Reduced Volume and Buzz with mains power
Recently returned to Australia from US with this Radio.
Initially used a 240 Volt to 6 volt DC 300 mA mains convertor. Manual suggested 300Ma minimum, although 500 mA supplied.
Worked well on mains until internal batteries discharged.
Now Volume has dramatically reduced (even with Batteries) and there is a "Humm" when the mains are used. I have now obtained a 500 mA adaptor.
Was the 300 mA the probelm? Is there an easy fix?
I wont be returning to the US for some time.
Thanks
Initially used a 240 Volt to 6 volt DC 300 mA mains convertor. Manual suggested 300Ma minimum, although 500 mA supplied.
Worked well on mains until internal batteries discharged.
Now Volume has dramatically reduced (even with Batteries) and there is a "Humm" when the mains are used. I have now obtained a 500 mA adaptor.
Was the 300 mA the probelm? Is there an easy fix?
I wont be returning to the US for some time.
Thanks
Audio Players & Recorders - Grundig - S350 AM/FM/SW Radio
Answers & Comments
Hi and welcome to FixYa,
Offhand, the humming is from the adapter/power supply. It indicates that the load (radio + charging the battery) was above capacity of the adapter/power supply and/or the internal capacitor is due for replacement. 500mA would be better than 300mA both @ 6V.
The reduced volume could be as simple as a partially faulty speaker, a dirty contact volume control to a faulty amplifier. This then would require a looking into by a qualified technician.
Good luck and Thank you for using FixYa. Happy Holidays.
Its due to the battery and internal circuit board any of the small component on the board is got weak and not producing proper sound to the radio.just check out with a meter and replace the weak .
I don't think this is because of the AC adapter, looks more like a short or a faulty component inside, maybe there is a short or one of the capacitors had blown. The radio must be taken apart and tested to find out.