Display is blank...power light flashes at around 1 second intervals. display flashes +very faintly+ white as the power light flashes. my guess is power supply fault but... i cant figure out how to remove back panel to examine internals. I removed the 4 screws I can see, but its still not loose checked on compaq support site but no dismantling instructions

Sounds like your backlights are bad, can you see a faint picture with the flashlight test

please format the phone , use this code to format the phone
first switch of your phone then press the star(*) three(3) and call button holding these button and switch on the screen displays blank white screen for sometimes and then on .

then try to use the camera and check the flash,
if the problem check the flash hardware

Try this procedure and let me know if it does not work.

1. Ignition key in the "Off" or "0" position.

2. Press and hold the odometer button and turn the ignition key to the "Accessory" or "1" position.

3. Keep the odometer button pressed in until you see the following words in the display, "oil service", or "inspection" with "reset" or "re".

4. Press and hold down the odometer button again until "reset" or "re" flash.

5. While the display is flashing, press the odometer button again briefly but do not hold it down this time to reset the service interval indicator. After the display has shown a new service interval then "END SIA" should appear in the display for two seconds.

If the procedure fails the first time then repeat the procedure and it should clear the service interval indicator.

I would start by looking into the memory card slot to see if you have a bent pin. You may need a small light and a magnifying glass to see them.
If the pins are okay, then you can try a reset by holding down the BKT and metering buttons together for 2 seconds. The metering button is on the left, behind the off/on/release.

Thirdly, you can try a firmware update on the camera which can be found here:

NikonTech.com

1. With the key out of the ignition... press and hold the left odometer button.

2. Turn the key to position 1... Meaning radio turns on, but instrument cluster warning lights stay off.

3. Keep holding the button for a few seconds (5-10) untill the display changes and says any of these words... OIL SERVICE or INSPECTION with RESET or RE.

4. Release the button but then again press it and hold (about 5-10 seconds) untill RESET or RE flashes.

5. While the display flashes press the button one more time briefly, and if done correctly the words "end SIA" will show up in a few seconds.

Make sure you set up your laptop to display to a second screen. Depending on your Operating system, go to your display properties and go to the settings tab. Then click on the second monitor and enable it.

This error only shows in diagnostic mode, with power off choose any buttons except stop and power, press in intervals 5 seconds on and 5 seconds off until 88 appears and all light light up. If the user panel is faulted F 2 will flash in the display, press the same button you used to start diagnostics to jump to the next error code and once through 88 will flash and diagnostics will start. Sometimes once F2 flashes and the machine has not been repaired it will stick at that mode.

I would replace the control box assembly that is the most common issue with those TVs

my polaroid model #3200  does'nt come on!  the light goes from red to blue and nothing,the picture stays black with no flashing or flickering

power supply of the monitor is the culprit.Generally defective electrolytics in primary section of Power supply.