Manually tuning the reciever

May be bad connections on the preamp ic's. Otherwise there is a short in the amp that needs to be repaired.

Have you got a FM Antena hook up to it for the FM ,Sations, If not that could be causeing it to hum.

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Sony-STR-DE985-Receivers-manual/id/387dj984/t/2/

Here are the list of Sony remote codes :
5017, 5023, 5028, 5029, 5030, 5031, 5032, 5033, 5095, 5096, 5097, 5113, 5117, 5121, 5125, 5129, 5133, 5134, 5136, 5146, 5162, 5163, 5169, 5170, 5171, 5172

Here is how to program the remote.

1. Turn on the Receiver.
   
2. Press and hold AUX and OK at the same time.
3. Release both the AUX key and the OK key at the same time. All the Mode keys should flash twice.
4. Enter the four digit setup code and the AUX key will flash three times indicating correct entry and return to normal operation.
5. Point the remote at the Receiver and press the power button. If it turns off the receiver it is now programmed. If not Repeat steps 2-5 until the remote turns off the unit.

Good Luck,
Robert

make sure the FM antenna is connected and in a good place then check to see if the A-B speaker selector is selected properly.check to see that the sound field is set properly, My 800 allows for several different options and if your speaker wires are reversed or not in the correct position front left at front left etc it will not send the signal to those speakers. try using the TEST TONE feature if you have one it will send a signal to each speaker in sequence (LF< C< RF<in order) it will go all the way around to see if they are connected properly, that way you can tell if they are connected at all or in the wrong spot on the back interface. I dont know if that is what you meant by AUTO CAL, but that is a seperate feature when you use the connected mic to determine range, height and distance to the position in the room you are most likely to be seated for optimal sound.

1 Press SOURCE/POWER until a radio frequencyappears in the display.
2 Press BAND/TEL. repeatedly until the desiredradio band is displayed.
FM1 FM2 AM FM1
3 Press TUNE/A.ME to select the tuning mode. (the play/pause
button above source/power)

Distance mode:Both strong and weak stations will be automatically
tuned in(Automatic Seek Tuning).
Local mode:Only strong stations will be automatically tuned in
(AutomaticSeek Tuning).
Manual mode:The frequency is manually tuned in steps
(Manual tuning).

select manual mode to tune it one by one.

need owner manual for a sony str-de985

You appear to have reprogrammed your remote. Remotes can work with other units made by the same company. But the keys will pass out different signals to each unit. You need to find the correct code for your unit.
This could involve selecting a combination of keys on the remote and possibly some controls on the unit. Then entering a numbers on the remote.
It could be that the unit has the option of selecting a remote mode 2 also. So you will need to select it back to one or whatever it is supposed to be.

Power Amp IC gone in your set, replace it.

codes for remote