20 Most Recent Onkyo DV-CP704 DVD Player Questions & Answers


Get new DVD player... They Are basically disposable nowadays hd I jacks go all the time . And it's more time and aggravation trying to fix it than it is to buy new

Onkyo DV-CP704... | Answered on Feb 01, 2014


I had a similar problem with Onkyo DV-CP706--it would play CD's but wouldn't play or recognize DVD's. Looking at other people with Onkyo problems, it looks like this is the most common part to fail on their DVD players. I had mine fixed by an authorized Onkyo repair center, ABL Electronics, located in Michigan. They said a part called "DVD Mechanism" was bad. They replaced that part, cleaned the machine and ran diagnostic checks for other problems, then sent it back to me. It now works perfectly and makes less noise than it did when it was new. If your Onkyo unit is still under the limited warranty, they will fix it for you for free. Mine wasn't, so it ended up costing just a little less than buying a new machine, but I feel like it was worth it. You never know what you'll get with a new machine, especially if you buy online.

Onkyo DV-CP704... | Answered on Apr 20, 2013


I recently had a similar problem with my Onkyo DV-CP706...the "DVD mechanism" part was bad. I sent the unit to the ABL Electronics in Michigan and they fixed it. They are an authorized Onkyo repair center. If you're still under warranty they'll fix it for free. My unit was not, but I opted to fix it rather than purchase a new one. They will clean your unit, inspect it for other potential problems, and it will come back to you better than it was when it was new from the store.

Onkyo DV-CP704... | Answered on Apr 20, 2013


Check the video-out cable. If loose, it can be "intermittent," thus cause image flicker.

Onkyo DV-CP704... | Answered on Nov 10, 2012


Hi
Get an unlock device DMR-EX768 (never mind the EB) from www.genuinecopies and follow the instructions. On the handset the red square in the bottom row is the STOP/EJECT
Mark

Onkyo DV-CP704... | Answered on Feb 10, 2012


clean the laser using a lazer disc cleaner not only does the disck get dirty but the lazer too when its too dirty it wont read the disc -- disc error
heres a piture of one you get them from electronics shops

sonicboomele_8.jpg

Onkyo DV-CP704... | Answered on Jan 18, 2011


I was recently given a DV-CP704 with similar problems. I fixed my problem, well sort of - read on. I did not have a schematic so I decided to start by checking power supply voltages. I noticed a fluctuating voltage on the K0 pin. This is located on a connector on a circuit board under the disk drawer, and the connector services a cable harness coming from the front panel controls. NOTE: before removing or installing connections, I unplugged the player power cord first then plugged it back in. Not knowing where the voltage was originating from I decided to unplug the front panel connector. The voltage on the K0 pin of this circuit board stabalized at +5 volt and was not fluctuating. I traced out where this pin went to the front panel and among other places it went to the power on/off switch and the drawer open/close switch. I restored the front panel connection and while monitoring the voltage on K0 I noted that when I press either the power on/off button or the drawer open/close button this voltage would go low, not to zero but to some lower voltage but when I released the button the voltage would once again fluctuate. While watching the voltage, if I pressed the power on button when the voltage was near +5 volts, the unit would turn on and off. To me it seemed that this voltage should be stable at +5 volts with no button press and should go low only when there was a button press. Next I decided to unplug the harness that went to the drawer open/close circuit board. The voltage on K0 was still fluctuating so I restored this connection. Then I unplugged the harness that went to the power on/off circuit board. AHHHHH, the voltage on K0 was now steady. I removed this small power switch circuit board. Not much to it, some switches, capacitors, LED etc. I did not see any obvious issues with the circuit board. I decided that either the power switch or the small capacitor across the power switch contacts were breaking down causing the K0 voltage to fluctuate. I decide that the power switch was the easiest to remove so I unsoldered and removed it, plugged the board back in. Now I can power on and off by jumpering where the switch was. The K0 voltage is steady and all other buttons work properly. I assumed that the problem was the power switch. I checked the switch with a high impedance Fluke ohmmeter but to my supprise I did not see any problem with the switch. I decided to reinstall the power switch to recreate the problem however now everything is working normally. I can only assume that the heat I applied to the switch during unsoldering somehow fixed the switch by melting or burning away the problem. In my case it was the power switch however all of the tactile switches appear to be the same type so if there is an inherent problem with these switches, soldering or cleaning I would assume it could have been any one of them. If you want to give this a try, remove the cover, remove the 3 screws that secure the front bezel on the bottom of the player. There are two small clips that need to be lifted to release the front bezel so it can be removed from the player and flipped down to gain access to the back while it is still attached electrically. Attach your voltmeter negative lead to the main chassis (ground) and with the positive lead measure the voltage on the power switch pins. One pin is ground so it should read zero or close to it. The other is the K0 signal and it should be at +5 volts until the button is pressed. I don't know about any of the other buttons but they may also operate in a similar fashion. I hope this may help some of you.
Tom Ulrich

Onkyo DV-CP704... | Answered on May 15, 2010


Hi
Switching it off pull the plug out and leave for 1 hour if not work then open the top lid take off it will have 4 screws on the sides of the dvd lid and genteelly push it out by hand, it some times the plastic on it is catching.
Worth a Try
All best: Pineworks

Onkyo DV-CP704... | Answered on Jan 28, 2010


After getting clarification from Fixya I can pass the links below to you to check yourself

Some players are harder than others to do this but you may want to
try here or here
Comments:
Toshiba's and JVC's are the harder ones to do

I use a Phillips myself as it is not only cheaper but has much more going for it than many of the higher end units. i throw anything at it and it just plays

The older the unit that harder it is to do the region free thing with.
I let my EX have the panasonic (big grin)

If you cant find a fix then look at the codes available for cheaper brands and how easy it is to do it before you purchase one.

Just a thought.

Onkyo DV-CP704... | Answered on Sep 22, 2009


HI...
A problem like that will need tech service.
Check the onkyo consumer site for service people

Onkyo DV-CP704... | Answered on Mar 03, 2009


Hi...
If this unit has a backlit display, it will need a new lamp.
I've fixed Yamaha's and NAD units in the same fashion.

Onkyo DV-CP704... | Answered on Mar 03, 2009


1. Press Open/Close on remote control. DVD tray opens. 2. Press the following buttons in sequence: 2, 8, 1, 2. 3. TV displays "Region 2" 4. Press the Enter button on the remote until code changes to 9 5. Press the Open/Close on the remote. DVD tray closes. 6. Press Power on the remote control. Now code free...

Onkyo DV-CP704... | Answered on Dec 12, 2008


I think it's possible to unlock the player to region free. I'll need more info on the DVD player. give me a few days to search for the tech details of the player
Rifaa

Onkyo DV-CP704... | Answered on Nov 17, 2008


Multi-Region Hack:

Press the Open button on your Onkyo DVD-player to Open the drive tray.
Using the remote press 9, 9, 9 and 9 on your remote control.
Press the 1 button on your remote control for region 1, 2 for region 2, and so on, or 9 for multi-region.
Press OK and the tray will close.
Reset the unit by powering Off and then back On again.

Onkyo DV-CP704... | Answered on Aug 12, 2008

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