Old DVD player teardown

Teardown process video

A funny story, my parent told me this is a desktop HDD from the 90s. They removed it before replacing the old-fashion desktop and kept it for almost 20 years, because they were afraid of personal information leakage. I thought it would be a lots complicated electronic components inside, but after disassembly, I found out that it is just a DVD player. 

Parts with materials & technology

Overview
Overview

1&2, full metal shell pressure casting
3&6, plastic frameinjection molding
4, CD holder – plastic – injection molding
5, plastic lipinjection molding
7&18, gear system – plastic – injection molding
8&9, metal framepressure casting
10, metal stickroll
11, PNB1-T278-BC axis of rotation – metal&plastic
12, laser head – metal&plastic
13, control panel (view more below)
14, clip (view more below)
15, data tapemetal&plastic
16, TB2520 linear motormetal
17, springs metal – chill block melt-spinning
18, screws –  metal – chill block melt-spinning

Clip & Control panel

1, MT1329E DVD server & decoding chip
2, MT1326Fradio-frequency power amplifier
3, DM168Dcache drive
4, switch
5, resistance
6, shift
7, capacitance
8, M.T.C ccm03-020r1-4spindle motor
9, volume control valve
10, headset jack
11, resistance

Tools

cross screwdriver & slotted point screwdriver & hexagonal screwdriver

Design elements

Tendons

I got a big trouble at the every beginning. Even if I removed all the screws, I still couldn’t tear the metal shell down. You can see in my video that I took it apart with brute force ultimately. Later, I noticed there are many small tendons on the side that prevent people from moving it. Screws are not just for fixing, but a double insurance. This design element interest me that the design of the object itself is more important, and it can be stronger without adding extra content.

Texture detail

Another thing I found was that the surface friction of the rotation axis drive the DVD to rotate at a high speed. I thought there would be something inside for fixing, did not expect for a solution of the object’s CMF. The designer may easily fix the DVD through the texture without adding additional parts to achieve the goal. As the same I discovered at the first design elements.

Thanks for watching ❤️