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Vizio VT470M no picture, no sound, no backlight. Power supply board looks good all voltages appear correct (24V, 5V, and 3.7V) and no "bulged" capacitors . When I unplug unit for two hours, the screen comes on normally backlight comes back up and picture is normal, but changing the channel causes it to go dead again. Bringing up menu with remote is really sluggish and when attempting factory reset, it goes black. Vizio light on the front of the TV comes on and off when pressing power button,
Im having similar problem and with my limited knowledge of lcd tvs and the voltages ALL being good except the pwr on or sw on voltage from the main board to the power supply which tells it to switch everything on Im guessing that something is going w ...
Vizio VT470M 47 in. TV
My samsung 46 inch LCD also has the problem of no picture, but clear sound. I read all the posts about capacitor problems, and have gone so far as to take the back off and the power supply cover to look at the capacitors. But they all look flat...I don't see any of the bulging noted in other posts. When I first power up the TV, it looks like it is lighting up, but after maybe 1/2 second of buzzing, the dim light goes off completely. Looking at it from the back with the cover off, you can see the
Samsung has had a lot of capacitor issues with some models, even if the capacitors look good they can still be open and need to be tested with special equipment to get to the root of the problem. They had so man ...
Samsung LN-T4665F 46 in. LCD Television
Hitachi 55PMA550 I have a Hitachi 55PMA550 monitor linked to a skybox. The Hitachi goes on into standby mode on power up, I then use remote to start the Hitachi, the standby light goes green (start mode) & picture comes on in 3-4 seconds mormally. But now after 1 second (without picture) Hitachi goes back into standby mode of red light. I can hear sky tv sound (Hitachi linked thru sky to sound) and checked all cable connections, they are ok. Any advice would be most appreciated, thanks.
Hitachi 55PMA550 55 in. HD-Ready Plasma Television
Have Protron PLTV-3250 TV and I was told the power supply board was bad. All indications concluded this was the problem. Replaced the power supply board (FSP194-3F01 power supply) and turned the TV on. It has power, but I have no picture. I can hear the sound from each channel, but that is it. I can change the different sources using the remote control and when I come back to TV, the picture (white fuzz or blue screen) will flash for a moment, then it goes black. If I select a source that
Spectroniq PLTV3250 32 in. LCD TV
I have anew Sony 40 inch EX 520 series Led warranty not valid in India since purchased in Bangkok. The power standby light goes of very often and the Tv goes dead. If I switch off the power supply for couple of minutes and switch it on again the stand by light comes back on and TV functions normally. The TV is also very sensitive to voltage fluctuations and on Inverter power supply. Please let me know what could be wrong and how to solve this problem.
Flat Panel Televisions
I have a Samsung lcd-led TV Mod UN32C4000PD Ver #CN02 that has 6 blinks when you turn it on. You can here the samsung sound when you push the power but no picture or sound. I put a high power light to the screen but no picture. Also I ck the power supply and i have all voltages.
This is a classic "Hic-upping" switchmode power supply problem. The protection circuitry inside the SMPSU, has sensed a severe potential problem, and is attempting the shutting of the set, down to avoid a fire, explosion, or both. This s ...
Flat Panel Televisions
DP46849 Sanyo. I have checked all of fixya for solutions. I hane no sound or screen but have a green light when turned on. It will flash as if it is in protect mode. I have checked voltage and there seems to be 5v, 12v and 15v as indicated on power supply. I cannot find a 24v to read from but I did pull the master inverter to see if I had sound. Still the green light flashes and no sound. I suspect power supply only because when it is turned off I hear a high pitched whistle that slowly goes on
Hi,Power supply board seems defective and causing problem. Please replace power supply board to solve tv issue, required board is available in ...
Flat Panel Televisions
I have an Akai PDP5016H television recently it will not power on , I have to push power button several times before it comes on , no picture and no sound , Occasional lly it will stay on with the AKAI logo blue screen and then the screen will change to gray or scramble gray.
On the upper right corner it it will say" AIR 8" and at the bottom right corner it will say " fill screen"
I looked at the power supply for any bad caps but did not see any visibly.
I even check the power supply board f
There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced, and in your ...
Samsung Flat Panel Televisions
Hello! I'm having the infamous black screen issue with my Viewsonic N3252W. I initially replaced the Power supply, because that looked like it was "the fix" for this particular issue. I powered it on, and I was getting the same problem. There was a faint picture (you need to look at the screen from a certain angle, with an appropriate amount of light shining on the screen.) with no back light! All of the voltages coming off the new PSU are right where they should be, including the 24VDC to the
You can do a simple test on the set.\012Turn the set on and place a bright flashlight against the screen. Look around the edge of the flashlight for a moving image. This will show you do not have a back light. If one of the transformers on t ...
ViewSonic N3252w 32 in. LCD Television
Samsung dlp hls4666wx TV. After a power surge, my TV shuts off after about 4 minutes. The stand by, TV, timer lights flash...manual says it's the bulb or fan. Only, I bought a new bulb, and noticed both fans are working. Still does it. It makes a small pop them hiss or buzz sound when it offers the bulb down. The power supply and ballast look ok (circuit boards). Perfect picture and sound before shutting down. I've heard there are 3 fans but only see two. Could it be another fan I don't see? Or
Intermittent picture when you turn tv on the picture and power light comes on for 15 seconds and then goes off and standby light comes on for about 15 seconds then the picture pops on again and repeats . there is also no sound
Sony KDL-40XBR4 40 in. LCD HDTV
55HDS52 no picture no sound. no startup voltage on vsago and vcego connector
on connector CN68 power supply and logic board was replaced and
still no voltage. what create the 3.15 voltage on pin 2 and 3 for cn68
Hitachi Flat Panel Televisions
TV has sound but no picture for about 20 minutes then the picture pops on and is good. The capacitors are all good looking. I was told it was the control board or the power supply? Is the board that has all the caps on it?
The capacitors all looking good on which board? You need to find out when you do not have picture, are you still geting the backlights on, this is important to narrow down the problem. Please read my guides to understand what it takes for the LCD fla ...
Samsung LN26A330J LCD TV
ILO p42bskh-us2 has standby power, powers on, but no sound or picture. there are two green leds on the mainboard. after about 1.5 seconds relay8001 on the mainboard visibly sparks, the relay(s?) click off, and led8001 turns from green to red. i've located the voltage values that should be tested for, but i'm not sure where to test as i can't locate ANY information on these sets. it has the samsung 42sd v3.1 common to norcent, tatung, and many other noname plasma panels. mainboard is samsung
Tatung P42BSKH Television
Hitachi 55HDT52 tv has no picture or sound. I have replaced power supply board, x sustain board, both didital boards, logic board, and incoming power filter board. Snot chips look good. I have green flashing LED in front of tv.
Hitachi 55HDT52 Plasma Television
Changed a 3300mf 100 volt capacitor in power supply was blown when i plug tv in red light standby light comes on then i hold in power button blue light on light comes on it doesnt flash but no picture or sound at all
Apparently not all of the power supply problems have been fixed ...
Philips 50PFP5332D 50 in. Plasma Television
LG 32lk450-ub lcd has no sound or picture. red power light flashes then turns blue. power supply board looks okay it has no burnt capacitors.
Samsung s5053, will not turn on.
clicking noise inside, screen comes on and goes off. No picture.
checked voltage on pin 10 get 5 volts connector cn804-1.
research on internet seems to point at main power board, but some think its standby power board.
I was going to replace the PSPF501A01A board. But don't want to spend $100.00 on wrong board.
Any advice will be helpful.
Ken, did you ever find out what was wrong with your set and have it repaired?I have the same "clicking" problem when first turn on the TV. First, it took about 30 secs clicking (came from the relay) then came on ok. The wait time gradua ...
Samsung HP-S5053 Television
Sony LCD TV / PC Monitor MFM-HT75W manufactured 01/2006 On power up screen displays picture for 2/3 seconds then goes black/blank with power light on and sound transmission OK. Same if connected to PC or DVD player. Is problem backlight (CCFL ?) or invertor or PSU or other ? Other owners experienced same but looking for a solution .Please advise with details of spare parts and availability etc Many thanks
Sony MFM-HT75W 17 in. HD-Ready LCD Television
Hi, can you help me with this TV please.
Hi, I have a Olevia 232-T11 LCD TV. First my TV wouldn't turn and the blue light just stayed on. I replaced the power supply board and now my TV turns on and the screen lights up but I get no picture or sound. The slave backlight inverter board has a blue light when you turn the TV on but goes away shortly after. The screen stays on but I have no sound or can't control the channel, volume or source button. Please help.
If the tv is not coming on but there is no picture or sound then it is a 100% guarantee that its a problem with the audio/video main board of the tv. I am sure that replacing the same would resolve the problem. Please get me the part number that is p ...
Flat Panel Televisions
I have a vizio vp422 that made a loud pop and now doesn't have any picture or sound. When you power it on the vizio display light turns from amber to white but that's it. U have to unplug it to turn it off. I have checked the fuses and they are good. The capacitors look good visually. There are a couple on the power supply board that have a black cover over the top, so I don't know about those. I changed the main board and made no difference. Someone please help!
Replace its power supply regulator board as card basis. ...
Vizio Standard (CRT) Televisions
I have an LG 50pc3d plasma tv. I recently turned on my tv and it made a pop and then I had sound and then no picture. I have read on here to look for puffed up capacitors on the power supply and I found several and replaced them, still have the same issues. I have noticed when I turn on the TV that the power lite blinks green 4 times and then stays solid... Thanks for any help
Check for defective component part at the z and y sustain board. ...
LG 50PC3D 50 in. Plasma Television
My sony big screne started shutting itself off and wouldnt come back on for several hours. Then it would power up and standby flash 7 times and after a few mins the picture would be gone but the sound stayed on then a few minutes later it completely goes off. When I push power on it blinks 11 times and does not come back on for sdeveral hours. What could be wrong?
On your tv you have cooling fans on the back side you will need to check to make sure that they are running. Lay your tv on the bed take off back cover (it's not hard) and used some air-in-the- can to remove dust from the back! If you need a fa ...
Sony Standard (CRT) Televisions
I have an acoustic solution 32 inch HD TV. model number is LCD32805HD. power supply: AC 220-240V ~ 50Hz max:180W. The problem I'm having is. When I plug it in. The blue stand by light comes on, all appears fine. But then I go to start the tv up, it sounds like its booting up, but then I start to hear a clicking sound, the screen flashes to what appears to be a snowy screen. Then goes back to stand by. This all happens in the space of aprx 10 seconds. I have done some research and it looks like t
Flat Panel Televisions