Can we talk about hitting 500 board repairs without a single callback?

I just crossed 500 logic board repairs for phones and laptops, and I'm honestly shocked not one has come back defective. On one hand it feels like luck, on the other maybe my process is actually solid - has anyone else hit a milestone like this and wondered if it's skill or just good fortune?

2 comments

2 Comments

skyler_adams28d ago

So the real question is how many of those repairs were on devices that had already been worked on by someone else before they got to you. I've noticed a big difference in callback rates between fresh boards and ones that have been cooked by another shop first. The ones that come in already reballed or with lifted pads from a previous attempt are way more likely to fail again a few months down the road, even if my work is clean. Are you tracking that split at all, or just counting total numbers?

charlie_allen28d ago

What about the thermal history of the board itself though? Boards that have been through multiple reflow cycles start to get microcracks in the solder mask and internal vias that you can't see. I've had fresh looking boards that never got touched by another shop, but the customer ran them hot for years with no thermal paste replacement, and those come back with the same chip failing again six months later. The dielectric material just breaks down over time from heat cycling, so even a perfect reball is sitting on compromised substrate. That hidden degradation is probably worse than any botched previous repair attempt.