I have a Yamaha CR-820 unit and cannot receive an FM signal. AM is fine. Also the FM meter reads as no signal. Please help.

If you are inclined to try to service this unit the first step is to download a service manual, this is a sight that has a copy of the manual for download for a price

http://www.marantz.owner-manuals.com/ST48-service-manual-MARANTZ.html

you will require some hand tools, soldering iron and desoldering brade and some solder, multi meter and some type of signal tracing device like and oscilloscope or and audio tracing amplifier.
Look for missing power supply's to your RF front-end circuits and FM discriminator , also track down the analog switching ic to varrifie that this unit is functioning and selecting the FM circuits
if you still kneed help contact me further with your findings and a copy of the service guide

Have a good day and good luck
Best regards Falco

Best bet for you is to get the shop service manual/try to google for it.

One of the RF gains stages is not working, or there's a self-oscillation in the receiver. I'm afraid it needs to go to a Kenwood shop or their service center.

Take the cover off and look at the cable that connects the tuner to the main board. Make sure it is connected straight and tight. Make sure all screws in the back are tight, just in case it is a grounding issue. Iff all checks out and you still have issues, replace your tuner.

I look for a shop that is clean, professional, and leaves a good impression it will be taken care of, you should be able find a suitable one in Melbourne.

The pivot that balances the fm signal meter has jammed, it would have to be taken apart, the outer lens removed to attempt a repair, this is a very tricky operation, if you hit the receiver on the side nearest to the meter, the needle should move back and forth freely,"indicating the meter is good" but if it fails to move the mechanical part of the meter is faulty.

did you found the problem,mine has the sam problems...reception not very loud on ssb,am fm very good...

you may be in an area where am stations don't come in,, am uses straight lines of frequency where FM uses a modulated signal, which travels much farther, I bought a antenna signal booster from radio shack for a few dollars , and was able to get the stations, some pretty static filled though, but the more local ones came in ok, another thing to check is that the unit is plugged into a grounded receptacle ,

First of all check for any nearby source of interference.....Move your unit away from all computers, fluorescent lights, neon lights, microwaves, cell phones, and cell phone chargers. These devises tend to produce noise in the medium frequency band, where AM radio is broadcast.
If the unit plugs into the wall with a nonpolarized plug (where both prongs are the same size), try reversing the plug in the outlet. Moving the plug to another outlet might help, too.
check for fault in the antenna lead, (common) or bad earth on the antenna to body
If you don't have an antenna connected to your FM receiver,With a receiver or tuner, connect a wire-loop or T-shaped dipole FM antenna to the back of your unit. Move the antenna until you get the cleanest signal. Use a signal-strength meter or display to gauge signal strength if your unit has one.

Step 2 If you're still not getting a good signal, try an indoor amplified antenna, which you'll find at an electronics store. Don't buy one unless you get a guarantee that you can return it for full credit if it doesn't solve your reception problems.

Step 3 If your signal is weak because you live a long way from the transmitter, install an outside antenna and mount it as high as is practical. If you're primarily interested in getting signals from one station or from a group of stations in one direction, get a directional antenna and point it toward the transmitters.

Step 4 If you're using a portable FM radio where the only antenna is the power cord, stretch the cord as straight as possible and experiment with positioning again.

Step 5 Temporarily switch to monaural mode to improve a weak signal on an FM receiver.

Read more: How to Strengthen FM Radio Reception | eHow.com http://www.ehow.com/how_114024_strengthen-fm-radio.html#ixzz0u9nhGXAL


If you're still not getting a good signal, try an indoor amplified antenna, which you'll find at an electronics store.
If your signal is weak because you live a long way from the transmitter, install an outside antenna and mount it as high as is practical. If you're primarily interested in getting signals from one station or from a group of stations in one direction, get a directional antenna and point it toward the transmitters. Make sure to Switch from stereo to mono.

Step 4 With a receiver or tuner, connect a wire-loop or T-shaped dipole FM antenna to the back of your unit. Move the antenna until you get the cleanest signal. Use a signal-strength meter or display to gauge signal strength if your unit has one.

Step 5 Alternatively, upgrade to a third-party passive or powered antenna.

Step 6 Install a rotatable roof antenna for the best possible reception. Connect your unit to an existing television roof antenna for the next-best alternative.

Read more: How to Improve FM Reception | eHow.com http://www.ehow.com/how_5554_improve-fm-reception.html#ixzz0u9oTaz4Y

If you're using a portable FM radio where the only antenna is the power cord, stretch the cord as straight as possible and experiment with positioning again.

You have to connect an external antenna to the FM ANT. terminals on the back of the receiver.