LG IPM yppd-j015, yppd-j016

[tw2005]

I've got a question about these LG IPMs. I see a lot for sale with the backs filled with a black resin.
Does anyone know what that's all about? Is it a revision or an attempt by sellers to pass these off as new?

The other thing is normally there is a screw which earths the IPM to the heatsink.
If I get one filled in the back and there is no screw or screw hole, how critical is it for that screw earthing the module?
Can it be safely installed without it?

[cadiman]

Re: LG IPM yppd-j015, yppd-j016

I have seen too many remans. I have received them with solder on the pins! and if they are solid they most likely have been remand.

I send the boards out now since I can get them re-chipped for the same price as the chips and there are some good people out there doing these. Plus you get a warranty.

You need to watch some need to be used in pairs if the numbers change at all. You can`t mix and match these even if the pin out is the same.

[tw2005]

Re: LG IPM yppd-j015, yppd-j016

I have seen too many remans. I have received them with solder on the pins! and if they are solid they most likely have been remand.

I send the boards out now since I can get them re-chipped for the same price as the chips and there are some good people out there doing these. Plus you get a warranty.

You need to watch some need to be used in pairs if the numbers change at all. You can`t mix and match these even if the pin out is the same.

SO who does the rechip? Which parts are redone? I wonder if they rebody these. That is pull the board out and place it in a new shell with clean legs.

I'm working on another mates disaster and he already replaced some of the modules but somehow blew them. The ones he had were filled so I heated it up and peeled it out. What I saw on some of the pins solder wise looked sus.

It would be great if you could just replaced those parts with conventional SMD FETs.