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Tascam DR-40 Teardown

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  1. Tascam DR-40 Teardown, Preperation: passo 1, immagine 1 di 2 Tascam DR-40 Teardown, Preperation: passo 1, immagine 2 di 2
    • Ensure you have a clean, static-free working environment. Some parts in the Tascam DR-40 are sensitive and could be easily damaged.

    • If you don't have a static-discharge strap, periodically touch a metallic object to discharge any static electricity, preferably an object that is grounded. A metal PC case will most likely do.

  2. Tascam DR-40 Teardown, Remove SD Card and Batteries: passo 2, immagine 1 di 3 Tascam DR-40 Teardown, Remove SD Card and Batteries: passo 2, immagine 2 di 3 Tascam DR-40 Teardown, Remove SD Card and Batteries: passo 2, immagine 3 di 3
    • Open the rubber flap on the right side of the device and push the SD Card in until it clicks and pops out, allowing you to remove it.

    • The SD Card will prevent the rear housing from lifting up if left in the device.

    • Open the back cover and remove the batteries from the device.

    • Use the strap to remove the last battery in the middle.

  3. Tascam DR-40 Teardown, Identifying the Screws: passo 3, immagine 1 di 2 Tascam DR-40 Teardown, Identifying the Screws: passo 3, immagine 2 di 2
    • There are a total of 10 Phillips Screws that hold both halves of the housing together.

    • The two screws close to the rear speaker and the one inside the battery housing are different sizes/lengths to the rest of the housing screws.

  4. Tascam DR-40 Teardown, Removing the Screws: passo 4, immagine 1 di 3 Tascam DR-40 Teardown, Removing the Screws: passo 4, immagine 2 di 3 Tascam DR-40 Teardown, Removing the Screws: passo 4, immagine 3 di 3
    • Use a Phillips #1 Screwdriver to remove the screws from the housing. Keep in mind that there are 3 screws that are different lengths as mentioned in the last step.

    • Removing the front two screws is not necessary to remove the rear housing. The front two screws only hold the microphone assembly to the front housing.

    • The silver screw in the battery housing is longer than the other silver screws. Be sure to organize it accordingly.

  5. Tascam DR-40 Teardown, Organization is Key: passo 5, immagine 1 di 2 Tascam DR-40 Teardown, Organization is Key: passo 5, immagine 2 di 2
    • You should be left with 8 screws. Take note of the two bottom screws that came from the screw holes near the speaker.

    • Now take note of the silver screw above the bottom left black screw that came from the battery housing.

    • This screw is longer than the other 5 silver screws so make sure to organize your screws accordingly.

    • Before proceeding, make sure the rubber dust cover for the SD Card is open (as shown) so it doesn't get in the way of opening the rear housing.

    • Gently pull up on the rear housing to seperate it.

    • Two battery contacts will separate from the case as you pull up on the housing as shown in the video.

    • Do not use force to remove the housing. You could easily rip the two soldered battery contacts from the main board under it, causing damage to it.

  6. Tascam DR-40 Teardown, Opening the Rear Housing: passo 7, immagine 1 di 2 Tascam DR-40 Teardown, Opening the Rear Housing: passo 7, immagine 2 di 2
    • Use a flathead screwdriver to gently pry the negative battery contact away from the casing if it gets suck on the plastic nub.

    • Once the casing is free gently lift it up until the two battery contacts are free from the rear housing.

    • Be careful when removing the rear housing as there are two soldered wires connecting the the speaker to the sound board. (See pictures)

    • Open the rear cover like a book as shown in the video.

    • Be careful with the two wires that connect the rear speaker to the sound board. They are small and can be easily damaged.

  7. Tascam DR-40 Teardown, Speaker Removal: passo 9, immagine 1 di 2 Tascam DR-40 Teardown, Speaker Removal: passo 9, immagine 2 di 2
    • Use a flathead screwdriver to gently pry up on the rear speaker. The speaker is glued into place with double-sided tape so take your time.

    • Once the speaker is removed the rear housing can be set aside.

    • Be careful not to damage the speaker or the wires when removing it.

  8. Tascam DR-40 Teardown, Identifying the Screws (Again): passo 10, immagine 1 di 3 Tascam DR-40 Teardown, Identifying the Screws (Again): passo 10, immagine 2 di 3 Tascam DR-40 Teardown, Identifying the Screws (Again): passo 10, immagine 3 di 3
    • There are 7 Screws holding down the three different circuit boards. On the top you have the three screws holding down the sound board to the logic board with the screw on the left holding a grounding cable that's soldered to the main board.

    • On the Logic board there is a single screw that's holding it to the front housing.

    • Finally at the bottom you have 4 screws holding down the XLR Jacks and the main board to the front housing.

    • All these screws are the same length and thread.

  9. Tascam DR-40 Teardown, Removing the Logic and Sound Boards: passo 11, immagine 1 di 3 Tascam DR-40 Teardown, Removing the Logic and Sound Boards: passo 11, immagine 2 di 3 Tascam DR-40 Teardown, Removing the Logic and Sound Boards: passo 11, immagine 3 di 3
    • Remove the screw holding down the logic board to the front housing followed by the screw connecting the grounding cable to the sound board.

    • Once the screws are removed the only thing keeping the two boards in place is the white connector at the bottom of the logic board.

    • Gently pry up on the logic board to disconnect it from the main board.

    • Once the two boards are free, fold it over the microphone assembly to gain access to two additional screws.

    • Be careful with the 6 soldered wires connecting the microphones to the soundboard.

  10. Tascam DR-40 Teardown, Removing the Microphone Assembly: passo 12, immagine 1 di 3 Tascam DR-40 Teardown, Removing the Microphone Assembly: passo 12, immagine 2 di 3 Tascam DR-40 Teardown, Removing the Microphone Assembly: passo 12, immagine 3 di 3
    • Use a Phillips #0 Screwdriver to remove the two screws holding the microphone assembly to the front housing.

    • Once the two screws are removed, gently lift up on the assembly. It should come out as one piece with the logic and sound boards attached.

    • If you haven't already, remove the front two screws first as those two screws also hold the microphone assembly in to the front housing.

  11. Tascam DR-40 Teardown, Removing the XLR Jack Assembly: passo 13, immagine 1 di 3 Tascam DR-40 Teardown, Removing the XLR Jack Assembly: passo 13, immagine 2 di 3 Tascam DR-40 Teardown, Removing the XLR Jack Assembly: passo 13, immagine 3 di 3
    • Remove the 2 screws holding down the XLR Assembly to the front housing. (Here I also removed the two screws holding down the main board. You don't have to do this.)

    • Use a flat head screwdriver to unclip the front housing from the XLR Jack assembly. Not much force is needed here.

    • Gently lift up on the assembly until the the pins come out from the connector on the main board. Once removed the assembly can be set aside.

  12. Tascam DR-40 Teardown, Removing the Main Board (Prep): passo 14, immagine 1 di 3 Tascam DR-40 Teardown, Removing the Main Board (Prep): passo 14, immagine 2 di 3 Tascam DR-40 Teardown, Removing the Main Board (Prep): passo 14, immagine 3 di 3
    • In order to remove the main board from the housing you must remove the EXT IN slider as it in the way and holding the board down.

    • Gently press on the tabs with a flathead screwdriver to pop the slider out of the housing.

    • The tabs on the plastic slider are fragile and can easily break. Take extra precaution when removing the slider.

  13. Tascam DR-40 Teardown, Removing the Main Board: passo 15, immagine 1 di 2 Tascam DR-40 Teardown, Removing the Main Board: passo 15, immagine 2 di 2
    • Once the slider is removed, gently lift up from the top of the board and pull out to disconnect the Remote Jack from the bottom of the casing.

    • The board should easily come out and can be set aside once removed.

  14. Tascam DR-40 Teardown, Removing the Buttons: passo 16, immagine 1 di 2 Tascam DR-40 Teardown, Removing the Buttons: passo 16, immagine 2 di 2
    • The buttons can be removed as one piece just but pushing them out from the front of the casing.

    • The MODE, QUICK, PB CONT, and MIXER buttons are held in place by plastic pegs and can be removed simply by just prying up on it with a flathead screwdriver.

  15. Tascam DR-40 Teardown, Sepreating the Logic and Sound Boards: passo 17, immagine 1 di 3 Tascam DR-40 Teardown, Sepreating the Logic and Sound Boards: passo 17, immagine 2 di 3 Tascam DR-40 Teardown, Sepreating the Logic and Sound Boards: passo 17, immagine 3 di 3
    • Separating the two boards is easy. First remove the two remaining screws holding it together.

    • Next, gently lift up at the board until the black connector is disconnected. Once disconnected the Logic Board will come loose from the Sound Board.

    • The metal shielding on the logic board is not held down by anything and can be simply lifted off the logic board.

    • Be careful with the wires connecting the microphone assembly to the sound board as these can easily break.

  16. Tascam DR-40 Teardown, Disassembling the Microphone Assembly: passo 18, immagine 1 di 3 Tascam DR-40 Teardown, Disassembling the Microphone Assembly: passo 18, immagine 2 di 3 Tascam DR-40 Teardown, Disassembling the Microphone Assembly: passo 18, immagine 3 di 3
    • Disassembling the microphone assembly is easy. Unscrew and remove the 4 brackets holding down the microphone guards.

    • Remove the guards by lifting up on them and sliding them out on both sides. This will reveal two screws holding the two plastic housings together.

    • Remove the two screws and gently separate the two halves of the housing.

    • The wires may be attached to the housing with foam tape. Simple lift up on the tape to peel it off the housing.

    • No further disassembly can be done past this point without desoldering the 6 wires connecting the two microphones to the sound board as the wires are routed through holes in the plastic casing.

    • Be careful with the 6 wires connecting the microphones to the soundboard as they are fragile.

  17. Tascam DR-40 Teardown, Done: passo 19, immagine 1 di 1
    • Congrats, you successfully disassembled your Tascam DR-40 Field Recorder.

    • Overall the parts are pretty accessible and swapping parts out seem easy enough.

    • However, more complicated repairs like repairing the screen or replacing the speaker/microphones will require more advanced tools such as a good soldering iron that can easily reach the small pads on the circuit boards.

    • To reassemble the Tascam DR-40, follow this teardown in reverse then jump to Step 20.

    • Be sure to wipe off any fingerprints you may have left behind on the LCD Display or the inside of the plastic display protector before reassembly.

  18. Tascam DR-40 Teardown, After Reassembly: passo 20, immagine 1 di 3 Tascam DR-40 Teardown, After Reassembly: passo 20, immagine 2 di 3 Tascam DR-40 Teardown, After Reassembly: passo 20, immagine 3 di 3
    • After reassembling the Tascam DR-40, make sure to reinstall your batteries and SD Card. Then test the device and all it's functions to make sure it's fully operational.

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Tecwizard

Membro da: 09/24/17

2.138 Reputazione

2 Guide realizzate

6 Commenti

This is a great teardown, thank you! I am having an issue with the unit powering down when I set it to External Mic. Do you know which card, or what issue could create this problem?

zaqar - Replica

Mine will not power on at all even with USB power. IS there any sort of fuse or something?

Annie Uzer - Replica

Sadly I'm no electronics expert or an expert with this device. I created the teardown because I was gonna clean the inside of the plastic screen cover which required full disassembly of the device. I'm sure someone here or on Reddit can be of better help. I would check the contacts for the battery compartment and double check that the Hold switch on the side is OFF. I don't think the device accepts USB Power but I'm not home to test out the theory for myself.

Tecwizard -

Completed the disassembly trying to identify the reason why mine turns off immediately after I power it on. I will re-assembly and clean some components to see if this fixes it, not an electronics expert so really appreciated the guide. If someone has any other ideas as to what is causing this issue I'll appreciate the help.

Bob - Replica

I'm not an expert on electronics or this device. Assuming the issue isn't bad batteries then is sounds like a component on one of the boards has failed. I recommend seeking the aid of a professional who has the tools and skills to probe each board and identify the failed component. It could be anything from a bad resistor to a failed chip. You could also try buying a similar device for parts and attempt swapping the various boards until the issue is resolved. You may loose your settings in the process depending on the board. Hope this helps.

Tecwizard -

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