I have an (obviously) ancient but still reliable rx-v990 with the ddp 1. I would like to use it as part of a consolidated set-up with a samsung 550. any recommendations on making this work?

turn the volume down first and look for a mute, or midnight or source button. you may have to toggle through this button a couple of times. MAKE SURE THE VOLUME is DOWN first, then push it and recheck volume. if no luck, check your wires and make sure both ends are hooked up properly

What we don't yet know is if it's the remote or the receiver. Do you have another remote in the house that could send compatible commands to the receiver to prove if it understands and executes volume up/down commands?

24 gauge

found it from this link
First start with *#0002*28346#
1. You will see menu showing "Under construction".
Press #.
2. New screen apears.:
[1] Load Params
[2] Call Config
3. Press Call Config
4. New screen (in here are all the settings for call volume):
[1] RCV Rx Call Vol (that`s what we focus on)
[2] RCV Rx Drmf Vol[]
[3] RCV Codec Gain[]
[4] RCV NS-EC[]
[5] RCV Tx AGC[]
[6] RCV Rx AGC[]
[7] RCV Tx Filter[]
[8] RCV Rx Filter[]
5. Press 1 to get into RCV Rx Call Vol Settings.
6. Now starts the editting.
You should see something like this (values below are not default cause i already changed them):
0.[2] rx:0.0dB
1.[4] rx:10.0dB
2.[6] rx:25.0dB
3.[8] rx:50.0dB
4.[10] rx:100.0dB
5.[12] rx:200.0dB
6.[14] rx:255.0dB
Input Ex: 123-> 12.3dB

Last line explains almost everything.
Each line represents different volume levels. Let`s say you want to edit first line. Then you press 0. Screen on your phone should blink. Now you enter value for the level. Let`s say you want it to be 21.3dB. Type in 213 and press ok. Display should blink and you will see:
0.[2] rx:21.3dB
1.[4] rx:10.0dB
2.[6] rx:25.0dB
3.[8] rx:50.0dB
4.[10] rx:100.0dB
5.[12] rx:200.0dB
6.[14] rx:255.0dB
Input Ex: 123-> 12.3dB
That`s it. You just changed first line which means the lowest volume setting to 21.3dB. Keep playing with other settings. When you want to change second line just press 1. Then screen blinks again. Let`s say you want it to be 255dB. Type in 2550 and press OK. Screen blinks and you should see:
0.[2] rx:21.3dB
1.[4] rx:255.0dB
2.[6] rx:25.0dB
3.[8] rx:50.0dB
4.[10] rx:100.0dB
5.[12] rx:200.0dB
6.[14] rx:255.0dB
Input Ex: 123-> 12.3dB
7. Now let`s go to speakerphone.
Press # 4 times.
You should get to menu like this:
[1] Debug Screen
[2] Version/DMS Information
[3] RF Test
[4] UMTS rf nv
[5] Read gsm rf nv
[6] Write gsm rv nv
[7] Base Band
[8] Audio (that`s where we are going now)
[9] Common
8. Press 8.
You should see:

posted by Gjigji Shabani - Ulqin - MOntenegro

there should be 2 buttons on the side of the phone push the top one or menu>settings>profiles>pick on that you want to use then hit the left soft key and scroll down to volume

done

I was suprised to see quite a few people are tweaking their sound settings and various other things -
thanks very much for the insightful help offered for my queries.

It might be an abuse of space, but If anyone else happens to needs/wants the defaults values SHG D500 Samsung Test Mode they are:.

Code: *#8999*8378# ( * means press star)

Normal
MIC gain - 0
Tx PGA - 70
Side PGA - 0
Ear gain - 3
HFR gain - 9
Rx PGA - 128
Rx vol - Lv 1 - 10
Rx vol - Lv 2 - 28
Rx vol - Lv 3 - 40
Rx vol - Lv 4 - 50
Rx vol - Lv 5 - 96
Rx comp - Lv 1 - 11
Rx comp - Lv 2 - 11
Rx comp - Lv3 - 11
Rx comp - Lv 4 - 29
Rx comp - Lv 5 - 30
Key vol - Lv1 - 64
Key vol - Lv2 - 64
Key vol - Lv3 - 64
Key vol - Lv4 - 64
Key vol - Lv5 - 64

Headset
MIC gain - 0
Tx PGA - 64
Side PGA - 0
Ear gain - 13
HFR gain - 3
Rx PGA - 128
Rx vol - Lv 1 - 10
Rx vol - Lv 2 - 20
Rx vol - Lv 3 - 42
Rx vol - Lv 4 - 76
Rx vol - Lv 5 - 146
Rx comp - Lv 1 - 11
Rx comp - Lv 2 - 11
Rx comp - Lv 3 - 11
Rx comp - Lv 4 - 30
Rx comp - Lv 5 - 28
Key vol - Lv1 - 10
Key vol - Lv2 - 20
Key vol - Lv3 - 42
Key vol - Lv4 - 76
Key vol - Lv5 146

Loud SPK SUP
MIC gain - 0
Tx PGA - 160
Side PGA - 0
Ear gain - 12
HFR gain - 5
Rx PGA - 120
Rx vol - Lv 1 - 16
Rx vol - Lv 2 - 27
Rx vol - Lv 3 - 45
Rx vol - Lv 4 - 76
Rx vol - Lv 5 - 128
Key vol - Lv1 - 1
Key vol - Lv2 - 2
Key vol - Lv3 - 3
Key vol - Lv4 - 4
Key vol - Lv5 - 4

Loud SPK SDN
MIC gain - 0
Tx PGA - 160
Side PGA - 0
Ear gain - 12
HFR gain - 5
Rx PGA - 120
Rx vol - Lv 1 - 16
Rx vol - Lv 2 - 27
Rx vol - Lv 3 - 45
Rx vol - Lv 4 - 76
Rx vol - Lv 5 - 128
Key vol - Lv1 - 1
Key vol - Lv2 - 2
Key vol - Lv3 - 3
Key vol - Lv4 - 4
Key vol - Lv5 - 4

Loud SPK EXT
MIC gain - 1
Tx PGA - 226
Side PGA - 0
Ear gain - 12
HFR gain - 5
Rx PGA - 92
Rx vol - Lv 1 - 16
Rx vol - Lv 2 - 27
Rx vol - Lv 3 - 45
Rx vol - Lv 4 - 76
Rx vol - Lv 5 - 128
Key vol - Lv1 - 5
Key vol - Lv2 - 2
Key vol - Lv3 - 3
Key vol - Lv4 - 4
Key vol - Lv5 - 4

Loud SPK Out Only
Tx PGA - 160
Side PGA - 0
Ear gain - 12
HFR gain - 5
Rx PGA - 120
Rx vol - Lv 1 - 10
Rx vol - Lv 2 - 28
Rx vol - Lv 3 - 40
Rx vol - Lv 4 - 50
Rx vol - Lv 5 - 96
Key vol - Lv1 - 1
Key vol - Lv2 - 2
Key vol - Lv3 - 3
Key vol - Lv4 - 4
Key vol - Lv5 - 4

Yamaha AMP vol.
31

Yamaha MEL vol.
Normal
Lv 1 - 6
Lv 2 - 12
Lv 3 - 18
Lv 4 - 24
Lv 5 - 31
Melody key
Lv 1 - 2
Lv 2 - 4
Lv 3 - 11
Lv 4 - 18
Lv 5 - 25
Power on/off
Lv 1 - 1
Lv 2 - 10
Lv 3 - 14
Lv 4 - 18
Lv 5 - 22

ISS Normal
Ear gain - 12
HFR gain - 3
Rx vol - Lv 1 - 121
Rx vol - Lv 2 - 186
Rx vol - Lv 3 - 268
Rx vol - Lv 4 - 376
Rx vol - Lv 5 - 564
Rx vol - Lv 6 - 802
Rx vol - Lv 7 - 980
Rx vol - Lv 8 - 1560
Rx vol - Lv 9 - 2167
Rx vol - Lv 10 - 2863

ISS Headset
Ear gain - 10
HFR gain - 3
Rx vol - Lv 1 - 164
Rx vol - Lv 2 - 328
Rx vol - Lv 3 - 492
Rx vol - Lv 4 - 656
Rx vol - Lv 5 - 820
Rx vol - Lv 6 - 984
Rx vol - Lv 7 - 1148
Rx vol - Lv 8 - 1312
Rx vol - Lv 9 - 1476
Rx vol - Lv 10 - 1640

Bluetooth
Tx PGA - 255
Rx PGA - 12
Side PGA - 0

The code is: *#0206*8378#
Then go in: H/W Test > Audio Settings > MP3 spk

change 'ear gain' to 14.

Then, enter 'Rx vol.'....
I made this changes:
Level 1: 150
Level 2: 180
Level 3: 210
Level 4: 260
Level 5: 300
Level 6: 370
Level 7: 460
Level 8: 550
Level 9: 640
Level 10: 700
Level 11: 800
Level 12: 1000
Level 13: 1350
Level 14: 1400

I made this changes and the sound of mine became very loud now...
You can do your own changes, but don't abuse.

well connect coax digital out to coax digital out or optical to optical.

Try the Technics SH-AC500D Digital Surround Processor. Its outputs should match the inputs on the RX-V2090. I own both units, though I am using a DDP-1 with the Yamaha receiver. I use two separate amps with the Technics to achieve surround sound using my good vintage stereo system (two of them actually - one for front and ane for rear). The Technics is a nice piece of kit.

The code is: *#0206*8378#
Then go in: H/W Test > Audio Settings > MP3 spk

change 'ear gain' to 14.

Then, enter 'Rx vol.'....
I made this changes:
Level 1: 150
Level 2: 180
Level 3: 210
Level 4: 260
Level 5: 300
Level 6: 370
Level 7: 460
Level 8: 550
Level 9: 640
Level 10: 700
Level 11: 800
Level 12: 1000
Level 13: 1350
Level 14: 1400

I made this changes and the sound of mine became very loud now...
You can do your own changes,