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My LG 47le5400 makes a long beeping sound on startup then the LG logo on the bottom lights up and the power button stays lit but no picture or sound. Is this a power board or main board issue?

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  • LG Master
  • 74,482 Answers

It is a main board issue. Damaged IC. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magzine" will make surf easy Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Posted on Apr 18, 2014

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: JVC HD-527575 problem

We just had the same problem. The Projector lamp is burned out. You can get the lamp at Electrified.com. Their phone # is 800-678-8585

Posted on Oct 22, 2008

talknerdy2me
  • 2 Answers

SOURCE: samsung hc-r5245w no power

Hello Chac c,

The reason that you are getting a 'red light' is because your lamp is burned out. There is a panel on the back of the TV that gives you access to this lamp. You can remove it and check the part# to be sure then replace it. I did a quick search for you just based on the model# which you provided. You can see it here - http://www.nextag.com/serv/main/buyer/OutPDir.jsp?search=samsung+lamp&gg_site=&gg_aid=1295966762

Hope this helps :)

Posted on Mar 17, 2008

MikeNJ1964
  • 398 Answers

SOURCE: wont power up

I have seen that symptom many times. Most likely, the little blue capacitor next to the horizontal output transistor has shorted and popped the main B+ fuse. This is very common in those Hitachi projection sets. These parts should be replaced by a tech familiar with Hitachi projection sets.

Posted on Aug 14, 2007

  • 1 Answer

SOURCE: jvc tv

when both the blue light and red light are blinking it means 1 of 3 things. 1. lamp replacement. This often works everytime for the repair. TIP!!! DO NOT USE ANY OTHER LAMPS OTHER THAN JVC AUTHENTIC LAMPS. ANY OTHERS AND YOU RISK DAMAGING YOUR TV FURTHER. 2. the fans are not working properly or need to be replaced. They need to be cleaned every so often and they will stop working from burn-out if not done so. This repair will cost you less than 100 dollars. 3. The ballasts are defective and need to be replaced. The ballasts themselves run about 150 dollars. I tell you I have fixed this TV more times than I care to count, not to mention the number of lamps I have gone through. The guy at the TV repair place now knows me by name when i come to buy lamps. :(

Posted on Dec 07, 2008

electronick
  • 505 Answers

SOURCE: I have a model HD52W59

A lot of these have bad capacitors in the power board. You can see them look puffy or bulged if you disassemble and look. look for caps that look like this

e3d18c4.jpg

If they are bad, you just need to replace with similar value caps and the issue should be solved. They should be flat on top, not bulged like the picture. If you have a convergence issue too, this can also be fixed on the same board, let me know if you get to soldering..

you will need a set of TORX bits to open up, make sure you pull the ac power first. Look @ the left side when you get inside for the bad caps, you may need to use a mirror to see back behind the U shaped heat sink (there is a big one behind there that goes bad)..
best of luck, keep in touch

Posted on Aug 16, 2010

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If you get power to the controls and you don’t have the startup sound or see the gateway logo when you plug it in, the main board may be bad.
If your picture was pinkish or dark at the top or bottom when it was working then you may have 1 or more of the bulbs failing.
If you have the startup sound and see the gateway logo and the screen just flashes and the power buttons stay lit, then it sounds like probably the inverter may have went.

Take the screws out of the bottom rear edge (these hold the front trim), and the 4 big black ones at the middle of the back that hold the stand bracket.
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Then unsnap the top edge (rocking it while lifting helps)
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Once trim is off, remove the 4 corner screws that hold the screen in. Then the screen will lift out with all the guts. You may have to pry up on a corner with a screw driver to get it started.
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Shout if you need more info.
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