Question about Eton Satellit 750 AMFMSW Radio

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Faint & distorted audio on am sw & air

The radio was bought with no audio, i got the audio back on by replacing an opamp on the audio board & a zener diode that had burnt out but the fault now is faint & distorted audio on am ie sw & air band the later being the worst

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Hi I was the one who had the the Satellite 750 with the no audio fault I have borrowed a friends Radio to find out what had been burnt out,I found out it was a low dropout regulator that feeds a opamp it should supply 4 volts ,I have found out that the only known company who has these in stock is Mouser Electronics in Germany & they wont supply to England so i have ordered a variable voltage regulator pre built off ebay so I will link this with wires onto the Audio board,This radio has been working for a few months with a resistor feeding the op amp with 4 volts but the audio is a bit distorted at high volumes, the regulator should help I hope.

Posted on Jun 19, 2013

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  • Eton Master
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When I bought mine, I too thought it had no audio, until I opened the user's manual and read about the initial setup. After performing the steps described in the manual the sound came as if by magic.

Posted on Nov 06, 2012

Testimonial: "You did not say what you did but i think you mean a reset which i have already done,the problem with these sets is the lack of circuit diagrams thank you for taking the time to post a reply it might help someone who has a processor lock up many thanks again."

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IMO the tweak steps that should be made and order I suggest is good would be following

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Distorted sound, from any of the inputs


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Distortion


One word, No.

Distortion comes from the audio signal being clipped by one of your elements in the system.

What I would do first is measure the output of the radio with an oscilloscope to see if the signal is good. If it is then I would determine if the source of the distortion is the amplifiers or the speakers.

If it is the radio have that fixed or changed, If it it not, it might be a case of the radio overdriving the Amps causing them to clip the signal peaks. check for the max signal input of the amps and make sure the system is adjusted for that.

Let me know how this turns out.

Thank you,

Shuttle83

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