QC port on a Bosch 800 series fried my board

Went out to a call last Tuesday on a Bosch 800 series fridge, customer said it was beeping and not cooling. Found the QC port on the main control board had basically shorted out, melted the plastic around the pins. I've seen this on a few of these now, seems like moisture sneaks in behind that cap. Anyone else running into this regularly or am I just unlucky with my route?

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3 Comments

sarahpatel4mo ago

Hold up, I gotta push back on this a bit. You say the QC port on the Bosch 800 series "melted the plastic around the pins" and blame it on moisture, but I've worked on tons of these and honestly think it's more about people poking at those pins wrong. That port is meant for service techs, and if you're shoving a cheap multimeter probe in there or forcing a connector that doesn't fit, you're gonna get a short. The plastic melting is from a dead short caused by user error, not just moisture sneaking in. I bet if you look close, you'll see scorch marks right where a probe tip touched two pins at once, not random corrosion.

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noranguyen3mo ago

Could you check if the pins are pushed back or bent when you slide the connector in? Ive seen that happen a lot, and it causes intermittent shorts that eventually melt the plastic. Also, make sure youre using a Bosch-specific service cable, not some generic one from Amazon. The cheap ones have thicker pins that dont seat right.

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taylorlewis4mo ago

Poking at those pins wrong" is exactly it. People treat those ports like USB slots and just jam stuff in there.

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