Question about Sharper Image SA253 CD Shelf System

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Tuner The numbers change but the station does not change.

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This sounds major.....

The signal detection used in both radios and TV sets is via special voltage sensitive diodes which alter capacity as the voltage across the diode changes.
You actually change the voltage across the diodes as you move the tuning dial.

In your case the diode only sees one voltage and is locked to a certain station, because you are not altering the capacity to re-tune to another station...

So it appears that you have lost the ability to alter the DC voltage across the diode...

The design of the tuning knob may be where this fault lies, where the physical action of turning the tuning knob does not transfer the mechanical action to the item that changes the DC voltage to the diode....maybe you have systen that uses a long cord would around pulleys that gives you nice control over the tuning maybe its just a broken tuning cord...
Maybe the tuning is done by just a simple variable resistor I'm not familiar with this system but I have given you the bascics to start on...Unplug the cord from the AC wall socket then remove the top of the cabinet and have a look to see what moves when you turn the tuning knob it will soon become apparent if there is nothing moving when you turn the knob and thus lead you on to the problem....
Maybe the knob is just loose on its drive shaft...

Cheers From YUBEUT

Posted on Nov 24, 2007


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Posted on Jan 02, 2017


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Otherwise, you need a set top box to watch TV. A digital to analog converter (the boxes that were available with the government coupon before the switch over) will give you over the air stations. The basic models only provide SD output; there are a few HD models available. Otherwise, you can use a satellite reciever, cable box (for digital cable service), or something like the Boxee or Sling with tuner. (There are a few different models of the Boxee; one added a tuner with a USB dongle. The newest model of the Boxee has the ATSC tuner built in.)

Note: OTA digital signal quality is either a strong enough signal for the tuner or no signal will be present. You need to point the antenna in the correct direction to receive the signal from your local transmitters. The type of antenna and its placement will also change the number of watchable channels. You can use or to get more information. Antennaweb assumes an outdoor antenna but gives a conservative list of stations. If the signal is split to several devices, you may need an amplifier to get a watchable signal. (Sometimes amplifiers fail and you won't receive any stations, so test without the splitter or amplifier by using a direct cable to one TV.)

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I just bought the RCA CD/DVD home theater system RTD206. I cant figure out how to change the radio channels. Also cant figure out how to change the cd disk tracks. Does this system have a remote. Or do...

The system does have a remote (at least it should come with one if purchased new), and you need it to control pretty much everything. Here's what the manual says about the radio tuner (you can find the whole manual here) :

Manual Tuning
1. Connect the FM aerial and the AM loop antenna at the back of the unit. Rotate the AM loop for
better reception.
2. Press TUNER to enter TUNER mode and toggle between FM and AM.
3. When the FM station broadcasts Stereo sound, ST is displayed.
4. Tune a station by pressing repeatedly the TUNER+/- buttons until the desired station is found.
Alternatively, you can press and hold the same buttons down for about one second to activate
the automatic search function. In this mode the player will automatically tune frequencies until
it finds a station.
5. Repeat step 4 to tune to another radio station.

Storing radio stations
The player can store up to 30 radio stations in its memory. You can enter every single radio station
yourself or the player can store all available radio stations automatically in ascending order.
Automatic preset programming
1. Press TUNER to enter the Tuner mode.
2. Press and hold TUNER down for 3 seconds to start automatic preset programming.
Note: A weak signal can affect the "Automatic preset programming" function's efficiency. Adjust the aerial for better
reception and a more efficient search.
3. Radio frequencies will be browsed and radio stations stored automaitcally. When all the available
radio stations are stored or all 30 memory locations are full, the auto preset programming
function will stop.

Manual preset
1. Tune to a radio station (see "Manual tuning" for details).
2. Press MEMORY once to enter flashing Preset Loaction number.
3. While the Preset Location number is still flashing, input your desired preset number (1-30) using
the numeric buttons or press the CH+/- buttons, then press MEMORY to store it.

Retrieving preset stations
1. Press TUNER to enter the Tuner mode.
2. Press CH+/- to search up or down for the preset stations or directly press the numeric buttons.

As you see, you really need that remote. The same is true for disc play. While there are front panel buttons for play/stop, disc skip, and drawer open/close, you don't have any other control without the remote. Without the remote control you'll find this system won't do too much, unfortunately. If you bought this new, check the packing material before you throw it away to make sure the remote's not still somewhere in the box. They often come tucked into slots on the foam inserts.

Also, when you hook the unit to a TV, it's just using the TV as a video display device. The TV has nothing to do with any of the system's other functions.

I hope you have luck locating the remote! Thanks for using Fixya.

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1 Answer

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