IMac G5 A1144: Difference between revisions

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{{WikipediaInfoAlt|Device}}
{{WikipediaInfoAlt|iMac G5}}
{{DeviceAlerts}}
{{DeviceAlerts}}
{{InfoboxDevice
{{InfoboxDevice
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Upon power-on, mouse pointer is displayed along with spinning wheel.  A repeating pattern of vertical lines is displayed on the screen.
Upon power-on, mouse pointer is displayed along with spinning wheel.  A repeating pattern of vertical lines is displayed on the screen.


Note: This particular unit's serial number, starting with W8, can include defective LCD screens, however, repair will be attempted as visibly bad components exist.
Note: This particular unit's serial number, starting with W8, can include defective LCD screens, however, repair will be attempted as visibly bad components exist near the GPU.


[[File:A1144 Failure Mode.jpg|none|thumb|Observed Fault]]
[[File:A1144 Failure Mode.jpg|none|thumb|Observed Fault]]


====Causes====
====Causes====
*Two visibly bad through hole capacitors identified on mainboard at positions C1309 and C8509.
*Two visibly bad through hole capacitors identified on mainboard at positions C1309 and C8509.  These are United Chemi-Con KZJ series 1800 uF 6.3v capacitors.  They are the only two examples of that component to the left of the GPU.  All other examples to the lower right of the CPU appear okay visually.
====Solutions====
====Solutions====
*Replacements parts will be ordered and repair attempted after recording the state of the board.  Due to other possible LCD failure, initial repair will include only the two visibly bad components.
*Replacements for C1309 and C8509 will be ordered and installed.


== Disassembly Notes ==
== Disassembly Notes ==
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|16 v
|16 v
|Through Hole
|Through Hole
|
|6.5 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 65: Line 65:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 77: Line 77:
|16 v
|16 v
|Through Hole
|Through Hole
|
|10 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 89: Line 89:
|16 v
|16 v
|Through Hole
|Through Hole
|
|10 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 101: Line 101:
|16 v
|16 v
|Through Hole
|Through Hole
|
|10 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 113: Line 113:
|16 v
|16 v
|Through Hole
|Through Hole
|
|6.5 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 125: Line 125:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
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|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
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|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
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|16 v
|16 v
|Through Hole
|Through Hole
|
|10 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
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|16 v
|16 v
|Through Hole
|Through Hole
|
|10 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
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|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
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|16 v
|16 v
|Through Hole
|Through Hole
|
|10 mm
|
|15 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
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|16 v
|16 v
|Through Hole
|Through Hole
|
|10 mm
|
|15 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 221: Line 221:
|16 v
|16 v
|Through Hole
|Through Hole
|
|10 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 233: Line 233:
|16 v
|16 v
|Through Hole
|Through Hole
|
|6.5 mm
|
|12.5 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 245: Line 245:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 257: Line 257:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 269: Line 269:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 281: Line 281:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 293: Line 293:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 305: Line 305:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 317: Line 317:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 329: Line 329:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 341: Line 341:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 353: Line 353:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 365: Line 365:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 377: Line 377:
|6.3 v
|6.3 v
|Through Hole
|Through Hole
|
|10 mm
|
|14 mm
|
|5 mm
|105 °C
|105 °C
|Electrolytic
|Electrolytic
Line 386: Line 386:
|}
|}
The markings for C5033 and C5041 will likely be obscured by the CPU foam. On this revision, C5033 is on the left and C5041 on the right
The markings for C5033 and C5041 will likely be obscured by the CPU foam. On this revision, C5033 is on the left and C5041 on the right
There are numerous surface mount caps on this board.  I have not attempted to survey them yet. No leakage is observed
''All physical measurements are via measurement, rather than manufacturer specification, and may be imprecise.''
I have not attempted to catalog the surface mount caps of this board yet.


==Replacement Parts==
==Replacement Parts==
===Basic PCB Name===
 
{| class="wikitable sortable"
{| class="wikitable sortable"
|+Capacitors
|+Capacitors
! RefDes
! RefDes
! Qty
! Compatible Part Number
! Compatible Part Number
! Order Links
! Order Links
|-
|-
|
|C1309
|
|EEU-FR0J182B
|
|[https://www.digikey.com/en/products/detail/panasonic-electronic-components/EEU-FR0J182B/2504096 DigiKey]
|[https://www.digikey.com/ Digikey]
|-
|C8509
|EEU-FR0J182B
|[https://www.digikey.com/en/products/detail/panasonic-electronic-components/EEU-FR0J182B/2504096 DigiKey]
|}
|}
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''
''If parts are not available or different selection is preferred, you can use the values in the [[#Original_Parts|Original Parts]] section to perform a parametric search.''
Line 406: Line 414:


== References ==
== References ==
[https://everymac.com/systems/apple/imac/specs/imac_g5_1.9_17.html Apple iMac G5/1.9 17" (iSight) Specs (everymac.com)]
*[https://everymac.com/systems/apple/imac/specs/imac_g5_1.9_17.html Apple iMac G5/1.9 17" (iSight) Specs (everymac.com)]
 
*[https://www.ifixit.com/Device/iMac_G5_17%22_Model_A1144 iMac G5 17" Model A1144 Repair (ifixit.com)]
[https://www.ifixit.com/Device/iMac_G5_17%22_Model_A1144 iMac G5 17" Model A1144 Repair (ifixit.com)]
*[[wikipedia:IMac_G5|iMac G5 (Wikipedia)]]


[[wikipedia:IMac_G5|iMac G5 (Wikipedia)]]
[[Category:Apple]]
[[Category:Computer]]

Latest revision as of 18:35, 27 November 2024

For more information, see this article's corresponding Wikipedia page: iMac G5.
Apple iMac G5/1.9 17" (iSight) (A1144)
Preliminary Information
Release Year 2005
Leak Risk Medium
Batteries CR2032
Mounting Technology Though Hole, SMD
Capacitor Types Aluminum Electrolytic
Destructive Entry No

The Apple iMac G5/1.9 17" (iSight (A1144) was the final PowerPC based Macintosh released by Apple prior to the Intel transition.

Known Issues

Symptom or Problem Encountered

Upon power-on, mouse pointer is displayed along with spinning wheel. A repeating pattern of vertical lines is displayed on the screen.

Note: This particular unit's serial number, starting with W8, can include defective LCD screens, however, repair will be attempted as visibly bad components exist near the GPU.

Observed Fault

Causes

  • Two visibly bad through hole capacitors identified on mainboard at positions C1309 and C8509. These are United Chemi-Con KZJ series 1800 uF 6.3v capacitors. They are the only two examples of that component to the left of the GPU. All other examples to the lower right of the CPU appear okay visually.

Solutions

  • Replacements for C1309 and C8509 will be ordered and installed.

Disassembly Notes

The iFixIt guide is essential when working on this machine. Disassembly is not difficult but there are many steps required. All capacitors are located on the underside of the board and cannot be inspected without removal of the mainboard from the chasis.

Original Parts

Motherboard

Apple 820-1783-A

Capacitor Specifications and Footprint Information
RefDes Capacitance Voltage Mount Diameter/Size Height Lead Spacing Temp Type Brand Series
C3203 120 µF 16 v Through Hole 6.5 mm 12.5 mm 5 mm 105 °C Electrolytic United Chemi-Con KY
C1309 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C1202 680 µF 16 v Through Hole 10 mm 12.5 mm 5 mm 105 °C Electrolytic Panasonic FL
C8502 680 µF 16 v Through Hole 10 mm 12.5 mm 5 mm 105 °C Electrolytic Panasonic FL
C8503 680 µF 16 v Through Hole 10 mm 12.5 mm 5 mm 105 °C Electrolytic Panasonic FL
C3253 120 µF 16 v Through Hole 6.5 mm 12.5 mm 5 mm 105 °C Electrolytic United Chemi-Con KY
C8509 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C1208 1500 µF 6.3 v Through Hole 10 mm 12.5 mm 5 mm 105 °C Electrolytic Panasonic FL
C1209 1500 µF 6.3 v Through Hole 10 mm 12.5 mm 5 mm 105 °C Electrolytic Panasonic FL
C1102 680 µF 16 v Through Hole 10 mm 12.5 mm 5 mm 105 °C Electrolytic Panasonic FL
C1103 680 µF 16 v Through Hole 10 mm 12.5 mm 5 mm 105 °C Electrolytic Panasonic FL
C1109 1500 µF 6.3 v Through Hole 10 mm 12.5 mm 5 mm 105 °C Electrolytic Panasonic FL
C5034 1000 µF 16 v Through Hole 10 mm 15 mm 5 mm 105 °C Electrolytic Rubycon MCZ
C5021 1000 µF 16 v Through Hole 10 mm 15 mm 5 mm 105 °C Electrolytic Rubycon MCZ
C5011 680 µF 16 v Through Hole 10 mm 12.5 mm 5 mm 105 °C Electrolytic Panasonic FL
C3303 120 µF 16 v Through Hole 6.5 mm 12.5 mm 5 mm 105 °C Electrolytic United Chemi-Con KY
C5033 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5041 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5040 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5032 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5042 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5039 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5043 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5028 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5038 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5018 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5037 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ
C5017 1800 µF 6.3 v Through Hole 10 mm 14 mm 5 mm 105 °C Electrolytic United Chemi-Con KZJ

The markings for C5033 and C5041 will likely be obscured by the CPU foam. On this revision, C5033 is on the left and C5041 on the right

There are numerous surface mount caps on this board. I have not attempted to survey them yet. No leakage is observed

All physical measurements are via measurement, rather than manufacturer specification, and may be imprecise.

I have not attempted to catalog the surface mount caps of this board yet.

Replacement Parts

Capacitors
RefDes Compatible Part Number Order Links
C1309 EEU-FR0J182B DigiKey
C8509 EEU-FR0J182B DigiKey

If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

Related Links

References

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