The back light a and c - Dell PowerEdge 830 Server

Hello
6 time red light blinking means back light problem please replace the back light after replacing back light your set become ok
thank
M Nasir

I will test the back lights first.

To test the back lights, you need to disconnect the cable between the main power supply & the main board, apply the AC power to the power supply, if the back lights are not light up, the back light are defective.

it is back light problem led strip is faulty replace with new one

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
Some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

I would check the ground connection on the back which could affect the lights not working

bad either inverter board for screen back light or busted back light.you will need to remove back cover to access the inverter board and back light inside.the back light is covered with plastic and metal shield located at the top and lower portion of the screen panel display.

The back light bulb is dead. Or check your phone settings, look out for display settings, select back light time/settings and see if the back light is turned off. And if not, the the back light bulb is dead for real.

Take care

New Power / Lock button usage
Using the Power or Lock button on the top of the BlackBerry smartphone, you can perform the following tasks depending on the state of the BlackBerry smartphone:
State of the BlackBerry smartphone: Unlocked and the back light is turned on

Action: Press and release button.
Result: Locks the BlackBerry smartphone and turns off the back light.

Action: Press and hold button.
Result: Turns off the BlackBerry smartphone.
State of the BlackBerry smartphone: Unlocked and the back light is turned off
Action: Press and release button.
Result: Turns on the back light.

Action: Press and hold button.
Result: Turns on the back light and displays the power off prompt.
State of the BlackBerry smartphone: Locked and the back light is turned off

Action: Press and release button.
Result: Turns on the back light and displays the unlock prompt.

Action: Press and hold button.
Result: Turns on the back light and presents the power off prompt.
State of the BlackBerry smartphone: Locked and back light is turned on

Action: Press and release button.
Result: Presents the unlock prompt.

Action: Press and hold.
Result: Presents the power off prompt.

Hello atahirkhelii,

This is an indication that your back-light or inverter has malfunctioned. This problem is tricky, because if the back-light is a separate unit you will be able to repair this problem by replacing the back-light or one of its associative components, however if the back-light is part of the screen so as to make it one unit, then the repair job becomes cost prohibitive.

The troubleshooting process is as follows:

1) take the cover off of the screen panel and expose the back of the screen and the circuitry of the main board.

2) with a multimeter measure the test point voltages as compared to the schematic and note any abnormalities.

3) using the schematic as a guide determine if the back-light can be turned on manually (this is just a test to see if the back-light or its circuitry is the problem)

4) if the back-light circuitry is faulty replace the malfunctioning components,if the back-light is faulty replace the back-light (if possible, because the back-light may be part of the screen)

5) If you can replace the back-light order it from the manufacture to insure compatibility.

6) if you can not replace the back-light because it is part of the screen, contact the manufacture and ask them the cost of a new screen/back-light combination.

7) replace the components, close the unit back up and then do a 48hour burn it test on the player.

I hope this helps,

Thank you,

Shuttle83

There is a contact (not short) between wire to brake light and to back light on passenger side, when you press the pedal, electricity is absorbed by barake light bulb and back light dim out. Check cables and connectors, if necessary follow back cables to battery.
If the contact is a short the back lights fuse will blow, I think it is a contact between same polarity cables, not a short.

Regards