[TechAssist] Mac M3705 Repeat Failure : Help!
- From: "Shoreline Electronics" <jstielau@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 5 Oct 2001 14:36:42 -0400
Make : Apple/Mac
Model : M3705
Problem : Repeat failure of QP1
This was the notes from our first time working on this :
QP1 Shorted in primary of the SMPS. Original was a SSP5N80. Replaced with a
SSP5N90 ( 5 amp / 900V). Also found CP67 (22uf/35) leaking and CL87
(2.2uf/250V) leaking & very high ESR. Black residue on traces.
The SSP5N90 was recommended to me as a higher voltage (900v?)
Is there any reason why this part would NOT be a good sub in this monitor.
We ran the monitor for 24 hours at the shop & no problems....customer uses
it for a few days and it's back!
We've ESR'd and checked all components in that area......any suggestions /
Tips?
Jeff Stielau
Shoreline Electronics Repair
125 Beechtree Lane
Westbrook,CT 06498
860-399-1861 Voice
860-664-3535 Fax
jstielau@xxxxxxxx
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