I Have Panasonic DVD recorder DMR-EH58 for two years. The last days it repeats 'self check'. During the startup the dvd door opens and closes, and also repeagtedly showing on the screen that It has completed the 'self check'. The dialogue window instructs to wait till the machine turn in to stan0by mode and restrat. Even though I follow instruciton it keep on doing the same thing.

SOURCE: Stuck in self check mode

Manually pull down the front shield, then somewhat forcefully pull down the inner shield and maybe two little white pins so the tray is exposed with nothing blocking it. Have someone plug the machine in while you are holding everything out of the way and the tray should start to open. Pull your fingers out quickly so you don't block the tray from sliding out.

SOURCE: DVD recorder DMR-E55

You can try a factory reset (reboot).Here are the steps..

The following will set your recorder to the Factory defaults.
(Will not format HD on DMRE80).

With power off (stand-by mode/CLOCK DISPLAY SHOWING):

1)Press and hold [skip reverse] [Time Slip] [Eject] buttons for about 10 sec
2)Display will show 'L1 TEST'
3)Now power off DURING TEST
4)Clock should be fashing 12:00
5)Turn power on and language menu will be displayed on TV

Use for
DMRE50
DMRE55
DMRE85
For the DMRE75V press both [dub] buttons and [eject].

Hope this helps.

SOURCE: Panasonic DMR-EH58- is recording only in B&W

The camera system was bought in USA. Changed output (in system settings) in DVD player to NTSC. Works fine now.

SOURCE: Panasonic DMR-ES45V - DVD recorder / VCR combo Remote not workin

My remote is not working. When I press a button, I get the following message on my unit: U12, U30, SET #, CHK REMOTE #, or RC #. What can I do to fix this? The message displayed means that the remote control and unit are not communicating and the remote needs to be programmed. To program the remote, press and hold the same number that is displaying on the unit and the [ENTER] or [OK] button for more than 2 seconds. For example, if the unit displays “SET 2”, press and hold [2] and [ENTER] or [OK] for more than 2 seconds.

SOURCE: how to unlock panasonic dmr-eh58 dvd player ?

Not sure exactly what you mean by "unlock". I suggest you try some of the "commands" listed onhttp://www.dxcc.com/dmr-e85h.htm Perhaps one of these commands will solve your problem.

Good luck.