I am having the same problem when I turn the tv on I get no picture or sound, you can hear it turn on but then I get the 4 flashing standby lights at the bottom. I have tried unplugging the power to rest it but still nothing. Please someone help me.
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Re: No picture No sound
I agree with techman, but I call it the start-up supply, which gives the Switch Mode Power Supply Intergrated Circuit, a supply (V+).
This supply is about 10 to 30 Volts and supplies a few milliamps of current to the integrated circuit (SMPS) which starts giving out pulses.
The pulses switch on and off the Line Output Transistor, or a Power Transistor which energises a transformer.
The transformer provides all the voltages required to work the rest of the circuits. One if these voltages takes over from the-start up supply.
The failure is usually the Power Transistor, or the Transformer (line output).
Replacing the Transistor will usually bring the set to life, but it may fail again due to the fault which caused the transistor to blow.
The only solution is to get a service engineer who will check the components before switching on again.
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Re: No picture No sound
This is an indication that the sweep power supply did not give the turn on pulse from the SMPS, thats the main power supply. If you know how to use a multimeter I will send you the instructions to troubleshoot this supply. Or you may need to trouble shoot the sweep supply as well. If you have no electronic or solid state repair experience, Please stay safe and call in a trained tech to assist you with this repair. Good Luck
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U turn tv on hear any squiling,grinding or motor noises?Picture show up before it shut down picture have flashes of black&white within the picture?Yes,to all of these,this tv have a colors wheel and it dead,require the colors wheel replacing.No,none of these problems.The tv projection lamp,if in this tv like a 1 1/2 or 2 years,tv ben on an watches like 4 or 5 hours a day?The "LAMP" LED light indication lite up or flahes,the projection lamp life is over.Require a new projection lamp.
Hello there, I'm having a major problem with my TV, I have called all
of the local TV repair shops and they all are the same, they want money
money money before they will even speak with me about the problem I'm
having. This is the only TV in my entire household for a family of 4
and we desperately need the TV in working condition for our kids. I
don't want to have to put out $500 for another set if I don't
absolutely have to.
About 3-4 months ago the TV when turned on, the picture would slowly
come into view and be very scrambled and before the picture would come
into complete view the TV power would shut itself off, but the power
light would remain on. You can hear the "Click" noise when it would
shut itself off.
2-3 seconds after it 'shut itself off' then the TV would make the
"Click" noise (The same noise it makes when you first turn it on), it
would make the "Click" noise over and over and over again but nothing
would happen. So i would turn it off and on again and change the
channel rapidly until after 2-3 minutes it would come into view and
So we decided to leave the TV on 24 hours a day. Then today we awoke
and it was off and making the "clicking" noise over and over and over
again but with no picture or sound. Now it wont even turn on/off it
just sits there and goes "Click, Click Click Click" and doesn't do
I described the problem as best as I can. Here is the TV information and specifications...
Philips 27 Inch Tube TV
Model Number... 27PT54 3S37A
Serial Number... 78438404
Date Code March 2003
Now that I typed the model number there are threads everywhere people
saying the same issue exactly as me, I will read them but please
someone tell me is there anything I can do...
Can anyone explain exactly what is wrong with the Tv and why it's doing this?
Also, what should I expect to pay to repair it?
Any information or help would be appreciated very much.
Thanks in advance,
Just got off the phone with certified Philips shop...they said they
will repair it for $100-$130 with a $25 down payment just drop it off
and he will call me when its done. Does this sound like its worth it or
a rip off?
There are many possibilities and most of them have to do with the "D" board, Sony p/n# A1346948A but testing is something generally beyond the scope of those less than technically equipped. You could order the whole board and put it in but that might be more than the simple fix you wanted or you wouldn't be here. So my best advice is to take it in to a qualified shop and have them estimate and repair it.. I see 3 or 4 of these sets in my shop a month, Sony XBR, and they're still very much worth the repair..
if your could hear a slight ticking (tick-tick tick) or whining then some electronic component might have been damaged (shorted). if you have no experience repairing electronic equipments then i suggest you to send your TV to a service station!
your problem is in sound section only.
1 signal line for sound coming from vif section
2 supply to audio section.
3 component fail in audio output section.
4 loose contact in audio section
5 speakr & its connecting wire.