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Lf501em5f 50in emerson tv first the tv stop turning on showing no signs of power but a faint beeping I could barely hear and no red light

I ordered a power supply board and it had a louder beeping when plugged up and still no red light. returned it and the man said sounds like the main board.I got another main board don't hear no beep no red light and tv doesn't come on.What's the problem?

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 85 Answers

SOURCE: tv will not turn on but makes a beeping sound

Sounds like a capacitor in one of the power supplies exploded either in your high voltage horizontal power supply or the main power supply. If you don't mind taking off the back cover you actually might be able to find this capacitor it will have a huge hole in it.

Capacitors tend to dry out after about 5-6 years and can explode just like yours has.

Posted on Dec 04, 2007

  • 3 Answers

SOURCE: Pioneer PDP 5030 power supply problem

Ok here's how I manage solve the problem... Having the back removed opens the contacts on the interlock switch so I guess if it powers up in this state it senses the high voltages are exposed and for safety shuts down... After this the unit will not power up and the power led flashes red continuously as described before…
After some thought it occurred to me that there may not be a problem at all, just be a simple reset function for this condition… I managed to find an easy solution to this… Just call up the hidden engineer’s service menu – On 3rd generation Pioneer Plasmas it’s as follows > Power down the screen > Hold down the “Input” and “Vol +” buttons on the front > Power the screen up and the Service menu comes up on the screen > You don't need to change anything just simply power off and from then the screen should operate as normal…It did for me so I’m well happy now!!
I hope this information will help someone else one day – Good Luck!!…Rob UK…

Posted on Jan 04, 2008


HP P4B-MX is Award Bios

Award and Phoenix BIOS:

1 short beep: Normal
2 short beeps: CMOS error
1 long and 1 short beep: DRAM error
1 long and 2 short beeps: Video card error
1 long and 3 short beeps: Keyboard error, or video card error
1 long and 9 short beeps: ROM error
Long continuous beeps: DRAM not installed correctly, bad memory, or incompatable
Short continuous beeps: Bad power supply

Posted on Jan 19, 2009

  • 1 Answer

SOURCE: Power supply problems

Have ordered a new power supply PCB as too many parts need replacement. Best to buy the whole lot.
Ventilation seems to be an issue with this unit, I am thinking of installing a small fan at the back to cool the voltage regulator and main transformer.

Posted on Jul 07, 2009

Seth Wolf
  • 12 Answers

SOURCE: when i power on ps3: light goes green to blue to red (3 beeps)?

This is the yellow light of death i got it some time ago and had to buy a new ps3 there is a way to fix it but i costs more than a new ps3 i had to buy a new one so your screw lol.

Posted on Dec 06, 2009

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Where do i order ps board for my emerson tv model# LF501EM5F PARTS

The board can be ordered from eBay or but you will need to remove the back from the set to see what board it has in it, they used 4 different boards in that set according to the service manual.

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I own an emerson lf501em5f 50 inch tv believe the main board to be bad

according to what you tell me . already tried a new power supply . , then the problem is is the main board.

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Resolution mismatch when i hook up my ps3 to it.

hook the appropriate inputs (red white and yellow) on the side of the video input on the emerson tv. Power up tv and be sure it is on the video input screen. Be sure your PS3 is plugged in as necessary, PS3 is in the off position. Turn PS3 on and hold the power button on for 7 seconds until you hear the PS3 beep at you twice (wait for 2nd beep) at that point the PS3 should boot up on your tv monitor - you are resetting the resolution by holding the button down

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