Question about Panasonic PT L720E Multimedia Projector
HI, sorry to bother you and I dont usually do this. I am only doing this as you are the only people i can find that have the manual.
My projector is stuck in standby mode. It doesn't even turn on just goes straight to standby. I dont have a remote and understand that this model is discontinued. Is there a way to get it to turn on without paying $.
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Posted on Jan 02, 2017
SOURCE: Panasonic Viera 42" TH-42PV30
Check the 2 main interconnection cables (24pin and 26pin) rear of PDP and Tuner box. Make sure they are firmly connected. (Loose connection of 24pin will cause no power on symptom.)
Posted on Oct 21, 2005
SOURCE: Panasonic PT L501U Projector
Have you replaced the lamp ?
If you haven't - take out the lamp and chech for any irregularity on it - i.e. - discolouration , vein like looking marks ( black or white ) and also if the shape of the shaft is off.
If there is no visible damage it might be a faulty Ballast ( lamp's powersupply ) - especially if you cannot get it out of stanby once it has shut down.
Posted on Apr 17, 2008
Here are a couple links that give definition to the problems. Hope it helps.
Posted on Sep 13, 2008
SOURCE: Panasonic PT-AX100U-EC
I just repaired mine with some oil for the iris assembly.
The problem is the iris is either slow to respond or doesn't respond to it's controller. The cam should snap back to it's resting point and move freely. It needs to be re-oiled. Mine would move but sluggishly like it was sticky. There are TWO pivot shafts to oil. One on top and one on the bottom. The bottom one can be accessed by removing the bulb. You can see the bottom cam while the bulb is installed. This is a good point to test the iris movement at.
You need to have some mechanical ability. If you don't think you can do this then don't.
First remove the bottom bulb cover. Now get a flashlight. Look in the area that bulb is pointing towards. In the left corner of the side towards the front of the unit where the lens is, you will see a brownish cam. It has a spring around it.
Take a small screwdriver and move it to it's extent like a wheel. Let go and it should quickly return to where it was. It virtually snaps back to it's resting point. Do this several times. 5-6 If at any time it returns sluggishly then it needs to be oiled. 3 in 1 oil works great.
This takes time. I used a small jewelers screw driver to deliver the oil. As you oil it move the cam back and forth to work the oil to the shaft. Standing the unit on edge after you put the oil in the gap helps the oil get to the shaft.
If it now starts to snap back put the bulb cover back on and try the unit. If after 5-6 movements it still does not snap back each time then the actual motor shaft needs to be oiled as well.
Take the top off. There are several screws and one on the back. All have an arrow marking them. The cover is caught around the lens assembly. You have to be a little bit violent to get it off. After the cover is removed, you have to really look for the upper iris cam. It is under the large multi pin connector with brown wires on the main main display board. There is a small perforated metal cover under this connector.
After bending the cover up you will see the linear motor that drives the iris. There is a small flex cable going to it. You need to oil it's shaft. Use the same procedure to oil it as the cam under the unit. After oiling this shaft the iris should now snap back to rest every time. That's it.
Posted on Jan 04, 2009
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