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Power Tech voltage regulator

My generator saga is solved.  I trouble shot my generator problem to a faulty voltage regulator thanks to the forum and Jeff at Power Tech.  I decided to take a road trip to Power Tech in Leesberg, Florida.  Jeff has a mobile generator repair service since Power Tech does not do repairs at the factory.  Jeff is still the service manager there but he only does repair work after 5 and weekends.  I met him at the Lowe's parking lot at 5 pm and within an hour he removed and replaced the voltage regulator.  He explained how the new regulator is wired different than the old one and if it is installed wrong it will cause the head unit to burn up.  I could have probably installed the new one by myself but being sure it was done right for $480.00 it was worth the every penny.  Thanks to Jeff at Power Tech.

Terry and Cheryl Brown
1997 U295 36'
Build #5066
2006 Jeep TJ Rubicon
1993 BMW R100 GSPD

Re: Power Tech voltage regulator

Reply #1 –
Count me as one who burned up a head unit.
Installed wrong means copying the old labeled wires.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Power Tech voltage regulator

Reply #2 –
Congrats. Jeff helped me diagnose my bad voltage regulator on an 8KW unit.
1998 36 foot U270 Build No. 5328 WTFE, 900 watts solar, Victron controller, B2B, bat monitor, 600 AMPH lithium with 2018 Chevy Colorado toad, SKP #110239, Motorcade #17781, 2021 Escape 17B for when Coach is broken down and campsites are too small, retired and full-timer since Dec. 2020. Part of RV family since 1963.

Re: Power Tech voltage regulator

Reply #3 –
I had my head unit burn up when MOT installed my Voltage regulator wrong.  The good thing is they stepped up and paid for the repair without a hassle
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon
 

Re: Power Tech voltage regulator

Reply #4 –
https://www.youtube.com/watch?v=p4tixm-kn00 my explanation of the issue as it applies to my 12kw generator.  It has to do with grounding one lead and not separating another. 

One thing they don't mention too is that on startup the voltage will probably be very low.  You have to crank a trim pot in there to bring it to spec.  It's extremely sensitive.