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Philips Wake-Up HF35xx Disassembly

Introdução

This bed side light is a bit tricky to open, but you can do it with patience and the right tools. Having a "jimmy" (small putty knife) will make this disassembly much easier.

These instructions have been reported to work for several very similar models: HF3520, HF3560, HF3531, HF3501, and HF3510.

The original purpose of this disassembly was to install an antenna jack (BNC) to attach a telescopic antenna or roof aerial, but it is also useful for repairing the circuit boards.

O que você precisa

  1. Philips Wake-Up HF35xx Disassembly, Start: passo 1, imagem 1 %32 Philips Wake-Up HF35xx Disassembly, Start: passo 1, imagem 2 %32 Philips Wake-Up HF35xx Disassembly, Start: passo 1, imagem 3 %32

    • There is a screw under the shiny UL sticker. Remove the sticker or pierce it to unscrew and remove this bottom panel.

    • There are two tabs holding the panel into the back of the clock/light. If the panel does not come out easily, gently wiggle a flat-blade screwdriver or spudger in the grill next to where the screw was to loosen it.

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    • Flipping the light on its back will present a small section of the bezel that can be pried out. It is a small plastic strip with hooks that have to be disengaged to be removed.

    • Push the blade of the jimmy directly into the crevice above the cover. Once it has gone a few millimeters, tilt it to lift the cover slightly.

    • Slide the jimmy to the right side and press it against the latch to release it. Do the same for the left side.

    • A "jimmy" is essentially a small putty knife with a strong, slightly flexible blade.

    • Note: Despite the images shown, a spudger is not recommended as the fit is so tight it takes quite a bit of effort to insert and slide.

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  3. Philips Wake-Up HF35xx Disassembly, Remove the button ring: passo 3, imagem 1 %32 Philips Wake-Up HF35xx Disassembly, Remove the button ring: passo 3, imagem 2 %32 Philips Wake-Up HF35xx Disassembly, Remove the button ring: passo 3, imagem 3 %32

    • We can finally unscrew two more Philips head screws to remove the button ring.

    • Tip: Lift one end of the ring, tilting it toward the back of the alarm clock. That will get the hooks out from under the rear rim so you can start removing it..

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  5. Philips Wake-Up HF35xx Disassembly, Front screen shield: passo 4, imagem 1 %32 Philips Wake-Up HF35xx Disassembly, Front screen shield: passo 4, imagem 2 %32

    • Now the six screws holding the front screen need to be removed and the screen can be pulled away to the front.

    • Take care not to damage the internal screen.

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  6. Philips Wake-Up HF35xx Disassembly, Inner screen screws: passo 5, imagem 1 %32

    • Remove the four screws holding the inner screen assembly in place.

    • Screw organization note for later: these screws have pointed ends

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  7. Philips Wake-Up HF35xx Disassembly, Inner screen assembly: passo 6, imagem 1 %32 Philips Wake-Up HF35xx Disassembly, Inner screen assembly: passo 6, imagem 2 %32 Philips Wake-Up HF35xx Disassembly, Inner screen assembly: passo 6, imagem 3 %32

    • There are two tabs that hold the assembly in on the bottom left and right sides.

    • Using a jimmy — or any flexible, flat, metal tool, such as a putty knife — press the back tabs inwards to release.

    • Note: Do not be surprised if you have to push hard.

    • Tip: If you pull the inner screen assembly out slightly, you can see the tabs better. However, it puts pressure on the latches making them more difficult to release.

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  8. Philips Wake-Up HF35xx Disassembly, Remove back cover (Optional but recommended): passo 7, imagem 1 %32 Philips Wake-Up HF35xx Disassembly, Remove back cover (Optional but recommended): passo 7, imagem 2 %32

    • Disconnect the speaker from the main circuit board.

    • The antenna (a long white wire) has a fragile solder connection to the main circuit board and care should be taken to not yank upon it.

    • Loosen the screw and washer inside the back cover by the speaker and unwrap the antenna wire that was pinned underneath. Pull the antenna all the way through so the back cover can be removed.

    • Alternately, you may simply pull only some of it through so that the wire is slack enough that the solder joint is at no risk.

    • Caution: The speaker and the buzzer connectors are the same so be careful when reassembling.

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Max

Membro desde: 11/13/12

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14 comentários

Awesome teardown except for one little thing…

The factory sticker shows this is a 3530 which may not be different from a 3520. However, the bottom plate screw MUST be removed in order to separate the two halves. It is a little confusing saying “The bottom panel does not help gaining access to more screws. See next step.” I took that as being unnecessary, so skip.

Takkens Shoes - Responder

I was able to fix my speaker inside it i got this alarm at a thrift store for cheap turns out the one wire just needed a better conenction to get working thank you for the steps to get to it

johnstone1889 - Responder

The first photo of step 5 is a little misleading, it looks like you are unscrewing something, it made me look for the screws

Other than that this was very helpful, thank you

paulamicel - Responder

Thanks so much for this guide! The speaker in my H3510 had suddenly stopped working. I managed to take it apart with this guide. It turned out one of the wires on the speaker had come loose. We soldered it back on and that fixed it!

heleen - Responder

Thx!. Now I am able to fix the power cord which was often unplugged. So i soldered the power cable fixed to the pcb.

pibi - Responder

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