Question about Audio Players & Recorders
I have a Technics su-x501 and have very low sound levels even when the amp is turned up full. it is the same for the headphone, you can barely hear them even with the amp up full. The fan does not run, but i understand this only comes on when it get hot. i have checked for crossed cables at speakers and amp. checked all the simple stuff like balance control, mute button. from what i have read elsewhere this is a common problem, but can't find a solution yet. Thanks Steve
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Posted on Jan 02, 2017
SOURCE: My technics se hd 51
please bring a good contact cleaner from radio shack near you and apply the spray over the socket of the headphone(the place where you put your headphone jack)take headphone jack out and apply spray in and insert the jack in and out many times.-also check your system setup and confirm that all speaker are on- no mute button pressed-no cable is disconnected.
Posted on Jul 13, 2008
Usually this is a defect in the output amp IC. If you have no experience with repairs of these types of units, have it checked by a service shop. If the output AMP IChas failed, it will cost about $75 for a replacement. This unit uses an RSN3306P IC .
Posted on Mar 15, 2010
I've suspected that your main problem is the output amplifier stage, since when you turned the volume way up you slightly hear the sound, meaning your pre-amplifier stage is working. The most common defect is the output Transistor/IC and its coupling/bias electrolytic capacitors. This kind of problem needs to attend by an experienced technician to confirmed where the fault is. Also, you have to consider bad solder joints in that area. This will do the same symptom if there is a cold solder/dry joints.
Hope I helped you.
Have a nice day!
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Posted on Mar 07, 2011
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