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Blue light is on but when I press on button the screen remains black and tv does not come on

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I have had the same problem with my HDTV. Its a Sanyo 42" Plasma TV. Well at first it use to turn black from time to time and then it got more frequent. Well I also noticed that it did that more often during the summer when it gets warmer. Well the way i solved this was to add a fan behind my TV. Something that pushes the warm air out and lets in cooler air would help i think. I think that can work.

Posted on Oct 02, 2008

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6ya6ya
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Posted on Jan 02, 2017

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1 Answer

Lcdx37whd88


Sounds like your power supply capacitors have failed. Google for Z1234TV and see if you can locate a power supply capacitor repair kit for your model.

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My hp hpid5220 screen is black. i press the power button and the blue light blinks slow fast then turns off what is wrong with my tv?


Hello ma'am, you HP has power supply problems. this requires replacement of the board. If you have no idea, call for service.

Sep 11, 2010 | HP Televison & Video

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Samsung projection 42 in. floor model, powers on


tv is in shutdown, drawing to much current. usually focus or high voltage divider (sometimes they are one). not usually the power supply.

Jul 05, 2009 | Samsung Televison & Video

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Sony KF50WE610 Vertical Blue Lines Across Screen


the vertical blue lines indicate some interference from other electronic gadgets near your tv. it started showing up on my sony grand wega when i installed my wireless modem. i almost ordered a new rear projection lamp costing over $100 but decided to experiment. i first moved my desk computer farther away from the tv then isolated the wireless modem router by placing it inside a small glass - the vertical blue lines became lighter in color so i dedided to find another small glass that fit inside the first glass container then put the router in the double glass - no more blue lines and my wireless modem router still works.
do some deductive thinking to figure out what's messing up your tv and isolate the interference.
good luck!

Jan 18, 2009 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Further assistance needed


I just replied you and here once again...

Please pull front speaker grill and find focus block, fixed at corner having 6 control knobs on it.
Find Blue Screen control knob there.
Put your TV in AV mode to get dark screen and just press Display button on remote to have AV display.
Now slightly rotate control knobs counter clock wise until thin lines (retrace) disappear. Job is done and put back speaker grill, press display button again to disappear screen display.

Dec 13, 2008 | Sony KP-51WS500 51" Rear Projection...

2 Answers

Samsung LNT4665FX 46in flat screen LCD power supply cycles on/off, with audible que. Blue light at bottom of screen remains lit, but screen remains black. Does not respond to manual on/off or remote...


Check out the fixYa solution for the Samsung LNS4051D- it sounds like the same problem. Defective capacitors. You may need different part though.  We just fixed my mom's LNS4051D with that problem. I have the LNT4665 and although it hasn't failed yet, I am tempted to get some capacitors just in case.

Nov 07, 2008 | Televison & Video

1 Answer

LC-32SB24U LCD HDTV... Brand new, just out of box. Turn on, goes to language menu for about 1 second max,too fast to adjust, then screen goes black and little green led power light starts to blink. And...


Good Day, texxastam;

Do this:

1. UNPLUG TV
2. HOLD IN VOLUME DOWN &INPUT buttons on TV
3. Plug in the TV. (the TV will turn itself on).
4. A blue "K" should now be showing on the TV screen, release the buttons.
5. Press and release the VOLUME DOWN & CHANNEL DOWN buttons simultaneously on the TV. (A blue service menu will appear on the screen).
6. Using the remote, press the DOWN SELECT button once. (The highlighted line should read INDUSTRY INT (+CAUSE) OFF
7. Using the remote, press VOLUME UP once (OFF changes to ON).
8. Press ENTER. After a few seconds the screen turns green and shows - Industry INIT success - at the top of the screen.
9. Unplug the AC cord for 10 seconds then plug back in.

Good Luck, big IRISH.

PS; I did not make this up... it's from SHARP> again good luck...you may have to do this several times....too...get the timming down.

Aug 07, 2008 | Sharp Televison & Video

1 Answer

Blue screen and shut off by self


You will need to reset the Netcommand and tuner settings in the set. The little indented button in the front of the set needs to be pushed in (when the set is off). The front light will blink for about a minute or minute and a half. Then, reprogram the Netcommand settings. This should solve your problem. If you need more information, then, reply to this post and I will respond.

Sep 23, 2007 | Mitsubishi WD-62525 62" Rear Projection...

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