SmartNav 4 false contact repair

Written By: Stefano Ficacci

Comments: 4

Difficulty

Easy

Steps

Time Required

5 seconds

Introduction

Use this guide if the module behaves incorrectly or if the device does not mount properly.

Tools

Step 1

Gently open the four tabs with a small flathead screwdriver.
Carefully remove the black and silver cover.

Step 2

After detaching the two parts.
Unscrew the four hex screws with the 2mm hex key.

Step 3

Remove and separate the components
The problem is caused by the black insulating film between the two boards which appears to be pierced through.

Step 4

Remove the insulator, if present.

Step 5

Prepare new divider. I used a 0.4mm rigid piece of plastic.
You can use a rigid piece of plastic, very thin (e.g. 0.4mm)
Take measurements and fit it.

Step 6

Remake the device. Following the guide in reverse.

Does this actually help

shaneags -

Conclusion

To re-assemble your device, follow the steps in reverse order.

Author

Stefano Ficacci

Member since: 27/05/16

166 Reputation

3 comments

Has anyone ever able to fix the issue with the smartnav not powering on

Shane Agnew -

I can give only the basic level of suggestions here.

The device is not responding at all, this is the situation I'm considering here, which means: no lights and no reaction from the computer when it is connected.

You should check first the cable and the computer port, this can be done with a different cable and a different port and/or with a different device on the same cable and port, better both methods.

Once you are sure that the cable and the port are good, you need to disassemble the unit, and you may need a tester for voltage and continuity.

A visual check will tell you if there are clear signs of problems such as cracks, rust or damaged components.

Chances are that the problem is in a faulty contact (the usb connector to begin with) but it still can be a defective component (the capacitors in this case).

From here on you may need to test the power supply to the ic circuit, without short circuiting other components with the probes.

A soldering unit could be necessary then.

Stefano Ficacci -

The infrared ray does not work, is the ST890B defective?

Iron Man -