Re: Pioneer sx-727 radio dead

On Apr 27, 12:05 am, "Mr. Land" <grafton...@xxxxxxxxx> wrote:
On Apr 26, 9:59 am, tx7...@xxxxxxxxx wrote:

I have a pioneer sx-727 receiver, I'm the original owner (33 years).
Recently the radio stopped working.
Everything else works great.
FM, AM  no difference does NOT work.
The tuning meter does not move as I turn the tuning dial.
If I turn the volume up, I can hear some static thru the speakers.
Occasionally the radio will spontaneously work for a while,
and then return to this dead mode.
All the other inputs cd, turntable work fine.
Any ideas what the problem might be?
Thanks.

I worked on a bunch of these in a previous life.

It has been a long time, but I seem to remember a common problem of a
voltage regulator in the power supply section becoming thermally/
mechanically/whateverly intermittent.  If the entire tuner section is
going dead, this might be worth looking for.  Seems a reasonable
candidate if the tuner works occasionally as you stated.

Look for a 3-pin voltage regulator in a TO-220 case - might not even
be on a heatsink.  Try tapping it with something non-conductive, or
heating it, or freezing it, or, you might actually measure its output
voltage.  Worth a quick look, I suppose.

Whoops, sorry, I missed the last reply or two. I guess mine was
redundant/unnecessary.
.

Relevant Pages

  • Re: Pioneer sx-727 radio dead
    ... Recently the radio stopped working. ... The tuning meter does not move as I turn the tuning dial. ... Look for a 3-pin voltage regulator in a TO-220 case - might not even ... Worth a quick look, I suppose. ...
    (sci.electronics.repair)
  • Pioneer sx-727 radio dead
    ... I have a pioneer sx-727 receiver, I'm the original owner. ... Recently the radio stopped working. ... The tuning meter does not move as I turn the tuning dial. ...
    (sci.electronics.repair)
Loading