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D200 Reassembly thread...
#17
    Seems like days since I was last here ;-) I just finished up all the PCB thermal pad installations. The one last pad that is absent in this pic is the one for the large squarish PSU ceramic ferrite heatsink pad missing in pic since I opted to install it in the relief pocket that Devialet CNC'd for it in the underside of the top. The mate to that one that goes inside the ceiling of the PSU cover is cut & ready to be applied as it will be the 'only' pad used inside that cover on reassembly. All other remaining 10 heat generating contact points under the cover that were previously handled by thermal pads will now be cooled by convection instead, least on a temporary basis. If I sense I'm leaving some additional cooling on the table I'll go back inside the cover and experiment with more pads as the cover is easily accessible/removable once belly pan is removed without disturbing primary PCB.

I still have the 2 largest pads to go, ie; the 26mm X 146mm one along the aluminum spine that is centered up/down between the GUI and the logo tab in the cover below it and attached to the digital cover box. And the massive digital cooling pad that is 60mm X 148mm that is sandwiched between the digital board bottom and belly pan floor. Those will be done upon final closure before reinitializing power. The pad responsible for making the belly pan so warm. And all I can say is I hope that belly pan gets hotter-than HELL! Reason being, that single thermal pad of this super efficient pad material alone is valued at over $409 US!!! The smaller one at $338.50 US!! By far & away the single biggest expense of this entire project! *note* Black lines in pic on pad protective covers are leftover ink measurement marks and not actual cuts in the pads as they appear. All pads are 1.5mm thick and one-piece save for the 3mm pads that are two-layer thicknesses and stacked. Basically all lower left quadrant pads in pic are dual thickness while all others are single-layer thickness pads. Devialet made this necessary by CNCing the lower left quadrant (ceiling when assembled) of housing 3mm deeper and only 1.5mm deep elsewhere and the thermal pad material I purchased is all 1.5mm thick requiring doubling up on some thicknesses.

The IEC in left upper corner of pic that replaces the PEM in my D200 needs to be twisted 180 degrees. That will cause me to lose the existing orientation of ground pin on top when viewed from rear straight on. Doesn't break my heart to do that as its always seemed "upside down" to me the way Devialet opts to install it via ground pin on top. But I do it for a good reason. If I leave it as-is I would have to remove the entire primary circuit board any time I wanted to remove just the IEC, the wires or the Devialet power board as the F'tech IEC wiring screws are located on the bottom and 'inside' the Devialet housing if I leave it as-is. If I rotate the IEC 180* the IEC wiring screws & the power board are accessible/removable with only the belly pan removed. Only inconvenience associated with this swap is I'll have to cross my line/neutral leads during installation but TONS easier than removing the entire PCB next time I have to chase an issue.

About all that remains after that is cleaning the fingerprint oils & smudges from the PCB then removing the thermal pad plastic protective covers and its ready to go home after putting an incredibly nice dust-free polish on the primary GUI screen and 2 optical covers on top of it and close her up. Every day now I'm more clearly than ever starting to see the light at the end of the tunnel. I'd like to say by Sunday/Monday but I won't due to recent events. If wishes were fishes...
Statements in my posts are opinion only, not to be construed as fact. Any projects I engage in are at my own risk! Their outcome cannot be assured and may result in success, small/no change or catastrophic failure. I encourage no one rely on anything I say or do as gospel and to realize your mileage may vary!
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Messages In This Thread
D200 Reassembly thread... - by Manoet - 15-Sep-2015, 02:04
RE: D200 Reassembly thread... - by absolutk - 18-Sep-2015, 08:51
RE: D200 Reassembly thread... - by Manoet - 18-Sep-2015, 13:35
RE: D200 Reassembly thread... - by brit - 18-Sep-2015, 14:42
RE: D200 Reassembly thread... - by Manoet - 18-Sep-2015, 15:45
RE: D200 Reassembly thread... - by GuillaumeB - 18-Sep-2015, 16:01
RE: D200 Reassembly thread... - by Manoet - 18-Sep-2015, 16:37
RE: D200 Reassembly thread... - by Manoet - 20-Sep-2015, 17:13
RE: D200 Reassembly thread... - by Manoet - 21-Sep-2015, 14:29
RE: D200 Reassembly thread... - by Manoet - 22-Sep-2015, 13:45
RE: D200 Reassembly thread... - by Manoet - 22-Sep-2015, 19:33
RE: D200 Reassembly thread... - by mauidan - 22-Sep-2015, 20:55
RE: D200 Reassembly thread... - by kenreau - 22-Sep-2015, 21:57
RE: D200 Reassembly thread... - by Manoet - 22-Sep-2015, 22:24
RE: D200 Reassembly thread... - by mauidan - 23-Sep-2015, 03:12
RE: D200 Reassembly thread... - by Manoet - 23-Sep-2015, 09:07
RE: D200 Reassembly thread... - by Manoet - 25-Sep-2015, 01:26
RE: D200 Reassembly thread... - by Manoet - 26-Sep-2015, 17:21
RE: D200 Reassembly thread... - by warpeon - 26-Sep-2015, 23:06
RE: D200 Reassembly thread... - by Manoet - 27-Sep-2015, 00:30
RE: D200 Reassembly thread... - by Manoet - 27-Sep-2015, 23:59
RE: D200 Reassembly thread... - by Manoet - 28-Sep-2015, 17:45
RE: D200 Reassembly thread... - by Jean-Marie - 28-Sep-2015, 18:54
RE: D200 Reassembly thread... - by kenreau - 28-Sep-2015, 19:21
RE: D200 Reassembly thread... - by Manoet - 28-Sep-2015, 19:36
RE: D200 Reassembly thread... - by Vincent - 28-Sep-2015, 19:44
RE: D200 Reassembly thread... - by Manoet - 28-Sep-2015, 20:08
RE: D200 Reassembly thread... - by Manoet - 28-Sep-2015, 20:09
RE: D200 Reassembly thread... - by Manoet - 28-Sep-2015, 20:11
RE: D200 Reassembly thread... - by Manoet - 28-Sep-2015, 20:19
RE: D200 Reassembly thread... - by Teliaved - 28-Sep-2015, 21:23

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