Hi !! i have that mini hifi su-ch900 to repair but i got problem to find out the problem . The problem is when you turn up the music until the fan start , the unit just shut down . I try to bypass the SVi output ic , still doing the same thing , i test almost all the part into PSU , no faulty parts . I am also looking for the schematic !! Please somebody help me !! thanks Ian
TECHNICS SU-CH900
Sep 10, 2004
2 Replies
Ian!!!
We have exactly the same problem, please mail us with alll possibl ideas of HOW to fix this problem. If anyone else knows.....I woul ever be so in debt!!!
Sincerely
Loppa
loppan
This problem is often caused by the fan motor itself - particularly if it's the Mitsumi ' spindle motor ' type. The commutator gets noisy so when the fan starts up, you get spikes which cause the sytem control micro to shut the unit down. One stated cure was to add a 0.1uF capacitor directly across the fan motor, but failing this working, a replacement fan is often needed.
Hope this helps
Geoff
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