![]() Not picking up stations, it could be you live in an area with bad reception or too much interference. These early transistor radios (popularly known as 'trannies') used. The junction transistor, invented in 1951, was much more reliable, and radios using transistors instead of valves started to appear in the mid to late '50s. The audio amplifier contains a single ended push-pull out- put stage, which is driven by a complementary pair of driver transistors. After 8 months, the sound has reduced drastically, I replaced batteries, but the sound is still low. Other components can and do fail occasionally, but these will generally become apparent as fault-finding progresses. The transistor was invented in 1947, but early point contact types were delicate, unreliable and performed poorly. I have a fm/am/sw radio with removable R20 batteries. In order of likeliness they are: Electromechanical faults. Distortion & squealing, possibly a bad transistor is also a cause of bad capacitors. There are three main types of problem that can stop a transistor radio working. Sonic Aire 1960s Transistor AM FM Radio AFC 10 TR Model SA-132, low volume Quantity. The radio itself is excellent, but the pocketability of it means it has to have a. Scratchy audio, Volume control wiper needs to be tested and cleaned. The JBL Tuner 2 is a very portable and rugged DAB/FM radio that also doubles as a Bluetooth speaker. A bigger current makes a louder sound with more volume a smaller current makes a quieter sound with less volume. Turning the volume knob adjusts an electronic component called a variable resistor or potentiometer, which increases or decreases the electric current flowing to the loudspeaker. ![]() ![]() I think that you may have accidentally blown the power transistors in the amp, possibly when you connected it up again. Low volume, Bad electrolytic, see repair process below. Volume control: This is the back of the volume knob. Never test before or else cause i was waiting to set up the wires on the new place in the wall " bla, bla, bla"Īnd i always take care of the receiver, turn down volume, ventilation to do not get to hot, you knowĭo you think that these speakers (ebay, maybe they lie to me and is why the receiver is screw up now) could be the problem to get my power transistor burnt, if these is the problem, if only if speaker can do that, i do not think so but you are the smart not me , I bought 2 speaker( no new ) to replace the small front speaker When i moved the avr and speakers, to a new place I have a new question about these matter of the receiver noise. You been helping in these matter, and so thankful for that
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