Pioneer SD P5071-K has a dark picture, though, a good one.

Sounds like your Tcon board is giving issues.

If your TV seems to be darker than you think it should be, it is possible that the problem is with the light sensor. The light sensor will automatically adjust the picture brightness based on the ambient light that is in the room, (i.e. if the room is bright the picture will also be bright, if it is dark the picture will also be dark).

To turn this feature off go to Settings > General Setup > Light Sensor.

This is not a projection set; but a picture tube set or CRT (Cathode Ray Tube) technology. If the set is working correctly you should be able to go into the menu and set the color, brilliance and contrast to get the right color and picture intensity. If the controls don't give you what is correct viewing it may be over age and need an adjustment of the internal chroma circuits - which may cost more than the set is worth since it is quite old. Hope this helsp.

Air holes at bottom and in top of armoir?

Try it with back off and doors open. If it works you need the air holes.

TRY GOING IN MENU AND AJUSTING PIC QUALITY
INCREASE THE BRIGHTNESS , IF YOU CAN

Hello, I too experience this exact same problem. In my opinion, any television under 2 grand is probably going to have some slight imperfection as this; I have tried a few different ones myself. To some, it would appear to only be a minor annoyance, but to those who truly can distinguish a good quality picture between a bad one, or to those people, such as myself, who would find something like this to be unacceptable, this is a disheartening situation.
My friend, I have tried many different settings to see which ones might resolve this issue with the blacks in the picture, or at least reduce it to a barely noticeable level and I have found that when I select the CUSTOM picture mode, reduce the contrast to about 60, turn up the brightness to 62, turn OFF blur reduction,x/v/ color on, CATS on, MPEG NR ON, turn Dark level to LIGHT(this is important) add a little bit of extra color for ex. 52, and sharpness to 75, that this produces a pleasing to the eye performance when watching blu ray movies and dvd's. The flickering is reduced to almost nothing, and the picture quality actually appears sharper and more ethereal in certain ways.
The downside to this is that you are lacking some true depth in the picture's darks, but after your eyes adjust and you are watching a good quality movie, you will notice that there still sort of is enough darks there to compensate. Further fine tuning may produce even better results, jsut have to keep playing around with it. But I am now convinced after hearing somebody come forward with the same exact problem i'm having on the same tv, that it is not a defect but just an imperfection that you sometimes have to deal with when you don't spend like 5 grand on a tv. Good luck and happy viewing!

Go into the tv menu and select the Preferences menu and set your picutre preference from Theater to Normal. The TV is currently in Theater mode, wich is for viewing with no lights on in the room. Switching it to normal lightens the pictue a lot.

Try hooking the TV to a different outlet fed by a different breaker. Does the problem go away? If so, the culprit may be a wiring problem in your house that is causing the TV not to get enough power unless the dining room light is on.If in doubt, consult an electrician to make sure both the dining room light and TV outlet circuits are working properly.

Does the TV have a light sensor? If so, turn it off.
The light sensor limits the backlights intensity at night or when it's dark in your room in order for better vieweing convenience.

If you are in a dark environment, it really pains your eyes when the view is too bright. Same works the other way around. If it's day, and light in your room. The light sensor will dimm the backlight for it isn't needed.

Let me know if this solved your question.

Greetings,

DarkNeogen

The green gun in your picture tube is set a little too high. If you are experienced in removing the back cover of TV's,etc., you may try to find the drive and/or bias controls either on the circuit board that plugs on to the neck of the picture tube or mounted on the main circuit board of your TV. These controls are usually labeled. If you can find them, locate the green bias or drive control and back it down a little while watching the picture through a mirror. A slight adjustment may correct your problem.tJIS IS CALLED GRAY SCALE ADJUSTMENT. BE CAREFUL THERE ARE SOME HIGH VOLTAGE CIRCUITS NEARBY. WORK WITH ONE HAND AND USE AN INSULATED TOOL TO MAKE ADJUSTMENTS I hope this may help you.AGAIN BE CAREFUL!! Stargazer