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projects:repair:powerbook_g4_17_1ghz:index [2009/02/08 00:21] – adminprojects:repair:powerbook_g4_17_1ghz:index [2009/02/23 14:17] (current) – admin
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-====== PowerBook G4 17 inch 1.0GHz ====== +====== PowerBook G4 17 inch 1.0GHz -> 1.33GHz ====== 
-This page describes a repair attempt of an Apple PowerBook, 17" 1.0GHz. The original fault was that the internal display did not work despite the presence of background light. The repair if this computer with multilayer circuit board has taken considerable time and painstaking efforts, especially because it's lacking schematic diagrams.\\ In the meantime the initial approach of repairing the logic board has been changed. Replacing parts made more sense than spending hours on troubleshooting onboard graphics. Prices on Ebay and other dealers are anyway reasonable.\\ After searching the internet a lot, it seemed that the mainboard (Apple calls it logic board) from the 1.0GHz model seemed to suffer quite frequently from the same problem. Therefore a better option seemed to be replacing the main board with that from a faster model, running at 1.33GHz. (This inhibited a few other differences as well, like Gb network instead of 100 Mb). Perhaps a more suitable title of this writing would be: **upgrading a 1.0GHz 17inch PowerBook into a 1.33GHz PowerBook**.+This page describes how to upgrade/convert a 1.0GHz 17inch PowerBook into a 1.33GHz PowerBook. After initially trying to repair a faulty 1.0 GHz logic board((The internal display did not work despite the presence of background light.)) it seemed to make more sense to replace it with a logic board from a faster model. (With the advantage of a Gb network instead of 100 Mb.) The replacement of the logic board inhibited a few other components which needed to be replaced as well. Because prices on Ebay and other dealers like ifixit are reasonable it's much better than repairing a computer with a multilayer circuit board which would take considerable time and painstaking efforts, especially because it's lacking schematic diagrams. Added to that, after searching the internet a lot, it seemed that the mainboard (Apple calls it logic board) from the 1.0GHz model seemed to suffer quite frequently from the same problem anyway, which was another good reason not to repair this, and instead replace it.
  
 ==== PowerBook models ==== ==== PowerBook models ====
-Searching the internet for more information about differences between the two models revealed a service manual from Apple, titled "PowerBook G4 (17-inch 1.33GHz) 16 September 2003"((Link: [[http://www.macbook-fr.com/IMG/pdf/pbg4_17_133.pdf]])). On page 2 it mentioned, in comparison with the 1.0 GHz model, the following information: +Searching the internet for more information about differences between the two models revealed a service manual from Apple, titled "PowerBook G4 (17-inch 1.33GHz) 16 September 2003"((Link: [[http://www.macbook-fr.com/IMG/pdf/pbg4_17_133.pdf]])). On page 2 it mentions some information, but not all. The real differences are: 
-  * **Flex cable compatibility**\\ The sound and modem flex cables are not interchangeable with the original PowerBook G4 (17-inch) system. The main logic board will be damaged. The correct flex cables have the word “POWERBOOK G4 17" 1.33GHZ ONLY.” +^  PowerBook 1.0 GHz  ^  PowerBook 1.33 GHz  ^ 
-  * **No L3 cache**\\ L3 cache is not used on this system. So unlike the previous model, there is no blue thermal pad on the logic board facing the keyboard. +| | **Flex cable compatibility**\\ The correct flex cables should have the word “POWERBOOK G4 17" 1.33GHz ONLY.” or “POWERBOOK G4 17" 1.33 GHz& 1.5 GHz”, as the 1.5 GHz version was not yet on the market by then, but Apple kept the same layout with the 1.5 GHz version.  | 
-  * **Thermal module interface**\\ Thermal gel is now used on the ATI Mobility Radeon 9600 graphics chip as well as the Intrepid chip. The thermal module is different from the previous 17-inch PowerBook. It has a different interface feature for the graphics chip and now has three heat pipes instead of one.+| | **No L3 cache**\\ L3 cache is not used on this system. So unlike the previous model, there is no blue thermal pad on the logic board facing the keyboard.  | 
 +| | **Thermal module interface**\\ Thermal gel is now used on the ATI Mobility Radeon 9600 graphics chip as well as the Intrepid chip. The thermal module is different from the previous 17-inch PowerBook. It has a different interface feature for the graphics chip and now has three heat pipes instead of one.  |
  
 === Ordering parts === === Ordering parts ===
 The information showed us, we would need two special flexcables and another thermal module interface. Therefore I ordered following parts at [[http://www.usedmac.com|usedmac.com]]: The information showed us, we would need two special flexcables and another thermal module interface. Therefore I ordered following parts at [[http://www.usedmac.com|usedmac.com]]:
-  * 1 x 922-6065 G4 Aluminum 17" Sound Cable (1.33GHz & 1.5GHz) only.+  * 1 x 922-6065 G4 Aluminum 17" Sound Cable (1.33GHz & 1.5GHz) only. (Note that the “1.33 GHz only” and the “1.33 GHz & 1.5 GHz ” are exactly the same cable)
   * 1 x 922-6066 PB G4 17" Aluminum 1.33/1.5/1.67 GHz Modem Flex Cable   * 1 x 922-6066 PB G4 17" Aluminum 1.33/1.5/1.67 GHz Modem Flex Cable
   * 1 x 922-6208 PowerBook G4 Al 17" Heat Sink & Fan (1.33GHz & 1.5GHz)   * 1 x 922-6208 PowerBook G4 Al 17" Heat Sink & Fan (1.33GHz & 1.5GHz)
 +  * Sound board for 1.33 GHz version. See below.
 +  * Modem board for 1.33 GHz version. See below.
  
 It was difficult to find proper replacement thermal conductive material. Roughly measured, the distance between the processor and thermal module was about 0.8mm. The Intrepid 2 and graphics chip should use thermal conductive gel. It was difficult to find proper replacement thermal conductive material. Roughly measured, the distance between the processor and thermal module was about 0.8mm. The Intrepid 2 and graphics chip should use thermal conductive gel.
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 A scan of both flexcables and sound boards revealed the following (click images for details. Pin 1 is marked with a 'V'): A scan of both flexcables and sound boards revealed the following (click images for details. Pin 1 is marked with a 'V'):
 ^  1.0 GHz  | ^  1.33 GHz  ^ ^  1.0 GHz  | ^  1.33 GHz  ^
-|  Sound Board:\\ {{http://www.nijdam.de/images/PowerBook_SoundBoard.1.0GHz.820-1373-A_1590x303.jpg?318x61 |Sound Board 1.0 GHz}} | | Sound Board:{{http://www.nijdam.de/images/PowerBook_SoundBoard.1.33GHz.820-1523-A_2479X479.jpg?495x96 |Sound Board 1.33 GHz}}  | +|  **Sound Board**  | |  **Sound Board**  ^ 
-|  {{http://www.nijdam.de/images/PowerBook_SoundBoard.1.0GHz.820-1373-A.bottom_1592x305.jpg?318x61 |Sound Board bottom 1.0 GHz}} | | {{http://www.nijdam.de/images/PowerBook_SoundBoard.1.33GHz.820-1523-A.bottom_2466x480.jpg?493x96 |Sound Board bottom 1.33 GHz}}  | +|  {{http://www.nijdam.de/images/PowerBook_SoundBoard.1.0GHz.820-1373-A_1590x303.jpg?400x76 |Sound Board 1.0 GHz}} | |  {{http://www.nijdam.de/images/PowerBook_SoundBoard.1.33GHz.820-1523-A_2479X479.jpg?400x77 |Sound Board 1.33 GHz}}  | 
-^  Sound Board flexcable 1.0 GHz  | ^  Sound Board flexcable 1.33 GHz  ^ +|  {{http://www.nijdam.de/images/PowerBook_SoundBoard.1.0GHz.820-1373-A.bottom_1592x305.jpg?400x77 |Sound Board bottom 1.0 GHz}} | | {{http://www.nijdam.de/images/PowerBook_SoundBoard.1.33GHz.820-1523-A.bottom_2466x480.jpg?400x78 |Sound Board bottom 1.33 GHz}}  | 
-|  {{http://www.nijdam.de/images/PowerBook_Flexcables.SoundBoard1.0GHz_3996x1043.jpg?399x104 |Sound Board flexcable 1.0 GHz}} | | {{http://www.nijdam.de/images/PowerBook_Flexcables.SoundBoard1.33GHz_3996x1043.jpg?399x104 |Sound Board flexcable 1.33 GHz}}  |+|  **Sound Board flexcable 1.0 GHz**  | |  **Sound Board flexcable 1.33 GHz**  | 
 +|  {{http://www.nijdam.de/images/PowerBook_Flexcables.SoundBoard1.0GHz_3996x1043.jpg?400x104 |Sound Board flexcable 1.0 GHz}} | | {{http://www.nijdam.de/images/PowerBook_Flexcables.SoundBoard1.33GHz_3996x1043.jpg?400x104 |Sound Board flexcable 1.33 GHz}}  |
 ^  logic board <- (pin layout) -> sound board  | ^  logic board <- (pin layout) -> sound board  ^ ^  logic board <- (pin layout) -> sound board  | ^  logic board <- (pin layout) -> sound board  ^
 |  3-6 <-> 1-4  | |  3 <-> 1  | |  3-6 <-> 1-4  | |  3 <-> 1  |
projects/repair/powerbook_g4_17_1ghz/index.1234048878.txt.gz · Last modified: 2009/02/08 00:21 by admin

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