Marantz SR870 tuner not working

No, it is a Surround Sound Receiver for taking television signal, or a signal from another device and amplifying it to multiple speakers..

https://www.google.com/search?q=Marantz+SR+68

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You may have many different issues in the FM circuitry. Do any other FM stations come in?

If you are interested in having your Marantz repaired, please visit my website at audioserviceclinic.com. You may contact me there. Thank you.

It seams like the amplifer is not working and you are right but it certanly needs to be measured first.

Hello,

my first question is does the light come on when you turn to Tape, Phono, Aux selection? If no lamp is blown, if it does come on then your tuner need to be serviced. FM tuner work is NOT for a novice. I would be glad to take a look at the unit.

Thanks

www.back2lifeelectronics.com

Hello,
You can use some speaker wire. and pull it apart until each leg is 2 1/2' long and then connect it to the balanced antenna input. Or you can run that 2 1/2' (each leg) of wire to the the coax connecting one side to the shield and one side to the center core of a 75 Ohm coax and then run the coax to the FM input on your reciever. The (two) [2 1/2'] legs create a dipole and the coax prevents high SWR and improves recieve. Remember it will work best the higher you get it.
Regards,Tony

Your tuner section is bad and needs to be repaired by a qualified repair technician. Sorry to be the bearer of bad news, Windle.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/reginald_bec291de192ca44f

Turn the volume up to the highest level.

Can you hear a hiss or static?

NO...usually means speakers are disconnected..often loose socket at rear of radio or broken wiring


YES...Hiss means either blown speaker, faulty radio or faulty aerial.

If you have tape or CD as well , this will prove whether it is the aerial or not.

HISS with CD or tape playing means faulty radio or speakers

WORKING OK with CD or tape means faulty aerial

Is this what you need? http://cgi.ebay.com/4pc-Gold-Plated-Aerial-Female-Aerial-Female-Adapter-/180435080974?pt=LH_DefaultDomain_0&hash=item2a02c4d70e
although I would be surprised if the signal you have would be correct to supply your fm tuner, you may be better off with something like this (depends on how good your fm signal is locally) http://cgi.ebay.com/FM-AERIAL-KIT-RADIO-RECEIVERS-BALUN-UNIVERSAL-/310283558296?pt=LH_DefaultDomain_3&hash=item483e575d98#ht_2068wt_876
Alternatively, and I know this sounds crude, poke a long piece of wire into the centre of the aerial socket on your tuner and pin it to the wall or a door frame, it often works if you have a decent signal to begin with.

You probably need to install a proper fm aerial and diplexer, is your aerial a TV aerial or a radio aerial?
You need to set it for the correct TV system in the software to get the audio from the TV, there will be a number of options like PAL I or PAL M or N. etc They have different sound settings, you need to choose the correct one for your system.

Your unit's micro IC, is in need of a reset.Un-plug the unit and locate the semi large yellow capactor on the main board. (r-h side facing front) Now flip the unit over and look thru the vent holes in that same area and locate the two solder pins. Short them out with a thin metal object, like a straightened out paper clip or wire, and turn it over (just discharge the cap and remove your wire) this will default all settings and restore normal operation.