Brightness control tiny bright white dot above bar and a cloudlike white cirle on the bar itself. What is that

SOURCE: Compaq 7540 brightness

Your button is stuck. If it is stuck on the external button, try plying it forward with a needle, if it is broken internally, a technician can fix the switch on the board for you.

SOURCE: Monitor Screen Bright with horizontal white lines

I have an emachine 17" Flat Panel Monitor and I accidently touched the Standby Mode on my keyboard and now my menu won't work right. I can't adjust the color enough. If there is anything I can do to fix my problem it would be appreciated.

Thanks

SOURCE: No Picture Has a bright horizontal line with off white & gray vertical bars

The Problem Philips 27TS54 c101 27B800-7562 White horizontal line in the center of the screen. Color is present in the first half inch of the leftist corner of the horizontal line.
Audio is present and controllable. The green power led from a cold non plugged in state remains solid until CRT goes to ignite. A click is heard then the green power LED blinks.
I found service manual diagram of repair part or parts and install instructions
HTTP://WWW.servicemanuals.net/results.aspx?type=SM&brand=100&model=27ts54
I request any info or tips you might have pertaining to this problem
Thank-you
Sincerely
[email protected]
2/20/2008
P.S. 25”-27” CRT board APT187

Possible Answer Posted by PEE_WEE 4/28/2005
On the CRT circuit board(picture tube), you will find R3340, which is a 10 ohm 1/3w resistor. The location of the resistor is printed on the bottom of the ckt board. It is burned open, replace with a 10 ohm 1/2w resistor. This will solve your problem. The original resistor was sized too small, should have been a 1/2 watt. This resistor is mounted standing up on ends. Mount the replacement resistor the same way. Be careful and don't get the circuit trace too hot and damage the circuit trace. (it's very small) The resistor is located on the crt(cathode ray tube), pcb(printed circuit board) socket. The resistor supplies apx +200v to the collectors of the r, g, b, video driver transistors. If this voltage is low, it causes excess brightness(excess beam current), causing the set to "shut-down". If the shut-down is too quick, you will NOT see the excess brightness, because the picture tube has not warmed-up enough to display anything on the picture tube. To see if the set displays "excess brightness", you will need to turn the set "on" about 5 to 10 times. This will heat the picture tube enough to display "excess brightness", IF that is the PROBLEM. Of course, there are OTHER defects that will cause a tv to shut down. There are built in safety circuits, that will "activate" if excess voltage/current or heat is detected anywhere in the set.

NOTE
My resistors are not numbered the same on my crt board APT187. GSM 02/20/2008

SOURCE: Brightness adjustment not very effective - XP-sp2

Alter your gamma,brightness,contrast,etc with your grapics card settings,

SOURCE: COMPAQ 7500 monitor, MenuBar/Brightness Bar, Keys not working

replace Menu buttons (Microswitches) and check 5v path
check dry points.