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Missing -15voltsdc at power supply

Will turn on

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Bad regulator..

Posted on Sep 20, 2014

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Posted on Jan 02, 2017

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1 Answer

Got 40 in apex lcd flat screen tv and looks like its missing the power supply board anyone help me


some models have a external transformer like power supply. Cable plugs in wall socket goes to power supply transformer, cable from transformer connects to TV with a male female probe type fitting. It appears the power supply is missing.

Mar 04, 2016 | Televison & Video

1 Answer

Hi, I have Plasma TV Power Supply Board. The model of board is: LJ44-00144A PS-506-PH. The stand-by voltage 5Vstb works just fine. When I turn on the TV the Stand-by let in front of it comes blue like...


I have the same problem. As I see, here is dead sub PCB with microcontroller on board. Small PCB with 26 pins, mounted verticaly on main, big power supply board. It is not available as a spare part. You must buy complete power supply board LJ44-001444A, as I have done.

Aug 09, 2011 | Philips POWER SUPPLY (41644158) Power...

1 Answer

When we try to turn on the tv (toshiba model 32A43) it makes the sound of turning on then off and the screen stays black and a red light by the power button keeps binking


You're either losing high voltage or power supply is not producing the horizontal drive signal, Check for 130v on the collector of the horizontal output transistor, if you're missing your voltage, you have a power supply problem. If voltage is too high you have something open in the power supply such as a low value resistor. If its low, something is shorted in power supply, possibly voltage regulator ic.

Jul 31, 2011 | Toshiba 32A43 32" TV

1 Answer

Philips 32" tv will not turn on flashing three


hi,
You have to check the power supply of you tv for any voltage missing. also check the back light inverter board for any short circuit in it. Inverter transformers in the back light controlling board can become faulty.Three blink indicate the power supply have some problem. First of all replace all the electrolytic capacitors in the power supply board. If filter capacitors in the power supply is bad then this problem can occur.
ok

Jun 09, 2011 | Philips 32PFL5403D/27 32 in. LCD TV

1 Answer

Our Samsung HPN5039x Plasma TV isn't turning on: when we press the power button, the red power light flashes then turns off. What do we do?


Hello, It sounds like you have a defective power supply. Typically, +5 volt stby is present if the TV switches on with front indicator light. On the power supply, connector 802 pin 4 is the on command from the pcb main to switch the p.supply on. If this signal is present but still no VS,VA,VE panel voltages are missing, the p. supply is bad. Good luck!

Bill W.
integrityhomeworx.com

Dec 24, 2010 | Samsung HPN5039 50 in. Plasma HDTV

2 Answers

The t.v powers on for just a second and clicks off. I can hear a click from the back and it recycles off/on over and over.


open the set remove all but the ac cord connectors from the power supply; label them first! turn on the tv if the power supply does not recycle turn off the set and, connect and, disconnect each cable one at a time going to the power supply turning the set on and, off each time as you test until the power supply cycles (fails) again then repair or, replace the circuit board that causes the power supply to fail. if the power supply cycles on and, off (fails) with all connectors but, the ac cord disconnected repair or, replace the power supply.

Jul 19, 2010 | LG 42PC3D 42 in. Plasma Television

2 Answers

AOpen AX4BS motherboard front panel connections & power on.


That model motherboard does not support on/off control of the power supply. Refer to the output diagram on the power supply, and there should be pins in the connector (not used on your board) that may refer to the on/off control. Those pins should be tied together. Then the PC will turn on via the main power switch, and will require a manual turn off when the display says its ok.

Oct 24, 2009 | Acer AOpen AX4BS-V (91.89J11.001)...

1 Answer

Missing Power supply and remote


Hi! i hope this would help, most power supply for 20 inches lcd are rated 12volts dc at least 5ampere. try replacing your power supply.

Aug 28, 2009 | Polaroid FLM-2011 Television

1 Answer

Missing -5VDC and -12VDC


Could be.Some do some don't.Some have a circuit breaker. Take the cover off and check. Be careful though as some parts in the power supply can hold a pretty significant charge for quite a while even after the power supply is turned off.If there is no fuse or if you change the fuse and it blows again I would say a new power supply is in order. Good luck.

Dec 14, 2008 | Aspire (ATX-AS500W) (atx-as500w 12v) Power...

1 Answer

Scanner doesn't turn on


Hello Loverboy,
the scanner turns on automatically as he he receives power from the host interface.
Please check the cables and connection. For RS232 interface would you need an external power supply. USB can power the scanner without external power supply. By Keyboard Wedge installation please connnect also the Keyboard.

Nov 09, 2008 | Symbol LS2208 Handheld

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