how to unmute or reset DVD player directly without remote control?

i forgot to hide the remote control of dvd player that already broken (plus volume and some button not work) when my friend and his son visit me last week. his son press minus volume until the sound is gone, so because of that, my dvd player can't sound. i try find remote control on online shop with same to this but not find it. finally find general remote then i bought it. unfortunetely that remote doesn't work after i input every 3 digit (trial and error).
is there any way to reset the dvd player direct at the dvd player so the sound coming again?
 
I would say no, probably no way unless there is some way to reset the player without a remote.

Given that you say the remote partly works (was able to turn down volume) then it probably is fixable or at least possible to temporarily link the volume up button contacts and get it to work.

Have you opened the remote to see what might be wrong? 99% of remotes are fixable.
 
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Try and locate what points the volume plus pads operate on and use a bit of wire to link them temporarily. Although not impossible I would be very surprised if the remote had a deep-seated fault causing this.

Also worth checking the remote with a camera to see if the IR diode is transmitting or not when you press the faulty buttons. Could the problem actually be with the player and not the remote?
 
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