I have a t862 ir station, i am trying to desolder a rom chip from a seagate laptop thin pcb. after several minutes the solder dosent even soften. any ideas on settings or solutions.
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| Author: | jessicawcat [ October 22nd, 2018, 16:34 ] |
| Post subject: | rom chip desolder |
I have a t862 ir station, i am trying to desolder a rom chip from a seagate laptop thin pcb. after several minutes the solder dosent even soften. any ideas on settings or solutions.
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| Author: | LarrySabo [ October 22nd, 2018, 21:21 ] |
| Post subject: | Re: rom chip desolder |
The T862 has lousy temperature control -- it's the last thing you want to use to desolder ROM ICs. With many drives, if you over-heat the ROM it's bye-bye to ever recovering the data. For a more cautious approach, I use a preheater set to 215C and a hot air SMT rework tool (wand), along with flux, to lift the ROM once the circuit board is stabilized at 215C. Lead-free solder used on these boards melts at 217C, so it doesn't take a lot of top heat to free the ROM. |
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| Author: | dick [ October 23rd, 2018, 8:08 ] |
| Post subject: | Re: rom chip desolder |
I use an Atten 850b hot air rework station. Normally I would apply flux to the rom and then apply the hot air for a few seconds until the solder flows and remove the chip. If the solder is hard and doesn't flow easily I would use a small iron and apply leaded solder to each ic pin. Then using the hot air should allow the solder to flow freely. |
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