Question about Emerson LC501EM3 50" 1080p 60Hz Class LCD HDTV

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WHY DOESN'T IT TURN ON, SHOWING FLASHING RED LIGHT, CHECKED FOR BAD CAPACITOR'S AND I DIDN'T FIND ANY THAT WERE BAD.

I LOOKED OVER THE CIRCUIT BOARDS AND I DID NOT FIND ANY DAMAGES OR FRIED SOILDERINGS

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If you look on the manufactures web site they often have codes for what the flashing red light may mean. I have a DLP and had blinking lights for a burned out bulb. Although this may not be the case for an LED

Posted on Nov 12, 2014

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Posted on Jan 02, 2017

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Sony Bravia KDL-xbr4 Replaced TCON board All worked great for a week Had an issue w/ HDMI cable at the box fixed it and now tv comes and the goes off to 6 blinking red lights


6 red flashes- backlight issue, bad main board, or power board or inverter boards- check standby volts on power board. "backlight on" volts should be 3-5v from main logic board then 24v to inverter


Have this from a youtube link find BUT
Better is to look first also on bad leaking or bulged capacitors thats better to replace in the bad components to get a repair because active components died on bad capacitors but after a while because on the build-in protection circuit by faults like deformed or leaking capacitors and even several fuse resistors then after replace a complete board again after a while you will may be get the same kind of problems again, take If you find some or much bad capacitors replacements 10 volts dc higher . begin with control on the power supply first of all.



Sony Bravia TV kdl red blinking led light error codes solutions Sony KDL 40XBR4 KDL 40XBR5 KDL 46XBR4 KDL 46XBR5 Service Manual

Jan 05, 2017 | Sony Televison & Video

Tip

How To Repair LCD Monitor


The most common problems on Samsung LCD monitor/TV:
  • The power can not turn on, the red light flashing
  • the monitor on for a while and then turn off, then the red light flashing.
This is due to the weakening of the capacitor in the power supply module.
let's go hunting for bad capacitor.


I will explain how to:

  • Open the case of the LCD
basically in all LCD monitors have two circuit boards (power supply board and system board)
  • After you open you will see the two boards are
  • You see a board that has a socket for the power source. wrote that the board we're looking for (power supply board)
  • Remove all cables connected to the board and take out the board. (get noted before you unplug it)
  • Now you see it components on board, we looking for capacitor.(see picture below)
8644481.jpg
  • Looking for damaged capacitors, physically you will see a capacitor on the top like a bloated (see picture below)
a1611e3.jpg
  • Replace the damaged capacitor with the same value that you can see on the surface of the capacitor. (In this step you need any soldering tool)
My advice: replace capacitors with higher voltage, like 10V replace with 16V or 25V will be fine.

Have a Nice Repair :)

on Feb 12, 2010 | Computers & Internet

1 Answer

I have a GOODMANS LD3261HDFVT TV. It has been perfect up until now. Problem is that when i switch on I usually get a flashing red light instead of a solid red standby light. Sometimes if I get the solid...


Good day!!!!


Commonly that trouble is cause of faulty capacitors on power supply board...

Please follow this step on how to fix that problem on your own..

  1. Open the back cover of your TV.
  2. Look at the power supply board..Its normally connected to the power cord..
  3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
  4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
  5. Some of the capacitors not bulged so its better if have a capacitance meter..

I hope this solution will be helpful...

Thanks for using fixya...

This is the sample image of bulged capacitors
12_10_2011_10_35_44_am.png

Dec 10, 2011 | Televison & Video

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

Rca 52" 3 light flash not turning on


Check circuit board for bulging at the top capacitors. The board you are looking for is the one with the flyback transformer. This transformer is the one with a thick red wire going to the top of it. Replace all bulging capacitors. Capacitors are the ones that look like little cans. While you are there resolder the bottom solder points on the flyback transformer. This should work, because it worked for me.

Aug 23, 2010 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

Following a audible pop TH 50PZ85U will not power on.


Most common thing to happen is a capacitor went bad on one of the circuit boards making the loud POP sound. Odds are it's on the Power Supply Board if the TV isn't showing power at all. The picture below what a bad capacitor looks like.

f14804d.jpg

They range from different sizes and color. Swollen, deformed, and raised top is the thing to look for.
135a668.jpg


Solder in a new capacitor on the board or replace the whole circuit board.

Jan 30, 2010 | Panasonic Viera TH-50PZ85U Plasma TV

1 Answer

I just replaced the lamp on my sony wega 42WE655 tv and the lamp replacement indicator light onthe front no longer indicates that it is bad, but the standby light keeps flashing red. when i try to turn it...


If you just replaced the lamp then there's something wrong in the power circuit or you have a bad lamp. If you can I would take the back cover off and look at the board where the power cord connects and lok around it for swollen capacitors. Let me know if you find anything.

Oct 16, 2009 | Sony Grand WEGA KDF-42WE655 42" Rear...

2 Answers

My 42pf7421d/37 flashes a red light when i turn


Hi, philips (sony and others) uses the flashing red lights to give an error code, but all that means is that a circuit is probably shorted and doesn't always indicate specific components,.
42pf7421 is an LCD that basically has two large circuit boards in it. If you have technical ability you can examine the power supply to see if any capacitors are swollen on their top sections. this is a common failure in many LCDs and Plasmas, but would require soldering to replace them. If no caps look swollen troubleshooting this set would involve voltage checks , a service manual and board replacement.
Could be either the main board, power supply or possibly a bad screen (panel) If you have the set open you can sometimes see the LCD bulbs light for a split second indicating that a problem with either the panel itself or the ballast power section. If it lights for a second sometimes I can see that one bulb is not lighting. One bad bulb will cause the set to go into shutdown mode , indicating a bad screen (panel) .
I hope this info helps you decide on the options before you
1. call a tech expect to pay an estimate fee, parts and labor btwn $200-$1000
2.check the power supply, reseat the panel cable, look for a momentary light of the screen. order a suspected part and replace it yourself.
3. buy a new TV (sry bad option)
hope this helps
Eric

Sep 01, 2009 | Philips 42PF7421D 32 in. LCD HDTV

2 Answers

Power on


The power board has parts going out on it. A slow decline in performance usually points to a bad capacitor or power transistor. Take a look at the power board. The board will show extreme overheating evidence if you had a meltdown. If it looks clean, maybe it is just a bad capacitor. If you see a capacitor that looks like the top is bulging out, that is a sign of a bad part. Unless you like to solder, consider this tv done for.

Nov 14, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Veiwsonic 924x


This is a generic symptom that could happen to any LCD monitor.
The following is a generic answer applicable to most.

The most possible causes are bad capacitors or a bad semi-conductor.

Open the unit and check to see if any of the capacitors in the power supply or other boards look domed or vented on the top.

Replace any capacitors accordingly. Use the same value capacitors. Most often, 1000uF 16V or 25V, 470uF at 16 or 25V, 220uF at 16V or 25V.

If this doesn’t solve the problem, try checking the surface-mount transistors on the inverter board that run the lights. Some times these transistors go bad and can cause the power to cycle up and down. Check the area for any cracked or overheated ceramic or mylar capacitors.

Don’t forget to check for caps on the main board. Some times these boards are overly simple and only have a couple of caps, but other times they are teaming with them.

Dec 27, 2007 | ViewSonic VX924 19" LCD Monitor

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