Uher EG740 tuner from 1979 probably

27/10/2014 - 14:49 von N_Cook | Report spam
Used every day,on FM, until one day, switching on and very low level
audio out. Tuning is fine on FM and AM is normal. Phono and Aux inputs
to amplifier are normal. Schematic on elektrotanya. Nothing loose found
on twizzling. There are some ceramic resonator filters, I'm aware of
silver migration over such time spans , resulting in attenuation of
throughput, anything else to zero-in on?
Lots of Din connectors connecting tuner to preamp and amp, power ,
signal and control connections. Any advice on improving contacts other
than needle insertion to tension up the socket yokes a bit.
 

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#1 Helmut Wabnig
27/10/2014 - 22:22 | Warnen spam
On Mon, 27 Oct 2014 13:49:18 +0000, N_Cook wrote:

Used every day,on FM, until one day, switching on and very low level
audio out. Tuning is fine on FM and AM is normal. Phono and Aux inputs
to amplifier are normal. Schematic on elektrotanya. Nothing loose found
on twizzling. There are some ceramic resonator filters, I'm aware of
silver migration over such time spans , resulting in attenuation of
throughput, anything else to zero-in on?
Lots of Din connectors connecting tuner to preamp and amp, power ,
signal and control connections. Any advice on improving contacts other
than needle insertion to tension up the socket yokes a bit.




Contact spray
http://www.youtube.com/watch?v=q1BxYWlT2yc

w.

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