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    • Insert wisdom here.

    • ...

    • Let's open it up.

    • This is quite large.

    • I hope the glass top of the studio desk don't get in the way of viewing the pictures.

    • Anyhow.

    • To open up the radio, you need to .. well, twirl away some screws.

    • Two screws are under the handle, four are on the back.

    • And a additional bunch on the (oof!) wet bottom.

    • .. and a VERY deeply hidden Philips screw.

    • Break out your household mediumweight -- a long shaft Philips #1. You'll need it.

    • With the case screw removed, you flip to the back of the .. thing.

    • Then, holding the bottom half (the half under the two white piece), push the top half up and away.

    • And ... it opens up, like a briefcase.

    • Now with the device opened, we need to disconnect power.

    • Disconnect the four plugs on the "power board". Each of them is of a unique size, so you can't mix them up.

    • However, the two plugs (later three) on the "connector board" are practically identical, and are only different in the order of the wires connected.

    • Don't mix those up.

    • The next step to separate the two halves involving disconnecting tentacles and umbilical cords the grounding line.

    • Fun fact -- the device has the power supplied through a two-prong plug, meaning there is no "true" GrouND.

    • This mystery is deepened by the fact that only the "CD board" have this "ground" cable at one of the screw posts.

    • .. so the bottom half slides away.

    • Apparently the top half houses all the brain, since there are quite a few green PCBs and two large, dense boards.

    • We can make our lives easier by trying to remove the two white piece.

    • Apparently there is something holding them, since they refuse to move under slight tugs that aims to unseat them.

    • And those come from ... behind the handle?

    • So, how do you remove the handle?

    • Well, if you flip to the side, you can see the joint of the handle.

    • And immediately next to the joint, is a "flap".

    • And if you depress this flap, this creates a channel, through which the handle can be slide backwards (and out of the hinge)

    • And THAT will give us access to this screw, which is required to remove the "white piece"s.

    • Apparently all the "brain" is located on the top half. The boards are significantly more dense.

    • Next up we remove the "CD board".

    • Why the CD board?

    • I don't know. It will be a good question to think about while we pop the connectors and remove the screws.

    • Or wonder about what the ICs behind the heatsink/label actually do.

    • I bet the one behind the label is a storage unit, like ones in a flash drive.

    • Next up we remove this "board with a cord".

    • But before we can do that, we need to disconnect THIS from the "main board".

    • Turns out the white-ish "string" going from the coil to the board is actually made up of copper wires.

    • This is quite a rudimentary oscillator coil for the FM radio if you ask me.

    • There is a screw inside the "coupler" for the radio knob, and on that screw is some glue.

    • Ah, because the USB port and the SD card adapter is blocked by it.

    • So now we remove those two little things.

    • Then we would remove the ...

    • Huh?

    • Apparently the main board is trapped under the "tape board", so by the norm we will remove the "tape board" ...

    • Apparently we are doing it wrong here, and we should instead focus on removing the front section from the top section.

    • So we will remove this L-bracket...

    • and this L-bracket.

    • And this screw on the first L-bracket.

    • And then we will have to remove this switch, for the other wire on the connector is soldered to the board.

    • The main board is now available for removal.

    • But before the motherboard is free, we need to turn to the cable-with-a-ring and remove that first.

    • Look at it. Water stains, oil stains, mineral deposits ...

    • The backside is quite ok, though.

    • Then we go remove that tape drive.

    • Let's pause here and examine that tape drive.

    • The buttons (fast forward, fast backward, play) control the location of the white gear.

    • The white gear then move to engage with different gears, which drive the two spindle at different speeds.

    • So what is driving the white gear?

    • On the back, you will find the wheels and belts that drive it.

    • The white gear is attached to a armature that move into the different positions, while the elastic belt pick up any slack and accommodate for the length differences.

    • With the tape drive gone, we can now access the front control-display bar.

    • Rid the ribbon cable, disconnect the connector and remove the button board.

    • Then remove the display board.

Conclusão

To reassemble your device, follow these instructions in reverse order.

Xavier Jiang

Membro desde: 05/10/2016

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