Ok, old thread but could be helpful for newbies and for others too
I had the same problem (after 30 seconds the display shows fan-check, and ampilifier switches out in 30 seconds.)
For me I found a real solution:
there's a capacitor FC-2 (47microfarad, 16 V) at the output connector of the fan - it was short-circuited, zero ohm. Replaced, perfect...
Worth to check it!
Now, I can see after repairing, what happening:
at start the fan is out, but in 30 secs it starts to work, even if there's no real...
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