Question about Gateway GTW-P42M303 42 in. Plasma Television

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Plasma tv GTW-P42M102

After the tv is on for about 20 turns off,and i cant turn it back on.After it cools off i have to turn the main power switch off and on and then it powers back on.

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Re: plasma tv GTW-P42M102

I have one I bought about four years ago and am starting to have problems with a refurbished one they replaced after they could not get the original one to work after replacing two of the four parts they were supposed to replace. Any suggestions?

Posted on Apr 06, 2008

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Re: plasma tv GTW-P42M102

Sorry to tell you a common problem with these sets. It is a bad capacitor in the main power supply.. There are really about three of them that go bad from time to time to cause this problem... If your not a tech you should find an authorized repair facility as a non authorized is not going to know what to do to fix it and it will most likly cost you double to repair. Good luck and let us know how you got it fixed.

Posted on Oct 05, 2006

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1 Answer

Hard to turn the tv on

The main power supply regulator board should be checked. This is a very skilled work. It will be best to seek assistance by any experienced service technician.

Oct 30, 2012 | Gateway GTW-P42M303 42 in. Plasma...

1 Answer

Main board green light blinking at 5 flashing intervals

researched your problem a little, it sounds like a burnt out board. It doesn't look too good for parts either. google your symptoms and you will see a few hits on your exact issue

Jan 29, 2010 | Gateway GTW-P42M303 42 in. Plasma...

1 Answer

Will not power up. Stays in standby mode.

these particular tvs are very sensitive to voltage changes spikes etc.first turn off main power switch wait at least 30 sec if standby come on wait another 30 then turn off main power again and unplug tv for 1 min then plug in turn on main switch wait 30 sec then turn on tv with remote resets system.then buy a ups and always wait at least 30 min after turning tv off to turn back on if not causes power failure and after each press of power button wait 30 seconds before trying again lmk good luck

Jan 08, 2010 | Hitachi 42HDS69 42 in. Plasma Television

1 Answer

I have a gateway 42" plasma television model # gtw-p42m102. When I turn on the main power in the back of the tv, it will turn on, go to a blue screen with an hourglass, then it will turn off and then...


Its not a power supply issue, but an issue related to the D-board on your TV. There would be swollen/bulged capacitors on this board. To check this you'll need to remove the back panel of the TV. Check the connections to and from the D-board. Make sure the lamp connections are fine and ballast is not burnt. Also check if all cooling fans are working.
Note-- Please make sure to turn off and unplug the TV for at least 1 hour (this will drain off current from all components especially capacitors) before you perform any repairs. Also note that the TV consists of very high voltages even when it is in OFF condition.

Please do accept the solution if the issue is resolved or else revert for further assistance.



Oct 28, 2009 | Gateway GTW-P42M303 42 in. Plasma...

2 Answers

It won't turn on, used to take 30 minutes of clicking the main power button and the power on button, now after 2 hours of pushing buttons it won't turn on. I have heard about the power supply problem, and...

Probably coused by bad elco's. You could repair this yourselve if you are able to use an oscilloscope. then just measure where there are spikes on top of the dc voltage. replace those capacitors with low types....

Jul 07, 2009 | Gateway GTW-P42M303 42 in. Plasma...

1 Answer

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..

Mar 24, 2009 | Gateway GTW-P42M303 42 in. Plasma...

1 Answer


I actually bought the 5 year warranty when we purchased this new and it was still under warranty. Gateway is sending us a brand new TV. No need for me to try to fix this, but thanks to all involved.

May 29, 2008 | Gateway GTW-P42M303 42 in. Plasma...

1 Answer

Gateway Plasma 42" TV

my 5 yr. old 50 inch plasma hd that i paid almost $7000 for started flashing for afew sec. when first turned on.progresivly got worse,flashed for about 30 min. then ok until turned off.after about a month power light comes on fans start then trips off. gateway phone 888 737 6949 wants $250 for power supply $330 for video?board $600 plus for other boards no guarantees.i fixed mine by spending $1000 for a new vizio 50 inch plasma hd.if anyone wants a free dead gateway email me,


Mar 02, 2008 | Gateway GTW-P42M303 42 in. Plasma...

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