Soldering to a QFP that has broken pins - Maxtor HDD repair
Video Statistics and Information
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Channel: RetroGameModz
Views: 552,847
Rating: 4.7353082 out of 5
Keywords: HDD, hard disk, hard drive, hard disk drive, repair, QFP, broken pin, broken pins, solder, soldering, PCB, retrogamemodz
Id: xqkXvmvusws
Channel Id: undefined
Length: 49min 57sec (2997 seconds)
Published: Fri Mar 31 2017
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Very impressive! I love RetroGameModz's videos. He really knows what he's doing. I don't think I would have had the patience (not to mention the skill) to do what he did in this video.
FWIW, I have done similar soldering work and something that has helped a lot is old-school Ultra ATA 100/133 IDE Parallel Cables. They are basically 80-pin ribbon cables with a 0.025 inch (.635mm) pitch between conductors, which matches up nicely with many types of surface mount chip pins.
In a case of a repair like this, I'd simply cut off a segment of ribbon cable 7 conductors wide, strip the end to about 1/4 ", make a small bend to match up the pcb to the chip, make sure the wires are perfectly parallel, and then solder them all at once almost like is shown in the video with the normal pins on the chip. It can take out a lot of the tedium of soldering individual wires while risking unsoldering of wires that you've already placed, because the ribbon cable would keep the wires parallel.
Hmm, what's the gooey flux that you use over there? I'm looking for some nice flux to help remove bridges on QFP and QFN packages.
what is the tape you refer to in the video? I know you see it involved in re-worked boards a lot. Is it teflon tape?
I have to be honest I only watched the first few mins of the video... but wouldn't it have been easier to just find a matching old drive and swap the boards? Even just post or ask someone in IT for a matching board. Usually when drives fail it's from the heads hitting the platter not the circuit boards.
Edit. Yes an exact match for the drive.