48 manual marantz sr

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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Possible manual, for SR-96 (but doesn't specify SR-96U).

https://www.manualslib.com/manual/1010603/Marantz-Sr-96.html

Possible service manual, that include nameSR-96U)

http://www.vintageshifi.com/repertoire-pdf/pdf/telecharge.php?pdf=Marantz-SR-96-Service-Manual.pdf

I think your radio is as much computer as radio. Computers are everywhere and contain delicate CMOS circuitry - easily damaged by a power surge such as often accompanies a power outage.

Surge protectors should be used to provide a measure of protection, although it is possible a software fault has been caused by the sudden interruption of supply.

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

Answer lies on page 48 of your

Marantz SR 5001 Manual


If problem is not resolved, it may needs servicing.

Changing the type of fuses in your receiver will not change your sound quality at all.

Try plugging in headphones, if they work, it sounds like outputs have blown,

I have the Marantz SR5200, unable to get the Set-up / t.tone button to work, don't have the instructions,

If you mean the model number, that is: RC-18SR