OT : A puzzlement - regarding my EMerson radio/cd/cassette player - any ideas?
annsan at nyc.rr.com
Fri Jul 29 17:58:15 EDT 2016
Well that solder joint idea that you and PJ mentioned is intriguing - I
was jsut sort of interested in it
turning out to be something that is , as they say today, "a thing". I
have left it on radio since I wrote earlier -
and just now I popped in a cassette and it played. So for now, I can
either just leave it on or turn it on ahead of when I want to listen :-)
On 7/29/2016 4:37 PM, Mark Roberts wrote:
> ann sanfedele wrote:
>> Mark -
>> The" power supply" is an outlet in my wall - is that what you mean?
> Nope. I was referring to the power supply internal to the boom box:
> Transformer, rectifier diodes, capacitors and several voltage
>> Yes, the same thing happened, in effect - with the tape and cd player...
>> it wouldnt come on ... and actually the cd player suddenly started playing
>> when I just left the cd I had in it sit.. and the tape player worked
>> and then didn't...
> So everything stays lit up and the tape or CD keeps moving physically
> but no sound comes out?
> It does sound like a bad voltage regulator. This is typically a linear
> regulator in these kinds of devices, a 3-pin integrated circuit
> device. It could even be just a bad solder joint which makes a
> connection only after it's reached a certain temperature. Hard to say
> without opening it up and having a look around inside.
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