Question about ViewSonic VPW450HD 42 in. HD-Ready Plasma Television

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Macwynn tv blacking out

Keeps going blank like its over heating, even if we put a fan on it to cool. comes back on for a few then blacks out. please help

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Cleaning inside the cabinet. (and there wasn't a lot of dust). and clean connections.

Posted on Oct 10, 2010

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I had my camera in my purse and when i took it out and turn it on. my camera turns on white screen but with a black liquid spot on it. is it fixable? please help my camera is brand new.


Your purse would have happened to be black and the camera on the outside pocket would it?

If so and it was in heat then the LCD screen has super heated, it might come back after a few hours to cool. There is operating temperature ranges listed in the manual extreme heat and cold will just kill most digital point and shoot type cameras, sometimes they come back sometimes not.

I would also take the battery out of it and let it sit for a few hours to cool DON'T put it in a cold place let it come up to room temperature gradually.

Apr 12, 2011 | Cameras

1 Answer

Powers on and off all the time like a thermal switch is tripping when I put a fan behind it it stops


It may be a safety thermistor component inside tripping as it overheats just as you suspect - working like an electrical fuse, but responds to heat instead. They can go faulty and start turning the power off too soon

Another possible cause is a dry solder joint (very common problem). It's ok while cool, but after a few minutes of being on, the heat in TV causes the tiny solder break to widen just enough to switch it off.


If you can leave it on with the fan blowing on it, and it does keep going on & off without you touching it, then i'd say it's 95% certainly a thermistor.

If it turns off, and you have to turn it back on manually (it goes onto standby or off completely), then it could be either, causing the problem.

Another final thing I see as possible is, the screens inverter can be heating up and going off (the TV will stay on really, but the screen will go black as if it's off, and when cooled even slightly it can turn back on again. You can check this easily by putting a bright lamp close up to the screen. The picture will still be there, but very very dark - a flat light gently touching against the screen will allow you to just about see the TV picture.

(the screen inverter is a special high powered circuit that takes a lower voltage (usually about 12 volts) and converts into a huge amount needed to work the powerful bulbs in TV screens.

Nov 09, 2010 | Toymax Magnavox 37MF331D 37 in. LCD TV

1 Answer

Outside ac unit operates but no blower. Fan "on" does not operate from thermostat. However "heat" works fine furnace and blower. ???


Go to furnace and shut off power, remove blower door compartment. Inside you will find a control board where thermostat wires are connected. Should look something like this:

R-Red Wire= Power
G-Green Wire= Fan
W-White Wire=Heat
Y=Yellow or Blue Wire=Cooling.

It sounds like you have a bad motor speed. So try this:

With Power Still Off, on the same control board there is a terminal usually marked Cool and Heat. There should also be a couple of terminals that are named park. The wires hooked to these are the fan wires..

Exchange the Heat and Cool wires on the terminal board. Put everything back together and try cooling again, if the fan comes on
then you have a burnt out motor speed. Go back to furnace and change
the heat and cool wires around, next if Cooling had the black wire hooked to it, put yellow or blue on Cooling and black to park.


Note: The reason why you put the blower door back on is because it
has a door switch that if not properly seated, you wont be able to power
up anything

Jun 22, 2010 | Heating & Cooling

1 Answer

Exchange a cpu fan connector


You can connect it red to red; black to black; and yellow
to white. That's it. Hope this will help you.

Dec 12, 2009 | R.A.M. Computers 486 CPU COOLING FAN WITH...

1 Answer

My tv turns on properly but after a few minutes it goes blank


you are having a heat related issue and the component or parts are failing. using a hair dryer blowing into back of set will make it black out and a portable fan should cool it enough to come back on. unless you know a good cheap tech, repairs are costly. i left the business when t.v' s became disposable.

Sep 21, 2009 | Panasonic CT-32D10 TV

2 Answers

2002 pt cruiser overheating was told i need a new raditor and thermostat for 1 grand sounds fishy


Flush rad & change coolant & thermostat. Check operation of rad fan, & make sure it is coming on when engine reaches normal operating temperature. Be sure to bleed air out good when refilling rad/cooling system. Start engine & turn heater on when refilling & let rad fan come on & off at least 2 or 3 times before putting cap back on rad, and refill rad as needed as you do this. then fill return bottle to proper level & see what happens.

Jun 27, 2009 | 2002 Chrysler PT Cruiser

1 Answer

Black rectangle block will not go away on pc monitor[top right]


hi your problem is caused by heat and a faulty power switch board in front which is also connected to usb and front audio first the heat problem download program fan control I8kfanGUI this program is free fan control set you fan speed to max to cool cpu dell made bad design on cooling. net you have to set bios on pc to auto power on pc after power loss unplug pc do not power off by windows now disconnecgt the ribbon cable that connects to front power switch plug pc back in and it will auto boot.pc should have no more problems the little board in front is faulty and dell e510 all have this problem unfortunately you lose usb ports but you get system stable again.

Apr 14, 2009 | Dell Dimension E510 Dual Core 2.8 Ghz...

2 Answers

HELP OTHERS LG32LC7D FLAT PANEL TV


MOST LG PROBLEMS HAVE NOTHING TO DO WITH THE INVERTER BOARD AND THE INVERTER BOARD WILL NOT CAUSE THE PICTURE T FREEZE. THE 2 MOST COMMON PROBLEMS ARE THE POWER SUPPLY BOARD ( DEFECTIVE CAPACITORS) AND THE MAIN TOTAL ASSY. THE DESCRIBED PROBLEM ABOVE OF PUTTING A FAN ON THE UNIT IS A TEMPORARY FIX. REPLACE THE MAIN TOTAL ASSY.

Sep 29, 2008 | LG 32LC7D Television

4 Answers

LG 32LC2R screen goes black after 2 sec.


My LG 32lc7d 32 inch TV is 9 months old (December 2007 to September 2008) and now the screen goes black with sound and the channels will change I can hear them. Also when the TV is fine if I touch the remote it freezes the picture, so turn it off and on witch does not respond to the remote for five seconds, turn it on again & it works for 2 to 3 hours then same problem. LG claim its a software problem, well I got link to the firmware update down load to my memory stick and stuck it in the usb port on the back of the TV, software update fine no problem, TV reset all my preference are lost no problem I can set it how I like it ,but now worst things are happening the screen goes black after 15 to 20 minutes and no sound now ,so the firmware did not work but cased more problems and less viewing time .NNNOOO more LG product for me in life again .
I bought the TV for $1000 us and the DVD up converting player for $110 + sound system
So I could 1 remote to make life easer for me, but life is better for LG now since they have my money and all I have are their problems.
We should come together and attack LG about this problem or boycott them and their products for good, hundreds of thousands of people have this problem and nothing.
What’s the sense of a warranty if there no fix for your problems and you can’t get your money back. I have bought so many LG products and now no fix. There are millions of people who don’t have a $1000 us in there bank account..
I now feel like I was held at gun point and robbed by millionaire.

Dec 11, 2007 | LG 32LC7D Television

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