Completely destroyed this fan driver

[dandyrandy]

And the slots in the board are hillbilly air gaps for ac isolation in case the board gets dirty enough to conduct. This will be the line side.

 

[Renfro]

As far as the AC input, that could be reversed (hot and neutral) and it would never know the difference.

 

[dandyrandy]

I did warranty work for numerous companies as well. Lots of switchers. Just trying to help.

 

[Airwalker16]

I appreciate all the rapid feedback fellas. I'll get a pic for ya. Ya I don't know how I messed that up. I'm aware of what drivers do. Just completely fucked up this one. I only opened it to see if I could unsolder the extra wires from the board on the output so I didn't have live wires just hanging unused. @Renfro

 

[Airwalker16]

And the slots in the board are hillbilly air gaps for ac isolation in case the board gets dirty enough to conduct. This will be the line side.

Surprisingly there's gapping on both ends of this board.

 

[dandyrandy]

Surprisingly there's gapping on both ends of this board.

See the two surface mount bridges?

 

[dandyrandy]

Find the caps on top of the board rated at 160 or better and trace it back. Their will be a slot that bridges the legs on the optoisolator. Usually 4 legs. The secondary low voltage side controls the power mosfet thru the optocoupler. This isolates the low and high voltage.

 

[dandyrandy]

The components marked 0 on them by the bridges are surface mount "fuses".

 

[dandyrandy]

Interesting.

 

[Airwalker16]

Ya I definitely wired AC to DC. God I'm so stupid.

 

[dandyrandy]

My best house call was for a rear projection Sony. Warranty call. Spots on the screen. The customers had the place sprayed for roaches and I think most ended up in between the lenses and the guns.
Another one I went to I got there and two trailers were butted together with a roof over them. Post roof not attached. Doublwide! Anyway I go into this dark place with my tools and this young lady led me to the TV. Setting on the coffee table was a revolver and a pile of money. I fixed it and they tossed me cash with a tip. Two weeks later I read in the paper they were arrested for meth.... I got stories.

 

[dandyrandy]

Ya I definitely wired AC to DC. God I'm so stupid.
View attachment 4274214 View attachment 4274215 View attachment 4274216
View attachment 4274217

What a cap. That will take some serious line voltage!

 

[Airwalker16]

So do I just wire both the AC negs and pos together to my plug wires?

 

[dandyrandy]

Let me look at the pics a minute.

 

[dandyrandy]

The two surface mount bridges on the bottom can you trace which on goes to the 600v cap? They appear to be separate.is there two high voltage rated caps?

 

[dandyrandy]

It appears the wider spaced inputs. I don't see jumpers.

 

[dandyrandy]

It appears db?1 and two are the rectifiers for the line. Maybe the two are connected already. Maybe check resistance from the two possible inputs? Not sure why the would have two.

 

[dandyrandy]

It looks like two output pins on the surface mount bridges are connected. Maybe two to increase current?

 

[Airwalker16]

Here's more detailed ones.

 

[Airwalker16]

I have removed 4/6 of the output wires down to just 2 so there aren't unused live wires.