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Re: Help with partially fried QMX


 

Stan,

Thank you very much for your detailed reply. After trying some of your triage steps, I am observing that the GND, +12V, and VCC all exhibit continuity with each other on the compromised SMP board. It is important to note that male pins attached to the main board do not have this continuity, it is only present on the SMP board. I also did continuity checks on Q108 and see that all 3 leads have continuity. I'm unsure if this is a result of the blown component, or if it existed in some sort of compromised state prior to the failure.

I've also gone ahead and double checked all solder joints and looked for solder flakes or other potential areas that could cause unwanted connections. I'm still unable to find a bridge connection but will continue my search as I await my replacement components. Attached are some pictures of the places you suggested I inspect and labeled the pins showing continuity. I've also taken some photos of the area surrounding Q108.

Thank you again for your help and suggestions!
Austin K4HYD

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