It has power but it clicks off - KLH R7000 Receiver

Sustain board fault. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/

You need to set or choose the Windows XP power scheme according to the way you want it.
1. on the desktop, click on start at the bottom left of the screen
2. on the pop-up window, click on Control Panel
3. in Control Panel window, double click on Power Options
4. in Power Options Properties window
5. under Power schemes, click on v for a list to select the appropriate power scheme.
6. under Settings for power scheme selected, customize as necessary and then click Save As...
7. click Advanced tab
8. select desired Power buttons action ... close lid, press power button, press sleep button
9. click Hibernate tab
10. under Hibernate, if required, click the check-box to toggle the Enable hibernation
11. click OK to exit Power Options Properties

Click on the "Start" button.

Click on "Control Panel" in the right-hand task pane.

Click on "System and Security," located on the upper left-hand corner of the screen.

Click on "Power Options."

Click on your desired power plan. Windows has three default power plans: "Balanced," "Power Saver" and "High Performance."

Click "Change Plan Settings."

Adjust the brightness and performance settings that you want your computer to use while operating under battery power.

Click "OK" to confirm these changes.

or you can use battery softwares for controlling battery level. Good Luck

In that case you aren't actually shutting it down, you are putting it in sleep mode.
In Start > Turn Off Computer window make sure you always click on the Turn Off button but if you're in Vista or 7 pressing Start > Power sends the pc to Sleep by default. To change that to normal behaviour - the Stop button actually stops the pc - follow this:
1 - Open Power Options by clicking the Start button , clicking Control Panel, clicking System and Maintenance, and then clicking Power Options. 
2 - Under the currently selected power plan, click Change plan settings.
3 - In the Edit Plan Settings dialog box, click Change advanced power settings.
4 - In the Power Options dialog box, click the plus sign (+) next to Power buttons and lid to expand the list.
6 - Click the plus sign (+) next to Start menu power button to expand the list; in the Setting list select Shutdown for the Power button. Click OK.

Click Start, point to Settings, and then click Control Panel. Double-click Power Options. In the Power Options Properties dialog box, click the advanced tab You are able to change the settings here. Click OK or click Apply, and then press the Power button on your computer. When you click Apply, your new settings are saved, but the Power Options Properties dialog box stays open. When you click OK, your new settings are saved, but the Power Options Properties dialog box closes.

Step 1 - Disable the Windows Power Management
In Windows, right-click the Desktop and select Properties in the menu list. 2. Click the Screen Saver tab and then click the Power button. 3. Under Power schemes, select Always On in the drop down menu. 4. Under Settings for Always On power scheme, select Never in each of the drop down menus. 5. Click OK on the Power Options Properties window and then click OK on the Display Properties window.
Step 2 - Fully charge the battery
Connect the AC adapter to the notebook.
Charge the battery until the Windows battery meter is at 100%.
Step 3 - Fully discharge the battery
Remove the AC adapter. Keep the notebook on until the battery has completely drained and the notebook automatically turns off. Connect the AC adapter to the notebook. Keep the AC adapter connected to the notebook until the battery has completely charged.
Step 4 - Enable the Windows Power Management
In Windows, right-click the Desktop and select Properties in the menu list. Click the Screen Saver tab and then click the Power button. Under Power schemes, select Portable/Laptop in the drop down menu. Click OK on the Power Options Properties window and then click OK on the Display Properties window.

Power management lets you reduce your Notebook power consumption. Your Notebook has two power management modes:

• Hibernation is an energy-saving feature and safeguard that saves information to the hard drive, then turns off your Notebook. When you resume from Hibernation, your information returns to the screen where you were previously working. Your Notebook hibernates when the Power button is pressed, when the battery has little power left, or when your Notebook (operating on battery power) is in Sleep mode for more than one hour.
• Sleep, also called Standby, is an energy-saving feature that reduces power to system components that are not being used. When Sleep is initiated, your information is saved in Random Access Memory (RAM), and the screen is cleared. Your Notebook is still on, but the display is blank. When you resume from Suspend, your information returns to the screen where you were previously working.

Automatically put your notebook into hibernation Windows can automatically put your computer into Hibernate mode after a specified period of inactivity. Or Windows can detect when your batteries are running low, and then automatically put your computer in Hibernate mode to save your work before the battery fails. NOTE: Using Power Options in Control Panel, you can adjust any power management option that your notebook's unique hardware configuration supports. Because these options may vary widely from computer to computer, the options described may differ from what you see. Power Options automatically detects what is available on your computer and shows you only the options that you can control. To automatically put your computer into hibernation:

1. In Category view, click Start , click Control Panel , click Performance and Maintenance , and then click Power Options . In Classic view, click Start , click Control Panel , and then click the Power Options icon.
2. Click the Hibernate tab, select the Enable hibernate support check box, and then click Apply . Figure 1: Enable hibernation check box
3. Click the Power Schemes tab, and then select a time period in System hibernates. Your computer hibernates after it has been idle for the specified amount of time.

Manually put your notebook into hibernation This feature is available only on notebooks with the Windows XP operating system installed.

1. In Category view, click Start , click Control Panel , click Performance and Maintenance , and then click Power Options . In Classic view, click Start , click Control Panel , and then click the Power Options icon.
2. Click the Hibernate tab, and then select the Enable hibernate support check box. NOTE: If the Hibernate tab is not available, your computer does not support this feature.
3. Click OK to close the Power Options dialog box.
4. Click Start , and then click Turn Off Computer . In the Turn off computer dialog box, hold down the Shift key. The Stand By button will change to Hibernate. Click Hibernate .

Please confirm 9 volts on Power Board as shown in below picture...


Regarding click-click-click sound of relay its caused by Serial Clock and Serial Data signal failure in digital ICs. Please confirm above signals by using Oscilloscope.

To change the power scheme

1. In Windows XP, click Start, then click Control Panel. The Control Panel window opens. If your Control Panel is in Category View, click Performance and Maintenance.

- OR -

In Windows 2000, click Start, Settings, then click Control Panel. The Control Panel window opens.

1. Click/Double-click the Power Options or Power Management icon. The Power Options Properties dialog box opens.

1. Click the arrow button to open the Power Schemes list, then click the power scheme you want.

- OR -

Set the timers, then save your custom power scheme by clicking Save As and typing a name for the scheme.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

Hi Ann,

Laptops have options to prolong battery life that can sometimes be a bit tedious. No problem, to change the settings though.
Do this:

• Click START
• Click Control Panel
• Double-Click Display
• Click on the Screen Saver Tab
• In the Monitor Power box Click the Power Button
• Under the Power Schemes Tab, in the Power Schemes box, Click the Power Schemes drop down menu.
• Click on 'Always On'
• At the bottom, Click on OK
• At the bottom, Click on OK

Keep in mind, after doing this, the conservation of battery power is no longer automatic. It's just as easy to change back, if necessary.

Any problems, additional questions click on the ASK button.