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Re: WHY DOESN'T IT TURN ON, SHOWING FLASHING RED LIGHT,...
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
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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.
That problem is usually cause of faulty capacitors on the power supply board..
Just follow this instruction to fix your TV..
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
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 lightcontrolling 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
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.
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.
They range from different sizes and color. Swollen, deformed, and raised top is the thing to look for.
Solder in a new capacitor on the board or replace the whole circuit board.
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
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.
This is a generic symptom that could happen to any LCD
The following is a generic answer applicable to most.
The most possible causes are bad capacitors or a bad
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