Dial tuner broken! how to fix?

The On/Off switch and the 'Tuner' are two separate switches on a radio. Sounds like the 'tuner', ability to switch stations is functioning but the On/Off switch is broken. Either a radio repair shop can fix it or you probably can find one in a wrecking yard for $50.00 to $75.00 that will work and will less expensive then fixing you present radio. Bring the vehicle to a radio repair shop and have it checked out and then make the decision based on the costs.

There is or was a mechanical system of wheels, pulleys and a dial cord that was moved b turning the knob on the side. . A wheel, pulley, or cord is broken or out of place, broken, stripped, or stretched, I would guess broken because 35 year old plastic is fragile and the dial has to be tight enough to break small plastic holders, Going out and catching that little bird, and replacing it in a coo coo clock would be easer to do than repair it properly. Sorry!
You will probably have better luck finding a 35 year old bird than a 35 year old radio part

PIONEER VSX-D903S - A/V Receiver
PIONEER CU-VSX079 - Remote

Here's the basics: Make sure your receiver is in the Tuner mode, by selecting Tuner on either the remote (grey button), on the receiver, or from the GUI menu. (The display will also show TUNER.) There are a couple of different ways to tune a station. One method is with the remote. Use the Band button on the remote (or via the GUI display), or the FM/AM button on the receiver, to select the frequency type. Use the Freq/Ch buttons on the remote to tune, the number buttons for presets (30 presets total. Examples: Preset 5, simply press 5; Preset 15, enter 5-5; Preset 25, enter 5-5-5). You can also use the on-screen GUI menu and the remote to tune stations, using the lower grey buttons. If you want to tune directly, via the receiver, press Select, to switch between frequency tuning and presets (displays ST CALL) mode. Use the Multi-Jog dial to make your selection in either mode. The easiest way to program a station into a preset is to use the onscreen GUI menu. [NOTE: The GUI mode (TV Monitor Video Out, composite video) is active when an amber (orange) ring glows around the Multi-Jog dial (the GUI button on the receiver will also glow simultaneously). Use the remote lower grey buttons, or use the Multi-Jog dial and Select, to move the cursor and select commands on the TV. This A/V Receiver handles composite video/S-video, and Stereo/Dolby 3-Channel/Dolby Pro-Logic audio only. (Pre-ATSC/HD video, Pre-Dolby Digital/DTS multi-channel surround audio)]

TAKE THE KNOB FO AND SEE IF IT WILL TURN BUY HAND IF SO JUST PUT A BIT OF PAPER ROUND IT AND PUSH THE KNOB BACK ON AND IT SHUOD GO

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You need to use the remote control to access the radio station frequencies.
Follow the instructions below:


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Jas247

OK,this is a fairly common problem with digital tuners, I get them from time to time in my shop, you see, what is happening is the voltage that's used to tune the set, usual;y stays rock solid, your device however is drifting off station due to this voltage changing, usually it is in the powers supply or the actual tuner itself. It can be bad capacitors, bad IC's, bad transistors, bad tuner module. Sometimes it maybe a "Dry Joint" too.
The only fix is either a replacement PSU or Tuner or indeed maybe both? One simply cannot tell exactly without examining the unit.

You need to take this unit into a Denon repair center and ask for a "Quote" as to costings etc. Once appraised of that one can proceed from there?
Contact a Denon head or local office and ask them there, for a referral to an authorised service center.

I have a Proton car but I have never heard of a Proton radio.

As a matter of general interest, the flywheel tuning system was used on early radios before the superheterodyne system brought us agc lines and such sophistications. Selecting another station was a noisy business and flywheel tuning allowed the dial to be traversed quickly with a flick of the wrist. Those flywheels were heavy and mounted in ball bearings...

The trouble with trying to obtain spare parts for radios is mostly you can't. The manufacturer uses mostly bought-in standard electronic and hardware components and makes as little as possible, apart from the cabinet, the circuit boards and a few other bits and pieces and then will assemble what is generally regarded as a consumable item. The manufacturer's interest fades quickly when the warranty expires. Whatever (few) parts remain will be priced not to sell in order to build in obsolescence.
It is mostly expected that minor repairs will be handled by local repairers using standard parts until it becomes uneconomic or obsolete.

It might be possible to locate another plastic "flywheel" but searching would be a mammoth task. The number might not be a part number, might have been made by anyone and Proton is such a popular brand, model, type a search would not be easy.
The best alternative is to repair the original, adapt something else to do the same job or have a replacement made or devise another method of doing the same job.

Good Luck!

Mike, Where do you grese the unit??

I have the same problem and not just with the FM tuner. I have spoken to Aluratek about the sluggishness of this radio. Their reply was to not push the buttons ore than once. The radio will eventually work.

I have a Republic EZ drop fertilizer spreader. The gray plastic device (2 pieces, one screwed inside the other) up by the push handle that rotates to widen or narrow the slot at the bottom of the fertilizer storage bin when the handle is squeezed is broken. The cable connecting the device to the movable part of the slot is OK. The gray plastic has numbers on it that show through a small square opening in the gray plastic closest to the push handle. Where can I get a replacement part?