Marantz SR-18EX Loses Memory and Has Distortion on Center Ch.

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http://www.retrevo.com/support/Marantz-SR-18EX-Receivers-manual/id/511ci766/t/2/

Headphones connected?

Disregarding specific sources, how does it do with test tones?

You need to check the connection of the lead that carries the audio from the DSS to the amp, move it to one of the other channels ie vcr and see if it can be heard when set to and switched to vcr. Then we know if we are dealing with the Amp or the source..

you want the audio signal to go to eq input then out of eq into rec input of your choice

It takes two, maybe more to tango - plus the cables that carry the various signals.

Can you define the signal loss better? Where do you detect it?

Audio, video, both?
Optical, HDMI, component ????

Try a different input or output port on the Marantz to isolate the source(s) as contributors.

hello do you mean is total dead if so check the glass fuses inside, but beware if you put another 1 in and it blows again then theres a dead short someware also make sure you use the same rated fuses the value will be on the end of the fuse or on the fuse holder on the power board. fingers crossed.

regards
shaun

the best thing to do is a code search per the directv manual and hope the Marantz powers off when you find the code.

If it turns off, you have won half the battle. Save the code and try turning the Mar back on.
The issue is that these universal satellite remotes are very limited on there funtionality with audio systems.

Keep in mind that if you find a code that turns it on & off, you will probably be limited volume only. If you get those three functions, you are very happy and call it done.

Hope this helps.

This goes for all sounds systems and not only Marantz.

The f-l channel of the sr18, & sr18ex & sr19 is a common failure location due to the heating and cooling over the years. The crackling an/or distortion, is most commonly due to the amplifier going into a high idle, or d.c. offset that can no longer be controlled by the adjustment potentiometers on the board. usually the two 2sc3200 transistors become unstable, and as well a 47mfd and a 470 mfd elect. caps nearby. Also distortion is caused by one or more of the zener and germanium diodes all grouped near the big dual ceramic white resistor. The amp block is held in by six screws. first remove the cross bracket, then cut the cable tie free from the hole on the board. Ten screws hold the top board on, the pull the boards apart from the connectors. before replacing it, resolder ALL of the connector pins to BOTH boards.

You have to assign the digital inputs on the setup menu from the remote control while you have the On screen display on a monitor or TV screen.

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

The stock remote for the SR-18EX is the RC-18SR - that's the one it shipped with when new. You can also use the RC-2000, RC2000 MkII, and I have an aftermarket RC-1400 that works perfectly with my SR-18EX, AND offers 15 macros instead of the standard 4 you get with the stock remote.