Question about Panasonic PTL-520U 2000 ANSI lumens/SVGA LCD Projector (PTL-520U, PTL520U) Multimedia Projector

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T5AH250V You have a post mentioning that you replaced the fuse T5AH250V for your projector - where did you buy the fuse, as I am unable to find it anywhere. Thanks, Sumeet

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Hi there

You can buy it from your nearest TV or AV Repair shop.

Posted on Apr 03, 2008

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Help my panosonic PTL-520U has a good picture but the color is blue what could be wrong email me please

Posted on Nov 29, 2009

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Blue tint projector

Hi Bear,

This is likely an issue with the polarizing plates, which need to be calibrated or replaced. This is not something that can be done by the average user. If your problem persists, please send us a message: Projector Repair Bulb Replacement

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250V T6.3AH Slow Blo Fuse

Depending upon the way in which the lamp finally smoked, it is not unusual for the feeder fuse to blow. Replace the fuse and try the projector. As long as you haev a new lamp, it should work OK.


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DP2000x - no power

it might be dried out, and you cannot tell from looking at it. but there are transistors on there that go bad.

May 13, 2008 | ASK Proxima Proxima DP2000X Multimedia...

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Hello, I just wanted to drop a line to thank the AVS members who posted this thread and add my 2 cents. I too was victim to the sorry about your luck attitude of infocus when my projector suddenly stoped working. I did exactly as many of you have done and tore apart the unit (after my 3 different calls to IF). I found the 1A fuse blown after only 400 hours of total use. So no biggie. replaced it with a 1.5A fuse, and a fuse holder. Well, after about 3 hours... Dead again. So I read online that most failures are in the inverted position. (ceiling mount). I figure as many have heat must be the enemy. I removed the side infocus covers and carefully cut out the black plastic end panels. my temp gun reads 20 deg f less out put temp and the air flow is much stronger. Take 3...invite family and friends over, mid movie and zap. Nothing. So I replace the fuse with a 2.0A slow blow. This last a little longer. I get about 5 hours and zap again. So i figure i will just have to keep replacing the fuse on my 800 dollar paper weight. But the plot thickens... While upgrading my surround with a new hdmi switching receiver (onkyo 805) I discover I have a serious buzzing problem. The problem disappears when I unplug the hdmi to the projector. Having a background in pro audio I know that i have a ground loop issue. So i have 2 options. remove the sheild drain from the hdmi cable or remover the ground lug on the infocus. So I remove the ground lug terminal on the power wire of the projector and woohoo. no more buzz. And believe me I was very happy to have a low noise floor again. But I also solved the fuse popping issue as well by complete accident. As after I removed the ground lug I have never blow another fuse and now have close to 1200 hours on the projector. It also fixed some odd problems that I was having with coloration of the the lower right corner of the screen and a light flickering problem I was having. And FYI all my audio and video equipment runs through a monster power rack mount conditioner so I am fairly confident that the problems I was having weren't caused by "dirty power". during testing for the buzz I even removed the conditioner temporally to make sure it wasn't bad with no change. So I hope this helps someone out there in the same boat. Good luck! -Bill user_offline.gif

May 05, 2008 | InFocus IN72 Multimedia Projector

2 Answers

Epson 7300

Hi there

The Epson Powerlite 7300's lamp has got a chip on the side of the lamp's bracket that resets the lamp timer automatically when a new lamp is inserted. And it only does it once - first time the unit is switched on after replacing with a new lamp.

The fuse on this chip blows and causes the lamp timer to be reset. Unfortunatelly this is the only way to reset the lamp timer on this model. There is no manual way.

So to cutt to the chase , you will have to buy the original lamp and replace it before it will reset.

Part Number is : ELPLP05

Apr 17, 2008 | Office Equipment & Supplies

1 Answer

Power problem

Hello BobSmalley,
From your post, I gather that you know your way around electronics. So, why don't you use a VOM (Volt Ohm Meter) to trace power starting at the PS and see where you lose it. You may find a blown fuse along the way as you didn't mention fuse status (and that projector surely has one). If you do have access to a meter you could also check the ballast to see if it's putting out enough voltage for the lamp. But since you stat that it doesn't power up at all, I would lean towards the Power Supply (PS) and locating the fuse (could be an AGC, etc... or a printed circuit fuse soldered in circuit right on the component side of the board near the edge where power comes in).
Keep us posted, and Good Luck.

Mar 10, 2008 | Optoma EP716 Multimedia Projector

2 Answers

Faulty projector

You will have to give a Make and Model of your Projector.

Could either be your lamp that needs replacement or a faulty Ballast ( lamp's powersupply )

Nov 09, 2007 | Toshiba TDP-T45U DLP Projector

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