IMac G5 A1144

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

For more information, see this article's corresponding Wikipedia page: Device.

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.

Causes

Two visibly bad through hole capacitors identified on mainboard at positions C1309 and C8509.

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.

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	Temp	Type	Brand	Series
C3203	120 µF	16 v	Through Hole	105 °C	Electrolytic	United Chemi-Con	KY
C1309	1800 µF	6.3 v	Through Hole	105 °C	Electrolytic	United Chemi-Con	KZJ
C1202	680 µF	16 v	Through Hole	105 °C	Electrolytic	Panasonic	FL
C8502	680 µF	16 v	Through Hole	105 °C	Electrolytic	Panasonic	FL
C8503	680 µF	16 v	Through Hole	105 °C	Electrolytic	Panasonic	FL
C3253	120 µF	16 v	Through Hole	105 °C	Electrolytic	United Chemi-Con	KY
C8509	1800 µF	6.3 v	Through Hole	105 °C	Electrolytic	United Chemi-Con	KZJ
C1208	1500 µF	6.3 v	Through Hole	105 °C	Electrolytic	Panasonic	FL
C1209	1500 µF	6.3 v	Through Hole	105 °C	Electrolytic	Panasonic	FL
C1102	680 µF	16 v	Through Hole	105 °C	Electrolytic	Panasonic	FL
C1103	680 µF	16 v	Through Hole	105 °C	Electrolytic	Panasonic	FL
C1109	1500 µF	6.3 v	Through Hole	105 °C	Electrolytic	Panasonic	FL
C5034			Through Hole		Electrolytic
C5021			Through Hole		Electrolytic
C5011			Through Hole		Electrolytic
C3303			Through Hole		Electrolytic
C5033			Through Hole		Electrolytic
C5041			Through Hole		Electrolytic
C5040			Through Hole		Electrolytic
C5016			Through Hole		Electrolytic
C5026			Through Hole		Electrolytic
C5037			Through Hole		Electrolytic
C5017			Through Hole		Electrolytic
C5038			Through Hole		Electrolytic
C5028			Through Hole		Electrolytic
C5032			Through Hole		Electrolytic
C5043			Through Hole		Electrolytic
C5042			Through Hole		Electrolytic
C5039			Through Hole		Electrolytic

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

Replacement Parts

Basic PCB Name

Capacitors
RefDes	Qty	Compatible Part Number	Order Links
			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.

References

Apple iMac G5/1.9 17" (iSight) Specs (everymac.com)

iMac G5 17" Model A1144 Repair (ifixit.com)

iMac G5 (Wikipedia)