Question about Philips 202P40 22" CRT Monitor

1 Answer

Phillips 202p4 very dark need to make it brighter but at 100 brightness it is still quite dark please send any assistance or advice

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 6,966 Answers

Hi,

Assuming no hardware/component fault, the dimness of a monitor signifies near end of life of the CRT (tube).

There are a few tricks/tweaks that can be done but of course these are just prolonging the inevitable. Should you want to give any of them a try, they are:
1. Adjust the Screen controller at the rear of the Flyback Transformer (FBT) to maximum effective brightness. It may also be needed to adjust the Focus control;
2. In some versions, there are sub-bright and/or Automatic Brightness Limiter (ABL) trimpots soldered direct to the PCB that can be adjusted;
3. the heater voltage can be slightly increased either by using a stepdown transformer that has multiple taps about1~2 amps. In some instances, the heater has an external loop around the core of the FBT, adding a turn or so would also serve the same;
4. adding a 100uF/160V capacitor after the diode of the FBT's output that supplies the 3 color drive transistors.
5. use the HV/anode cap of a small monochrome monitor to inject high voltage to the screen grids of the picture tube of the 22" CRT. the heater of the 22" CRT must be temporarily shorted.

All of the above require familiarity and knowledge of electronic components and circuitry, use of a soldering iron and working around high voltages.

If you are not comfortable going through this route, perhaps your best bet would be to seek the services of a qualified professional.

If your concern has not been corrected after completion of the above procedures, you may need to replace the monitor.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FIXYA.

Posted on Feb 15, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

E74 set 100% still too dark to see photos


A veteran IBM. Open the case and try to locate a sub-brightness knob and carefully "add" more power. And the end is not so far, I am afraid.

Apr 01, 2014 | IBM E74 17" CRT Monitor

1 Answer

Monitor is set to 100%--still too dull


If the picture is dark, on screen brightness will not overcome this.

Apr 01, 2014 | IBM E74 Monitor

1 Answer

Dark's too dark, Brights to bright?


Monitor Blank hanya dengan warna putih di monitor. bagaimana cara pengatasannya?

Oct 04, 2013 | Sceptre Computers & Internet

1 Answer

Screen very dim, but set on 100% brightness.


Good Morning! With the 8 years operations of your emachines monitor, some of its electronic parts might incurred cold solder joint connections from its circuit board & possibly some of its Capacitor parts are already worn-out. please try to get assistance from an electronic service technician which will surely diagnose & repair the problem. best regards.

May 04, 2009 | Computers & Internet

1 Answer

Monitor brightness


Hey...Chris,
It's seems one of your backlight fluorescent tubes it busted, need to be replaced...

Oct 30, 2008 | Relisys RLT1720 17" LCD Monitor

2 Answers

Monitor too dark....


inverter board bad. this runs your lcd lamp(s) but is not in the screen.

Oct 02, 2008 | ViewSonic VA702b 17" LCD Monitor

1 Answer

Brightness


there is two transistors in brightness section near eht so you can check all small transistors around eht

Jun 24, 2008 | TTX Advantage Series -1770 (White) 17...

1 Answer

Acer AL11511


To even things out you need to use the controls on the monitor to lower the brightrnes. to acceptable levels. When playing a DVD there are seperate controls in the software and your graphics driver to adjust the Video Overly settings. Look for settings called gamma and brightness in the video overlay settings in the windows display properties panel. This should help even things out some. Deal is to crank down the brightness on the monitor and crank it up in the video settings in windows. It will make the DVD's brighter and rest of the time the regular screen darker.

Jun 26, 2007 | Acer AL1511 15" LCD Monitor

1 Answer

Color and brightness problem


Has it been dropped? At first it sounded like it may be have been an intermittent short if the CRT guns, but it's hard to say. Since it doesn't seem to be the cable, it sounds like this one needs component-level troubleshooting.

Jan 07, 2007 | LG Flatron F700B 17" CRT Monitor

Not finding what you are looking for?
Philips 202P40 22" CRT Monitor Logo

185 people viewed this question

Ask a Question

Usually answered in minutes!

Top Philips Computers & Internet Experts

The Knight
The Knight

Level 3 Expert

69878 Answers

micky dee

Level 3 Expert

2638 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Philips Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...