2007 ECBM repair?
#1
Racer
Thread Starter
2007 EBCM repair?
I've seen guides for how to repair bad solders on C5 EBCMs, and seen people mention it's possible on C6s. I've gotten this far:
I've got the three screws out that hold this PCB onto the case, but am unsure if there's a way to separate the two? The connector on the other side of the case surely connects to the PCB in some manner. Gently pulling on the PCB does nothing, and I don't want to damage anything by pulling too hard. Does anyone know if there's a way to separate them?
Thanks. There are a few questionable-looking joints on top I'm going to reflow, but I'd really like to get to everything underneath too. I'm guessing the brownish stain is a sign of water intrusion. Or maybe just excess flux.
I've got the three screws out that hold this PCB onto the case, but am unsure if there's a way to separate the two? The connector on the other side of the case surely connects to the PCB in some manner. Gently pulling on the PCB does nothing, and I don't want to damage anything by pulling too hard. Does anyone know if there's a way to separate them?
Thanks. There are a few questionable-looking joints on top I'm going to reflow, but I'd really like to get to everything underneath too. I'm guessing the brownish stain is a sign of water intrusion. Or maybe just excess flux.
Last edited by GrantB; 08-07-2021 at 01:05 PM.
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GrantB (08-07-2021)
#4
Heat gun on the back side of the metal case to warm it up to soften the sealant, since there are a few spots of sealant on the bottom of the board that holds it to the inside of the case as well. Don't use heat directly to the board side.
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GrantB (08-08-2021)
#5
Racer
Thread Starter
Once the sealant is soft, how hard do you need to pull the PCB to get it out of the case?
Last edited by GrantB; 08-08-2021 at 12:32 AM.
#6
Racer
Thread Starter
Well I pulled the unit off again to try a heat gun. I made a tool to hook around the edge of the PCB so I could pull it out, and it definitely seems like it is glued somewhere along the bottom. However leaving the heat gun on it and pulling as hard as I dare still doesn't budge it. Has anyone else had success with this? If so is there a specific spot you concentrated the heat?
Thanks. I may also try an oven; I bet the PCB components are rated to 125C.
Thanks. I may also try an oven; I bet the PCB components are rated to 125C.
Last edited by GrantB; 09-01-2021 at 08:24 PM.