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Current time:0:00Total duration:3:50

What is inside a DVD player? (1 of 5)

Video transcript

all right today we're going to take a look at this DVD player we're going to see what's inside and what makes it work there are several key components to this we'll be looking at the power supply the control board and the CD tray as well as the laser itself and the external housing so let's go ahead and get started this DVD player is actually very low cost you can buy it for less than $30 and the way they've been able to reduce the cost as part of it is that the the actual chips inside it needed to make it run have come down in price and part of it is that they've been able to simplify the components on the board tremendously there we go alright take a look at the inside there this this piece of metal is again was just a flat sheet was run through a press which shot created these tabs here and the tabs lock in the the housing under the front part and then also it also had these indentations stamped in it so the screws would sit flush and then the holes were punched in it and it was folded ok so you can see inside the DVD player here I do have it plugged in never safe to plug in an electronic device when it is open so do not try this at home unless you have a professional with you but I did want to show you what happens when the seat the DVD or the CD gets pulled into the player and kind of how how it works so what's going to happen is the tray is going to come in and you'll see this backplate here lower down to make room for that tray and then you'll see it spool up and then the DVD then the laser will move across or the the laser assembly will start sliding across the DVD and you'll see that happen here so you can see the power is on the LED indicators here I'm going to go ahead and close the tray to bring it in and then press play and you can see it's spool up there and what's happening is power is being fed from this board here all the way over to the control board then the control board is telling the motors what to do and gathering information from the laser and then it's sending it to these ports here which go out to your TV and show up as a signal we're going to try and remove the front panel of this unit there we go all right so the front panel up basically it's an injection molded plastic piece it houses the the slot through which the CD tray comes out of it also houses a window that the infrared from the remote control can penetrate to tell the thing what to do and it has a another little spot for an LED that indicates whether the device is on and and or whether it's it's turned off and then on the top there are a number of different buttons those buttons are separate pieces molded in there and there's an eject button to play pause a stop and a power button so fairly simple design and the this piece is probably made out of ABS plastic I don't see an ABS mark on it it has these tabs which snap into the rest of the frame and make it easy to attach and fairly fairly low cost there