Philips 27PT543S 27" TV Logo

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James Cline Posted on Feb 11, 2007
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Tv will not power up

My tv will not power up now, it used to take several attemps to get the picture to come on, would have sound no picture. Now it will not power up at all

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Bill Heronemus

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  • Expert 308 Answers
  • Posted on Feb 11, 2007
Bill Heronemus
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Joined: Nov 25, 2006
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Sounds like a fuse or fuseable resistor may be open due to a short in the high voltage circuits. I would first check the Horizontal output transistor Q7460 and if that was shorted, I would replace C2455 (47uf/50v) as well to prevent a reoccurance of the problem. Of course with the prices of 27" TV's falling, it may be un-economical to repair.

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1answer

Standbye light goes out after several attemps

Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
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Problems starting!After several attemps it starts for a second then ded again after several more attemps it starts and then runs OK! Whats the problem?

Hi Conny:
I'd start by looking at the fuel delivery system.
Injectors or carb?
Sounds like it's not getting gas.
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LCD Samsung tv no picture no sound

Try to unplug set and a box if used from power for several minutes and then power back to see if a reboot will help or not.
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MY TV DOES NOT SWITCH ON TILL AFTER ABOUT 5 MINS AFTER SEVERAL ATTEMPS ON OFF

Kindly do not keep trying like this, as you might damage other components/boards inside. First of all, ensure there are no loose contacts in power outlet, RC jack, cable and connectors. If problem persists, I suggest it is better to refer it to a qualified service
technician, since the back cover has to be opened for investigation/rectification.
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It sounds lamp is weak in TV and requires replacement.
I would be in better position to help you out if you post model and brand of your TV.
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Ur power board ic converter is dead.
Need a new one.
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No picture or sound

You need a professional.
Stop using the TV until it is repaired.
Call the manufacturer to find you nearest authorized service center.

MR. TV Sales & Service Inc
Milwaukee Wisconsin 53405
(414) 762-8600
Established 1974
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TV is not coming on

If I understand your problem correctly, it sounds like the unit is not coming on... If this is correct, then replace the 3 capacitors on the output side of the power supply. There are 2@1000uF @25V and 1 smaller one which is 220uF@25V.
I think the part number on the board is marked as WX-15/19/20Power-01...
This worked on a 19 curtis LCDVD191
Hope this helps...
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your red crt bulb is starting to go bad. somtimes you can tap lightly on the neck of the red and the prob. usually short term will go away. if not tube replacement is necessary. this is sometime a pricey repair. but worth it! john
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