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Current version by: Kyle Wiens ,

Title:

C1 capacitor for Powerbook G4 Titanium Onyx 550

Text:

I have an Onyx 550 showing no signs of life (light ring on power plug doesn't even light). Swapping in a known-good logic board confirms that something on the board is the problem. The C1 capacitor rattles when I shake the board, so I'm thinking it has dried out and simply replacing that might fix the problem. Do you know the full specs of the C1 capacitor?
 
Some specs I can read/see on the cap:
 
** surface mount design
*

*
Rubycon (manufacturer)
*

*
220 uF
*

*
35 V
*

*
105 degrees C (apparently the top end of the rated operating temperature range)
*

*
NO144 (not sure if that's exactly what it says or what it means)
*

*
10 mm diameter and 10 mm high
*

*
presumably this is an aluminum electrolytic type
** surface mount design
*

*
Rubycon (manufacturer)
*

*
220 uF
*

*
35 V
*

*
105 degrees C (apparently the top end of the rated operating temperature range)
*

*
NO144 (not sure if that's exactly what it says or what it means)
*

*
10 mm diameter and 10 mm high
*

*
presumably this is an aluminum electrolytic type
 
If I have all that right, then it narrows down the selection of caps at Mouser[http://www.mouser.com/Passive-Components/Capacitors/Aluminum-Electrolytic-Capacitors/Aluminum-Electrolytic-Capacitors-SMD/_/N-75hqx?P=1z0wrjqZ1z0sq5yZ1z0scm8Z1z0rxa7|Mouser] pretty well. See http://www.mouser.com/Passive-Components/Capacitors/Aluminum-Electrolytic-Capacitors/Aluminum-Electrolytic-Capacitors-SMD/_/N-75hqx?P=1z0wrjqZ1z0sq5yZ1z0scm8Z1z0rxa7.
If I have all that right, then it narrows down the selection of caps at Mouser[http://www.mouser.com/Passive-Components/Capacitors/Aluminum-Electrolytic-Capacitors/Aluminum-Electrolytic-Capacitors-SMD/_/N-75hqx?P=1z0wrjqZ1z0sq5yZ1z0scm8Z1z0rxa7|Mouser] pretty well. See http://www.mouser.com/Passive-Components/Capacitors/Aluminum-Electrolytic-Capacitors/Aluminum-Electrolytic-Capacitors-SMD/_/N-75hqx?P=1z0wrjqZ1z0sq5yZ1z0scm8Z1z0rxa7.
 
But there is at the least a question of the low-end temperature rating, and beyond that I would be happy to have someone confirm my overall assessment above.
 

dispositivo:

PowerBook G4 Titanium Onyx

Status:

open

Original post by: jdhupp ,

Title:

C1 capacitor for Powerbook G4 Titanium Onyx 550

Text:

I have an Onyx 550 showing no signs of life (light ring on power plug doesn't even light).  Swapping in a known-good logic board confirms that something on the board is the problem. The C1 capacitor rattles when I shake the board, so I'm thinking it has dried out and simply replacing that might fix the problem.  Do you know the full specs of the C1 capacitor?

Some specs I can read/see on the cap:

    * surface mount design
    * Rubycon (manufacturer)
    * 220 uF
    * 35 V
    * 105 degrees C (apparently the top end of the rated operating temperature range)
    * NO144 (not sure if that's exactly what it says or what it means)
    * 10 mm diameter and 10 mm high
    * presumably this is an aluminum electrolytic type

If I have all that right, then it narrows down the selection of caps at Mouser pretty well.  See http://www.mouser.com/Passive-Components/Capacitors/Aluminum-Electrolytic-Capacitors/Aluminum-Electrolytic-Capacitors-SMD/_/N-75hqx?P=1z0wrjqZ1z0sq5yZ1z0scm8Z1z0rxa7.  

But there is at the least a question of the low-end temperature rating, and beyond that I would be happy to have someone confirm my overall assessment above.

dispositivo:

PowerBook G4 Titanium Onyx

Status:

open