跳转到主内容

本拆机指南正在进行中 – 定期刷新以看到更新!

在此拆机指南中使用的工具

简介

Garmin's latest forerunner revision provide a good feature set to compete with other fitness watches.

In following other manufacturers, a glued front technique has now been adopted by Garmin.

The unit featured here developed a fault, in under two years of active use.

Support from Garmin quoted a £100 fee to replace the device out of warranty (approximately a third of the cost of the device).

Instead of paying this, let's dive into a teardown and share some information instead.

  1. Garmin Forerunner 735XT Teardown, Garmin Forerunner 735XT Teardown: 步骤 1 中的图像 1,1
    • The strapless 735xt, the straps are secured by two T6 screws on each side.

  2. Garmin Forerunner 735XT Teardown, Prise off the front: 步骤 2 中的图像 1,2 Garmin Forerunner 735XT Teardown, Prise off the front: 步骤 2 中的图像 2,2
    • The front is glued

    • Use an iFixit Spuder to prise around the glue. It's not necessary to use a heat gun here.

  3. Garmin Forerunner 735XT Teardown, Carefully remove the screen: 步骤 3 中的图像 1,3 Garmin Forerunner 735XT Teardown, Carefully remove the screen: 步骤 3 中的图像 2,3 Garmin Forerunner 735XT Teardown, Carefully remove the screen: 步骤 3 中的图像 3,3
    • Once the screen moves, carefully remove the ribbon connector and the screen.

  4. Garmin Forerunner 735XT Teardown, Remove the main board: 步骤 4 中的图像 1,3 Garmin Forerunner 735XT Teardown, Remove the main board: 步骤 4 中的图像 2,3 Garmin Forerunner 735XT Teardown, Remove the main board: 步骤 4 中的图像 3,3
    • Two T6 screws hold the mainboard to the body.

    • The main board will move from where the Spuder is inserted.

    • Remove the green protective tape and disconnect the second ribbon cable before proceeding.

  5. Garmin Forerunner 735XT Teardown, Disassembled: 步骤 5 中的图像 1,3 Garmin Forerunner 735XT Teardown, Disassembled: 步骤 5 中的图像 2,3 Garmin Forerunner 735XT Teardown, Disassembled: 步骤 5 中的图像 3,3
    • The unit will now be disassembled

    • Unplug the battery by lifting up the connector from the bottom.

    • Further disassembly and analysis to follow...

  6. Garmin Forerunner 735XT Teardown, Closeup: 步骤 6 中的图像 1,3 Garmin Forerunner 735XT Teardown, Closeup: 步骤 6 中的图像 2,3 Garmin Forerunner 735XT Teardown, Closeup: 步骤 6 中的图像 3,3
    • GNSS receiver looks like MediaTek MT3333 with external amplifier+filter+chip antenna. And ARM7 CPU.

    • The watch has at least 3 Cortex-M4 microcontrollers, not counting Ant+ or GNSS chips! Microchip ATSAMG51, ATSAMG53 and MAX32360

    • nRF51422 contains ANT+ and Bluetooth LE functionality. And Cortex-M0 CPU to run these.

  7. Garmin Forerunner 735XT Teardown, Further closeup: 步骤 7 中的图像 1,2 Garmin Forerunner 735XT Teardown, Further closeup: 步骤 7 中的图像 2,2
    • Insert wisdom here.

Peter

于2013年07月19日注册

145 信誉积分

撰写一个指南

11条评论

I’ve not attempted to re-assemble yet. The glue was held around the LCD display.

These units are identical to the manufacturing process of more popular units such as the 235. So someone might of given a guide to putting those back together.

The core thing to keep in mind is that a decent seal is going to be required to avoid any water damage.

Peter - 回复

When you have a water damaged Forerunner 735, it is probably not necessary to take the 735 completely apart, to repair it. Just take away the front, and then use a air pressure spray to blow out the water. I did not test it, but here is an instruction, which shows that this worked for the Vivoactive HR:

https://www.youtube.com/watch?v=rAKbZ_Tx...

Peter Gamma

Peter Gamma - 回复

Correction: It was not air pressure spray but CRC electronic cleaner Dean Stucker used in his youtube video which shows how to repair a Vivoactive HR. Difficult to find here in Europe. Alternatives?

Peter Gamma - 回复

添加评论

浏览统计数据:

过去的24小时: 25

过去的7天: 118

过去的30天: 396

总计 16,278