The Official HP Pavilion 1080P DLP Owner's Thread - Page 313

Originally Posted by ctomguy

Well, I just got a voicemail saying that "due to a backorder situation, [my] delivery will have to be rescheduled," so I won't be getting my new TV Wednesday after all.

I'm going to call them back after work tonight and see if they can replace the main board / power supply more quickly than they can replace the entire TV, because I don't know how long this backorder situation will last.

Very frustrating.

Originally Posted by aadano

I have not visited this site for a little while, but have come to some of the same conclusions that you all have. I have decided that there is a heat issue. I have expirimented with the optional fans also. Another thing I found out was this: When the posterization occurs at let's say the zero setting on the color wheel, I "exercise" the wheel setting by taking it up to around 500 and letting it sit like that for a while. then I take it back down to zero, and I have a great picture for a while, sometimes days.

Originally Posted by lexx

With all this "heat and air circulation" discussion, thought I'd pass on my experience with the 6580 I've had for over two years now.

Other than a minor speaker buzz repair made under warranty, my TV has run flawlessly. It is on daily, and is still on the original bulb.

I am connected to an SA8300HD cable box set to 1080i via an HDMI cable. I never change the resolution, and do not have any game consoles connected.

Our house has forced air heating and air conditioning, and just by luck, the TV happens to sit just in front of a very large return air vent' at floor level. Air constantly flows over the TV as it heads for this return air vent (very close by), and I'm sure takes some of the TV heat with it. Not sure if you can make a direct connection between my good luck and the extra air flow around the TV, but evidence seems to be building in that direction.

I do have a heat problem on a computer that runs very hot, streaming internet content. (The computer would shut down on its own). I removed one of the side panels from the computer box and added a six inch fan, powered from the extra fan connection on the mother board. The heat dropped dramatically, and solved my problem. If I encounter any of the problems described in this forum I'd have no hesitation in adding a fan or two to the 6580, even if it involved cutting an extra hole in the plastic TV backing. Fans are inexpensive and some are specifically designed to run quietly.

Anyway, my observations. Love this TV by the way. Have yet to see anything in the stores more impressive.

Cheers

Originally Posted by ronawc

... I would be forced to guess at a good location to pull juice from the pwr supply module.

Originally Posted by cosmicvoid

Sounds like a bad idea. What I would do is look at the left fan, since its the easiest to access, and see what voltage it uses. Then, find a low power relay to put in parallel with the fan, and use that relay to switch a 120 volt AC fan. If the HP uses PWM to do fan speed control, then this idea would fail, but I think the fans are always full on.

Originally Posted by lexx

With all this "heat and air circulation" discussion, thought I'd pass on my experience with the 6580 I've had for over two years now.

Other than a minor speaker buzz repair made under warranty, my TV has run flawlessly. It is on daily, and is still on the original bulb.

I am connected to an SA8300HD cable box set to 1080i via an HDMI cable. I never change the resolution, and do not have any game consoles connected.

Our house has forced air heating and air conditioning, and just by luck, the TV happens to sit just in front of a very large ‘return air vent’ at floor level. Air constantly flows over the TV as it heads for this return air vent (very close by), and I’m sure takes some of the TV heat with it. Not sure if you can make a direct connection between my good luck and the extra air flow around the TV, but evidence seems to be building in that direction.

I do have a heat problem on a computer that runs very hot, streaming internet content. (The computer would shut down on its own). I removed one of the side panels from the computer box and added a six inch fan, powered from the extra fan connection on the mother board. The heat dropped dramatically, and solved my problem. If I encounter any of the problems described in this forum I’d have no hesitation in adding a fan or two to the 6580, even if it involved cutting an extra hole in the plastic TV backing. Fans are inexpensive and some are specifically designed to run quietly.

Anyway, my observations. Love this TV by the way. Have yet to see anything in the stores more impressive.

Cheers

Originally Posted by gumby61

Hey everyone. I know this isn't the right forum for this but I was hoping some kind person can point me in the right direction.

I have an HP LCD tv that I turned off one night and the next day.. turned it on...get the white screen with the HP logo then goes black. TV is still on.. I have searched the forums but am missing something...

Originally Posted by DPlettner

You can probably find some people that own your TV in the LCD Flat Panel Forum. Here is a search in that forum showing threads that have "HP" in the title:

http://www.avsforum.com/avs-vb/searc...archid=8780998

-Dave

Originally Posted by swampster

hi, i'm new here. i own the md5880n for almost two years now and i've noticed a problem as of late.
i notice my tv flickers in brightness and then turns off. maybe happened two or three times over the last two months or so. what i did to reset this was pull the power plug and wait a bit and plug it back in. today, i noticed flickering again but hasnt turned off yet. i was thinking it might be a small power spike because i have a meter and its telling my input power is fluctuating at around 128V which is higher than normal. but i'm now starting to think my bulb is going. anyone with ideas?
also, whats the difference between normal bulb life ending and light engine going. how do you know which one?
one final question. i've noticed this periodically with my tv over the last year or so. the tv is running fine but i notice the blue light is flashing (2secs on, 2 secs off). i looked in the manual on that and it say nothing about a flashing blue light? any ideas?




tia swampster

Originally Posted by swampster

hi, i'm new here. i own the md5880n for almost two years now and i've noticed a problem as of late.
i notice my tv flickers in brightness and then turns off. maybe happened two or three times over the last two months or so. what i did to reset this was pull the power plug and wait a bit and plug it back in. today, i noticed flickering again but hasnt turned off yet. i was thinking it might be a small power spike because i have a meter and its telling my input power is fluctuating at around 128V which is higher than normal. but i'm now starting to think my bulb is going. anyone with ideas?
also, whats the difference between normal bulb life ending and light engine going. how do you know which one?
one final question. i've noticed this periodically with my tv over the last year or so. the tv is running fine but i notice the blue light is flashing (2secs on, 2 secs off). i looked in the manual on that and it say nothing about a flashing blue light? any ideas?

tia swampster

Originally Posted by DPlettner

Not a bad response for an email inquiry. I have seen much worse "scripted" responses. It seems similar to the kind of info you get here, but at least they suggested a few things to try that nobody else suggested.

If you search this forum, there is also a sequence for a master reset. IIRC, it involved holding down two buttons on the TV. It will wipe out all your custom settings, but it can't hurt to give it a try.

-Dave

Originally Posted by aadano

Correction, I have a fan blowing on the right side of the TV, not the left. So, after I wrote that I haven't had a problem for a week, I went out to find a slight posterization problem on my TV. I ran the wheel up to 400 and left it there for about 10 minutes and put it back to zero and its been good for hours again.

Originally Posted by ronawc

Just sharing in hopes it will help others experiencing "light engine" trouble.

My 6580 developed posterization issue that is corrected by adjusting the color wheel index - as explained in detail in earlier post. This posterization used to begin only after about 30 minutes of TV on. Adjusting index worked fine for a few months, without further problem.

Recently, new picture issues have surfaced. Posterization is almost immediate, unless index is set very low. Even with setting low, after about 2 hours of TV on, posterization begins followed by flashing blue in the background followed within a couple of minutes by an unwatchable mess. After turning off the TV from this messy state, the screen continues to flash occasionally for a minute or two. Quickly cycling power does not correct the problem, but leaving the TV off for about 10 minutes results in about 20 more minutes of excellent picture again before symptoms reappear. Longer time off approaches the 2hr limit.

The above led me to conclude the observable pq symptoms are heat related. I removed the back cover and positioned a portable room fan behind the TV to blow across the electronics. In this config, the TV runs all day now without problem.

Not knowing root cause, I plan to wait and see if the room fan fix holds. If it continues to work, I will probably add a box fan inside the TV and replace the back cover. I'm starting to wonder if the root cause may be as simple as one or both of the little box fans inside the TV is slowing down.

Originally Posted by vinnyboy

..........and then place a small 6" fan blowing on the back of the set except the vent where the heat is blown out for the lamp. I strongly encourage this practice with any manufacturer's set where heat is felt to be excessive................. Vinny

Originally Posted by ronawc

I started with a fan on both sides (intentional overkill). Once that proved to work, I removed the one on the right. Really a random choice, but I was slightly more suspicious of the power supply and lamp zone. So your fan blows from the right and mine blows from the left - so I doubt it really matters which side as long as there is improved air movement across the back of the TV. I have noticed a little posterization on certain scenes until the TV warms up (about 5 minutes), then it goes away. So I haven't tried running up the CWI, letting it sit, and then putting it back down. The increased airflow seems to have stabilized the situation.

Meanwhile, back at the ranch, I purchased a new bulb and a new control module from a fellow member back in mid December. They seem to be lost/delayed in shipping. If/when they arrive, I will do a bit more troubleshooting and share the findings. I'm curious if either impacts the posterization and/or CWI settings.