Question about Gateway GTW-P42M303 42 in. Plasma Television

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No picture I have a plasma screen gateway television and all of a sudden the sound went off, so I turned the tv off and waited a minute and then turned it back on... NOw i hear little sound and its all black with a random pixle here and there flashing. What went bad and how can i get this fixed?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 2 Answers

SOURCE: Gateway GWT-P42M303 screen problem

the 15v is shorted to the ysus board and probably one of the two big heat sinks with the number 4921QP1002B is the cause. If you don't repair it can I have it for parts?

Posted on Apr 17, 2008

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  • 1 Answer

SOURCE: Slow start

(I'm copying a guest's comment above. What Gateway told him does seem to work - although in my case, the monitor was slow to start when plugged directly into the wall, and it was immediately fixed when I plugged it back into a heavy duty power bar.)

hey, I had the same problem. Gateway told me "Plug the monitor power plug directly into a wall electrical outlet
or a different wall outlet by removing any surge suppressors." I did that and it works. It might be a certain kind of power bar they do not like. It worked for me so try that and see if that helps.

Posted on Sep 17, 2008

  • 3 Answers

SOURCE: remove back panel on gateway plasma tv

jeff
I just took the back off my Gateway for a simular problem
I just took the screws out of the legs on the back of the set and all the screws around the edge then the support where the legs were attached and then the screws around the box with all the video jacks that pulls off. Hope this helps
brucep63

Posted on Mar 24, 2009

  • 2 Answers

SOURCE: plasma tv picture goes on and off but always has sound

I install a fan in the back, there is a only o9ne 5 v, 3,3 a that you can connect workin fine..

Posted on Apr 14, 2009

stonephoenix
  • 563 Answers

SOURCE: The screen on my Gateway Plasma 42 in TV went

I have over 10 years experience in electronic tech support.

I know this isn't what you want to hear, but the problem you've described can't be fixed with troubleshooting. Your TV will have to be repaired. There is a part that has developed a defect and needs to be replaced. The question will be, is the part still available? Before paying a TV repair person $75+ to diagnose the problem, ask yourself if you're willing to pay $250 minimum to fix this particular set. Also keep in mind that most TVs that old have a very limited number of replacement parts still available. Normally it will cost at least $75 to have the set looked at by a repair shop (diagnostics). If the part needed to complete the repair isn't available, you won't get that money back.

I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here.

Please let me know if I can be of further assistance.

Posted on Jun 18, 2009

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No picture, no sound


Diagnose the Problem

The first step in diagnosis is to check the display for any cracks on the screen. If the screen appears cracked, then the repairs may require plasma screen replacement. A cracked screen means that the gases inside have probably escaped. There is no way to refill the gases and the whole display will have to be changed. In this case, an authorized service may be able to provide more details. If the problem persists, then a gas leak is perhaps not the cause of a loss in display. Lamp burnout could be one reason behind a blank screen.

Check the Fuse

Most of the time, the plasma TV fuse is at fault for no picture on an LG Plasma screen. In such a case, changing the fuse should make an LG Plasma TV functional.
  1. Unplug the TV and wait for 10 minutes for the capacitors to discharge.
  2. Take a Digital Multimeter and set it to the 0-200 ohm range.
  3. Touch the red and black probes to each other and check the readings. The multimeter reading should be in the range of 0-2 ohms.
  4. Now touch the red and black probes to each end of the fuse. If the multi-meter reads '1' or 'OL', then the fuse has blown and needs replacement. If the multi-meter shows the same reading as before, the problem lies elsewhere. Some cases may require the motherboard to be completely replaced.

Fix the Problem

If an LG plasma TV has no picture and no sound, then either the Y-sustain or the Z-sustain are at fault. Follow these steps to determine and fix the problem.
  1. Unplug the TV and wait for 10 minutes for all the capacitors to discharge. Then open the back panel of the TV.
  2. Unplug the Z-sustain from the TV and plug the TV into the power supply. If there is sound, then the Z-sustain is faulty and will need changing.
  3. If there is no sound, follow the same procedure and unplug the Y-sustain. Check for sound. If there is a sound, then the Y-sustain is faulty.
  4. If the Y-sustain is faulty, a user may have to check the Y-buffer. He will have to follow the same procedure and unplug the Y-buffer this time. If there is some picture with sound, it means that the Y-buffer is faulty.
Keep in mind that a plasma TV runs on very high voltage. The voltage on some connectors exceeds 400V (in excess of 200 joules of energy). This high voltage can be very dangerous. That why it's important for users to always make sure the capacitors have discharged before performing any type of diagnosis or fixes on an LG Plasma or any other television set.

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