts are obsolete on the older chargers.I have been repairing chargers here since 1965.Started in the early 50s where I grew up.
 
Just as a point of interest, I just repaired a fencer that was built in 1940 and it is very repairable and works fine, the newer ones are now basically thro away in my opinion
 
(quoted from post at 06:28:51 08/10/11) Just as a point of interest, I just repaired a fencer that was built in 1940 and it is very repairable and works fine, the newer ones are now basically thro away in my opinion
idn't have to replace coil/transformer did you?
 
That would have added 24 bucks more to the repair.Transformers are a common repair item, all have come from the mfg.
 
(quoted from post at 20:41:51 08/05/11) I have decided to quit fixing chargers today.The new chargers boards are too complex to repair.I worked on one today that had both circuit boards bad.67 bucks fot parts alone.Once my parts are gone Ill quit.Very little service info is available now.Didnt used be that way.Zareba will sell only the complete works for their chargers.No individual parts.The output transformers are epoxied to the circuit boards.Parmak wont supply schematics or even voltage check points on the new chargers.Many parts are obsolete on the older chargers.I have been repairing chargers here since 1965.Started in the early 50s where I grew up.

I understand this is an old post, but I have been searching for several hours for anyone who knows anything about fence chargers.

I recently was given an old Zareba A100L1 that someone has attempted to repair. There is no power cord, and several wires have been disconnected, and they could be reconnected in more than one place. I am an old ham Radio operator but am not familiar with fence chargers. I am comfortable working with high voltages. Would it be possible to tell me where I could find any prints for this charger . I can't find any information on any brand of fence charger, much less this particular one.
 
Most are pretty simple. Rectify the line to charge up a 10UF cap or so, then an SCR to dump that cap into the primary of the output HV transformer. Usually a UJT, DIAC, or a trigger diode of some type to act as timer & trigger to fire the SCR. Now that amounts to very little circuitry. Most of the circuitry in a PARMAK that I opened up wasn't in what I just described, but rather was used to monitor the pulsing & blink the light on the box.........really, totally un-necessary to the operation of the fence pulser!! Usually find anc arc device or Varistor across the input line to help protect unit from power line surges from whatever source, perhaps lightening.....when these act, the result is blown fuse(s).
 

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