DIY BGA Reballing?

[Izi Goldenberg]

Hi,

I own an ONKYO receiver that requires a TI DTS chip BGA reballing.

I wander if there's a way to do it correctly with a professional hot air blower rather than a infra red heating station?

How do I find the right stencil for this chip?

Thanks !

 

[Mark Tillotson]

Stencils are laser cut, normally the info for this just comes out of the pcb software.

Not sure there's any chance of using a stencil for rework! Where would the frame go? Or is the chip itself stencilled? That could work.

I suspect you just have to reheat to reform the balls in place without moving the chip? Certainly sounds the least risky option

 

[BamboszeK]

Reheating dry joints in BGA chips with with ordinary hot-air station is only temporary solution. It should help for some time, but later full reballing would be required anyway.
Personally I would stay away from home reballing, especially without stencils and some experience.
Some BGA chips are offered with balls already placed, these are much easier to replace than bare chip, stencil and pack of tiny solder balls 😉

 

[Izi Goldenberg]

Hi and thanks for the answers.
I actually tried heating the chip for 10 minutes, worked for a couple of months and died again.

I learned the following:
Original chip: D830K013BZKB4
Updated version: D830K013DZKB4W

• How do I find an original TI version of the chip?
• What's the correct stencil for it?
• Who do I ask the vendor for a version with balls already on it?

Thanks !

 

[BamboszeK]

Looks like this chip is custom ASIC designed by TI for Onkyo. Sourcing this in official way probably gonna be nearly impossible.

 

[Shinja]

That chip may be imfamous faulty one?
UE22 Error Master Thread-Pioneer, are you listening? | AVS Forum
Even reballing may not cure the problem.

 

[MAAC0]

I remember watching a video for the Sony Playstation where they put the board inside an oven for a couple of minutes.