FREE: VFD 4.0KW 220 SINGLE PH INPUT -> 220 3 PH OUTPUT...there is a catch though

[KeeponDragon]

Pics will be added once I get home (posting this from work)

Reason for the smoking deal?? It simply stopped working. It would click, turn the motor over a 1/4 turn and then stop.
I tried to do a reset, and that didn't help.

I'm not handy with electrical diagnosis in the slightest. It might just be a popped capacitor or a diode left the chat...
And I hate tossing things out that may well be repairable...

I'll split the freight with anyone who wants to take a stab at it. That way, if it is in fact a complete dud...we're both out the $$.

This ad is/was inspired by PaulL's unfortunate ordering mixup from AliX...been there buddy!!

 

[Sailor]

I would be very interested as my best friend of 50 plus yrs. Is an electronic specialist and he said he would look at it
Thanks, Randy (Sailor)

 

[KeeponDragon]

Randy, DM me your address, I'll get a freight quote from work.

 

[slow-poke]

I have a similar MIC VFD that stopped working with just a few hours of actual use. I have a lot of experience troubleshooting electronics, however if fault has no physical evidence and power rails are as expected troubleshooting without a schematic is difficult.

 

[mickeyf]

troubleshooting without a schematic is difficult.

No kidding. But if you are particularly lucky and have a way to look for thermal hot spots (IR camera), you may be able to put reduced power to the board and identify a component that is sucking more than its quota and voila. (I did say "Lucky", yes?).

I once (1980ish?) tortured a memory bank one chip at at time (of dozens) with an ice cube in a baggie, until it finally confessed. Of course that's a very simple scenario.

If Randy passes, I might want to take a crack at it. I am on the verge of buying on of that rating.

 

[KeeponDragon]

Randy has sent me his shipping info

So I'd say this one is a done deal

 

[BaitMaster]

….troubleshooting without a schematic is difficult.

This is the name of the game in circuit board troubleshooting.

Sometimes a guy does get extremely lucky. Those huangyangs are very inexpensive to buy new.

Reputable drive manufacturers sell spare parts for their drives, although the parts are so expensive they sometimes are the juice that isn’t worth the squeeze.

Good luck with fixing the HY. Let us know how it goes.

 

[grease monkey]

I have fixed quite a few surprises just with a strong magnifying lens and a soldering iron, to reflow cold solder joints!! some simply didnt work, some worked till it got warm, with a strong magnifier, you can actually see the cold joint, and just warm up the joint with an iron and reflow the solder, voila!