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Harman/Kardon Tuner TU920 repair - schematic?

J

jo

Jan 1, 1970
0
Hi
I am looking for assistane in repairing a TU920 tuner.
I don't have the schematic, so that would already help me a lot.
The following happens: when working set to 220VAC (mains = 230VAC) the
output signal is very low.
when set to 240AC (I suppose the internal voltage supply drops - if no dc
regulator is used) the output signal is very loud but also distorted (as if
clipping occured on the output stage!)
so, without a schematic, i am looking for a needle in a haystack. any hints
will be appreciated

Have a nice day
 
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