[encantotom]

hi all,

for several years, the internal fans on my prosine 3000 have not worked.  then it overheats and you get alarms at the control panel.  it started 2 summers ago.  being the redneck engineer that i am, i put a 10 dollar walmart desk fan in front of it and it ran continuously for over a year.  then it failed and i put another exact fan there.  it has ran for over a year nonstop now as well.  but....if there is a large load on the charger, it still overheats.  

xantrex prosine was an innovation at the time that didnt use the large torroidal transformers.  it was a solid state inverter.  it weighed almost half of the current ones.  it apparently was also outsourced and is considered and has been considered non-repairable and they will not work on them.  also, they will not release schematics or anything about them.  

i found someone online had taken a picture of the guts and i was able to zoom in and get the model number of the 3 whisper fans that are inside.  i bought them a long time ago and decided i would see if i could fix it.  

it is simple.  if the dc voltage to the fans is there, then just replacing the fans should be good.  if not, it will likely be a replacement with a new more modern one.  but they dont fit is the same spot and are larger...ugg

so this morning i took the prosine out.  remember, i am the size of sasquatch and it is mounted on the wall in a bay.  i had to take out the built in vacuum, and figure out how to get it off the wall.  kind of like a jig saw puzzle.  after an hour or so i got it out.  fortunately i am in the shop and have good lighting and a big48" fan i put pointed into the bay.  it is hot and humid today....50% humidity here and 105 is yukky for arizona.  

next is to take it apart and see what i can do.  

tom