You tube..... they probably did a single platter drive, which yes, can be done, but look at some of the multiplatters with baffles. They are tough to do with the proper tools, ( which start at about $800 USD ) and impossible to do without. The platter alignment will slip, you will contaminate the disk surface since you don't have a clean room, and you will end up with a very unstable drive. You also need to find a matched donor, which requires more than just the model number. I just ordered a 60 GB 2.5 inch donor for a case, it cost $135.00 plus shipping. As soon as you start matching the numbers you need, the price on that used drive goes up. You were looking for a 'disk reader' DeepSpar disk imager is about $3800 USD it is the best for reading disks with issues, however, it probably won't be able to read if the disk does not spin, and definitely not if the issue is heads. You really need to diagnose the problem first. To do a platter swap, you also need to basically do a head swap - at least in as far as taking two sets of heads off without destroying them and replacing, and if the problem is heads, then that is a somewhat simpler issue than the platter swap. I have done platter swaps in the clean room, with about a 50% success ratio - even for data recovery engineers, that is the LAST thing you try.