My blackberry scroll pad is not working, and i can't scroll anywhere. i took it to the shop and the man told me it was a hardware problem, i have pop reset it and soft reset it and nothing seems to work. i have even had the trackpad replaced. apart from this, the phone works as normal but just the trackpad does not respond

Hi Titchypink.
this is all i could find out,hope it helps you out.
Trackpad, trackball, or keyboard not working on a BlackBerry smartphone running BlackBerry OS 7.1 and earlier Article Number: 000029640 First Published: April 26, 2017 Last Modified: April 26, 2017 Type: Support

Environment

• BlackBerry smartphones running BlackBerry OS version 6 to 7.1
• BlackBerry smartphones running BlackBerry Device Software 5.0

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Overview

In some situations, a BlackBerry smartphone with a trackpad or trackball may experience issues with sensitivity, latency, or scrolling. Additionally, the BlackBerry smartphone keyboard, or other buttons may be unresponsive.
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Cause

This issue might be caused by one of the following:

1. The trackball/trackpad sensitivity needs to be adjusted.
2. Make sure the trackball/trackpad is not affected by a software freeze or an application freezing.
3. The BlackBerry Device Software is out of date and requires an update to resolve the trackpad, trackball or keyboard issue.
4. The physical trackpad, trackball or keyboard hardware is malfunctioning.

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Resolution

Resolution for Cause 1
Complete the steps in Article 5447 to ensure the trackball/trackpad sensitivity is correctly.
Resolution for Cause 2
For BlackBerry smartphones running BlackBerry OS version 6 to 7.1 using a trackpad, complete the following:

1. From the Home screen, select Options.
2. Select Typing and Language.
3. Select Trackpad Sensitivity.
4. Ensure Audible Roll is selected.
5. Rapidly roll the trackpad up, down, right, and left.
6. If an audible click is heard while not responding, proceed to Resolution for Cause 4 as this could be a software related problem.

For BlackBerry smartphones running BlackBerry Device Software 5.0 using a trackball, complete the following:

1. From the Home screen, select Options.
2. Select Screen/Keyboard.
3. Ensure Trackball Audible Roll is selected.
4. Rapidly roll the trackball up, down, right, and left.
5. If an audible click is heard while not responding, proceed to Resolution 4 as this could be a software related problem.
6. If an audible click is not heard, the problem may be related to a hardware issue. Please contact the wireless service provider for additional steps.

If an audible click is not heard, the problem may be related to a hardware issue. Please contact the wireless service provider for additional steps.
Resolution for Cause 3
To update BlackBerry Device Software using BlackBerry Desktop Software see, Article 11320.
or
To update the BlackBerry Device Software on the BlackBerry smartphone visit http://www.blackberry.com/update/
Resolution for Cause 4
Use the BlackBerry Virtual Expert diagnostics application. For more information, see Article 35973.if not try this link. blackberry scroll pad is not working Google Search