Question about Sharper Image (SI721WHT) Clock Radio
Had this unit for years and it just stopped working with the power cord one day last week. Even though the female end of the cord snaps into the internal slot cleanly, it does not appear to be making or holding a solid connection. I'm thinking the internal prong that the plug envelops is out of alignment. Device seems to work with batteries, but I don't want to have to rely on them. Any ideas?
When you say 'power cord,' do you mean a detachable AC cord or is there an external power supply that plugs into and outlet?
Those are two different animals and if the receptacle end that plugs into the wall is a small box, you cannot replace it with a simple 2-wire cord as the small box is actually a primitive power supply.
If so, there should be rating printed on the flat side that faces the wall and will have something like '12VDC 200 mA'
If so, it has probably died.
Most connectors don't fail unless they are frequently plugged and unplugged as they are for camera chargers for example.
If you bring the modular supply to any electronics store, they will surely have a meter to see if anything is coming from the supply.
Alternately, you could buy a cheap digital multimeter and check it yourself.
There is a huge variety of universal 'wall warts' that will take the place of a dead one but you must be cautious about polarizing the supply output with the provided means; often simply plugging the wall end of the output cable in one way or the other.
If you incorreclty polarize the the clock end, you may damage the clock radio forever.
If you have a friendly Radio Shack store in your area, I would just bring both clock radio and its supply to them and ask them to check the supply and sell you the right one as a replacement if defective.
You may be able
Posted on Sep 03, 2008
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 Depress the MONTH/DATE and TIME buttons together. The display will change
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Battery back-up operation
* This clock radio is equipped with
a memory holding system that can
be powered with 2 "AA" batteries
(included). The power failure
protection circuit will not operate
unless battery is installed.
* When normal household power
is interrupted, or AC line cord
is unplugged, the batteries will
power the clock radio to keep
track of time and alarm settings
programmed into memory.
* When the battery backup functions,
the digital display will not light,
however, the function of alarm
still occurs during the power
interruption if remaining battery
power is adequate.
* Normal operation will resume after
AC power is restored so you will not
have to reset the time or the alarm
To install batteries:
1* Remove battery compartment door
(located at the bottom of the radio)
by applying thumb pressure to the
tab on battery door and then lift
the door out and off the cabinet
2* Insert 2 AA batteries (included).
3* Replace the compartment door
Replace batteries every year.
Power is fed to the unit even
when it is not functioning. To
cut the power supply off, the
power cable must be unplugged
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