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I have been researching doing the screen replacement for a SP 8 that has a damaged screen. One of the things that was indicated to perform is a TDM Pre-repair but I cannot find any information how what that is and how to perform the steps. Can you provide information?
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For anyone else seeking this answer like me....
I just figured it out while preparing for a TDM repair on my own surface. There is absolutely no inforation on this whatsoever. BUT, i figured it out. I think. What i did was install the surface diagnostic toolkit, open the app, on the left side click the settings icon, then change the mode from "normal" to "technician" and then restart the app, there is now a drop down that gives you an option for repair setup and validation. There are now options for TDM repair setup, calibration and validation.
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This does not appear to work. There is no "mode" to change in the settings.
Just coming back later in the year to confirm the options to enable this TDM Replacement preparation mode is no longer in the SDT package, either the home or the business version, even options for command-line tools do not list this. I don;t know what that tool did to prep the system, but since rmeoving the SSD disables battery connectivity, it seems like that tool is not necessary. I'm going to just do the repair without it on a 7+, I'll report back if there is any problem.
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As near as I can tell, the software preparation step is unnecessary. The option appears to have been removed from every version of the software I could find. I was able to skip that step and replace the screen without any adverse effects. However, as long as the direction remains in the official Microsoft documentation, I recommend checking for it before tearing down the device.
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@twiztddwg Check this guide (video) Microsoft Surface Pro 7+ Repair at 2:25. Different version same idea. TDM just refers to Touch Display Module which is the complete screen with all layers
All of the steps listed under the Repair - Specific Precautions and Warnings
"Remove rSSD (removable Solid-State Drive) whenever TDM is removed from device. rSSD removal disconnects the battery from all device logical components for safety purposes. Refer to TDM pre-repair.
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This is essentially the same thing as I have found on YouTube from you for the SP 8 Pro. The information that I am trying to understand is the step to run the TDM Pre-Repair software preparation. I have not found any information on how to run that but everything I have read indicates that it is important to run that step before replacing the TDM.
@twiztddwg I have not come across anything that relates to software. Can you link a site where you 've read this? I would think that if it was such a vital step it would be in the repair manual
It is mentioned in your video at the 46 second mark:
https://www.youtube.com/watch?v=xaJXQ3d0...
Also mentioned on page 28 of the Surface Pro 8 English Service Guide that is also from your site:
Surface Pro 8 English Service Guide
Thanks
Virgil
@twiztddwg got it. They are talking about using the Microsoft Software Repair Tool Check https://www.dell.com/support/kbdoc/en-us... Looks like downloading this package the SDT is included. Give it a try and run it.
Thanks you that is getting me closer to things.
I will try this out on Monday and see what happens.
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A TDM Pre-Repair is Apple’s “Trusted Device Module” pre-repair process, which requires Apple’s internal diagnostic tools and can only be performed by authorized service providers before replacing parts like the screen.
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