20 Most Recent Marantz PM7200 2-Channel Amplifier - Page 4 Questions & Answers

The plastic base may have become warped or the metal platter was not reinstalled correctly after belt replacement.

Contact Marantz to inquire.

First swap wires on the input and see if same side has a problem. If not then input wires or jacks causing it. If wires swap doesnt do anything then switch speakers with wires. If that doesnt work try to clean speaker connectors but there is a big chance that amplifier need to be repaired

Purchase another one.

My sr670 is stuck in Standby mode
What should i do

Try to use different discs. Older unit may have problem writing high speed discs. Try to find 1x or 2x discs. OPC-optical power calibration. Another possibility that yourlaser is on the way out

Check to make sure your speakers are in phase. This means that they are both wired the same way. Common problem, and can damage your amplifier if not changed. Positive and Negative must be the same on all speakers.

Unless you have extensive knowledge of electronics and the equipment necessary to troubleshoot the issue, I would look for a reputable repair center. The unit has components inside that eventually fail.

https://audiokarma.org/forums/index.php?threads/marantz-sr7000-increasing-bass-w-o-remote.504810/

Check the cooling fan

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

Switch off the unit. Then hold down Sorround, Exit, Memory & Clear buttons all together and then switch on the power. This should work.

Hello Meredith, for what you are saying, you could have a problem in the cable that you use to send the signal you want to record, or the microphone cable or the line cable put to record the Marantz, without any cable connected to the inputs and listen with the headphones, if the hum is, if not, try to change the cables for others of the same type, if you use microphone, controls the connectors, which do not have humidity or rust in the contacts I hope you can solve the problem Greetings Franco Dosil Hola Meredith, por lo que comentas, podrias tener un problema en el cable que utilizas para enviar la se?al que quieres grabar, o el cable de micr?fono o el cable de linea pon a grabar el Marantz, sin ning?n cable conectado en las entradas y escucha con los auriculares, si el zumbido esta, si no esta, prueba cambiar los cables por otros del mismo tipo, si usas micr?fono, controla los conectores, que no tengan humedad u oxido en los contactos Espero que puedas resolver el problema Saludos Franco Dosil https://www.hifiengine.com/hfe_downloads/index.php?marantz/marantz_pmd201_221_en.pdf