"Richard Steinfeld" wrote:
> | Hi all,
> | I notice quite a few folks mentioning power on/off issues
> | various Hyundai OE radios. My daughter has been complaining
> | that the Kenwood radio in our ’04 GT has been turning itself
> off all
> | by itself and will not turn back on without having to reset
> | the internal reset button. This happens both at initial
> start-up of
> | the car as well as when just running around. Apparently
> kind of
> | behavior is a known condition and I’m gathering that
> replacement is
> | the only real cure. My question is: how likely is it that
> | radio will be any better? The reason I ask is that I have
> | many, many aftermarket radios in my lifetime and I figure,
> the dash
> | is going to be opened up, I might as well put a new (better)
> unit in.
> | They are so inexpensive for the function these days that
> | become pretty much throwaways.
> | Any comments or opinions?
> I brought this issue to the antique radio newsgroup since
> hands-on electronics folks. We batted it around a bit. My
> suspicion is that the problem is caused by that nasty little
> new-fangled volume control -- the type that's so
> automatically-electronic that its last position is stored in
> computer memory -- it is not a traditional mechanical control.
> has no "full down" stop, but rotates continuously. All of its
> control is performed by reference to the last stored position,
> not the control's actual physical position (got that?). I
> like, who needs this? It's user-hostile design.
> The part is being made by some supplier, and being sold to
> various companies. I think that the failure is caused by a
> unsecured part inside the control, which has a conventional
> "on/off" feel, but in fact, isn't a mechanical switch. Hitting
> bump causes that part to make brief contact, which turns the
> radio on. Note that in every case when the radio has
> in two Hyundais, the failure mode has been that hitting a bump
> turns the radio on. When the radio is on, the opposite doesn't
> happen: the radio stays on.
> Does anyone know of a brand other than Hyundai in which this
Thanks for the input. I would suspect you’re right although, in my
particular case, I don’t know that I can tie the event to a bump in
the road (so to speak) or some other shock/vibration event.
You’re right about the "user-hostile" design with respect to these
new logic-controlled power switches and other controls. I have seen
power anomalies cause these things to do all sorts of weird things on
other types of equipment besides car stereos.
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