Question about Sony FD Trinitron WEGA KV-32HS510 32" TV

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Dark screen on all inputs, OSD clear

The screen was a little dark, despite the brite and contrast being all the way up. The OSD had no problem but any other input did. I turned the screen up enough on the flyback to see the retrace lines and turned it down till I could not see them anymore. This sent unit into overload protection mode and shut unit down. I am currently waiting the 4 hours for the hard reset to occur since I cannot see anything. Unit dooes not show any of the 9 service codes on the Timer LED when started or turned off. Could this be a bad flyback or the B board problem?

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Luminance is missing or the brightness. try to inspect the board at the back of the CRT see if there is an open resistor

Posted on Jan 15, 2007


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How do I lighten a dark picture

Hi Richard,
Please try reducing the contrast a little and increasing the brightness till the dark shots are clear. Please also check the back light setting. It should not be too low.This should make all the dark scenes clearly visible if it only a setting problem. In case the overall brightness has reduced, please consult a local TV Tech.

Aug 11, 2015 | Sharp Aquos Televison & Video

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My calculator has frozen up. You cannot clear it or input anything

The first diagnostics you should perform are:
  1. Make sure batteries are good and inserted correctly, respecting the polarity diagram: Yes, I myself made this mistake and it must be ruled out before doing anything else.
  2. After a change of batteries, the screen contrast can change: It may become too dark or too light. If it is too dark, you would not think about a malfunction because you see something on the scree. BUT it the screen is too light, it is easy to conclude that there is a malfunction because you do not see what the calculator is doing after you press a key.
  3. So, the second measure is to adjust the contrast. Press [2nd] key and Release it. Then Press and HOLD the UpArrow until screen is dark enough.
  4. A third easy measure is to use the TIConnect software (available on to retrieve the device Info, and if calculator is recognized to reinstall or update the OS. You need a TI USB SilverLink cable.
Here are some more procedures to perform in the order they are presented. Please read the post till the end.

  1. Remove one of the AAA batteries.
  2. Press and hold the [CLEAR] key.
  3. While holding [CLEAR], reinsert the AAA battery and then
  4. turn the calculator on.
  5. the calculator should display the message "RAM Cleared".
  6. Release the [CLEAR] key and then press it one more time to remove the message "RAM Cleared".
  1. Remove batteries including the backup battery for 5minutes.
  2. After the 5 minute period, reinsert all of the batteries and
  3. turn the calculator on.
  4. Adjust the contrast if necessary. (see above)

Apr 05, 2014 | Texas Instruments TI-84 Plus Silver...

1 Answer

The Picture on my HD-52G886 Model is really kind of dark I can still see the picture and sound is fine but a little to Dark when I try to brighten it then its really dull white.

Changing the contrast will also help brighten your screen. For best results, try changing the contrast and the brightness, to find the perfect combination for your needs.

Jul 19, 2011 | JVC HD-52G886 52" Rear Projection HDTV

1 Answer

When turned on the screen is dark

Sounds like your contrast is a little too dark. Press the 2nd key and then hold down. This should dim the contrast. If you dim it too much simply daeken it by pressing second and up.
Happy Calculating.
If this helps please dont forget to vote. Thanks

Aug 30, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

The screen comes up with a large dark square on it ,no cursor, no input is possible, all batteries are new


Contrast too high.
Press [CLEAR] key and adjust contrast (Reduce)

Reduce the contast as follows
1.Press [2nd] key and release it
2.Press [DownArrow] and release it
3. Keep repeating the sequence until contrast is adequate.

To increase contrast Do the same but press [UpArrow] instead of [DownArrow]

Hope it helps

Sep 08, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

Dark colors

Increege LOT screen preset
check G2 voltage at neck board G2 cathode
remove Sg caps
replace G2 pf

Oct 26, 2008 | LG Studioworks 700S 17" CRT Monitor

1 Answer

Gateway FPD 1830 18.1 in. Flat Panel Problem

Usually in these cases the power supply would be the issue, but you say the OSD window shows up clearly, So the LCD panel is good and the Power Supply /inverter depending on which your FPD has.
FPD 1830 should have 3 boards(logic, Inverter, Power) otherwise just 2(logic, power)

If it is super dim, the problem is the inverter. Or the Power Supply if the inverter is embedded

Otherwise what your issue is the logic board, if you can swap out that part for a good one, Chances are for sure that you will have a spanking new FPD working.

I've worked with these a lot. Im working on one right now.
I hope this helps
Wish you luck

Sep 11, 2008 | Gateway FPD 1830 18.1" Flat Panel LCD...

1 Answer

Dark image

Flyback transformers usually have 2 adjustable rods - 1 is for focus the other is for screen (G2) voltage. try turning Clockwise the Screen adjust with brightness-contrast at max. Till you see white diagonal lines, then go back until the lines disappear - then tune the brightness to your desired level.

Apr 27, 2007 | LG Flatron Ez T710BH 17" CRT Monitor

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