Question about Panasonic PT-51HX41 51" Rear Projection Television

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It sound's like I am having a over surge problem

My television is turning off after about 2 second's and I can't turn it back on unless I unplug it, then it turn's back off again within a couple of second's. Is there anything I can do to fix it myself, I can't really afford a repair call.

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  • Andrea Kerby Jun 12, 2007

    Thank You for the info. It was very helpful.

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Premtech.. I just replaced my two ICs with these chips STK392-110 Original Sanyo IC TV 38v 3a 15Khz max. It worked great for one day however now when I turn TV on.. I have the same problem.. Are these IC's to low in voltage?

Posted on Oct 08, 2007

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Don't have a repair come to you take the TV to them... And no, it's not something you can repair yourself. The symptoms you're describing are a common problem with the PT51HX41 in that one of the convergence amps has failed and most likely opened or dramatically changed one of the feed resistors in that circuit. Your amps are IC7001 and IC7002 both STK392-110 and I personally recommend using an STK392-150's for greater reliability. The feed resistors in that circuit are a 2.2ohm/2w and most likely you'll find one or more heat stressed... When researching for a shop ask them if they have the STK392-150's on-hand and if they have any problem subbing to that for greater reliability. Most shops will have no problem. Sorry if this wasn't what you wanted to hear - please don't kill the messenger. As a certified tech I most hate having to tell people bad news in a solution. Good Luck Bill

Posted on Jun 12, 2007

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Posted on Jan 02, 2017

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Sony Bravia built in DVD player wont accept the discs - why is this?


Performing a power reset
1. Turn off the television.
2. Unplug the television power cord from the electrical outlet.
3. Let the television remain without power for 60 seconds.
4. Plug the power cord back into the electrical outlet.
NOTE: If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.
5. Turn on the television.
How to establish an HDMI connection between a TV and other device.
Follow the steps below if the HDMI® connection between your TV and other device is not working:
1. Make sure both the TV and other device are turned on.
2. While turned on, unplug the power cords for the TV and device from the electrical outlet.
3. Disconnect the HDMI cables from the TV and other product.
4. Wait 60 seconds.
5. While the HDMI cables are disconnected, plug the power cords back into the electrical outlet.
6. Turn on the TV.
7. Re-connect the HDMI cables.
8. Turn on the HDMI-connected product.

The TV should now detect the HDMI signal from the connected device and operate normally. If there is still a problem, disconnect the HDMI cable from both products and then reconnect it in the opposite direction. In some situations this has been reported to resolve connection issues.
How to reset a TV to factory settings: https://us.en.kb.sony.com/app/answers/detail/a_id/61396
Hopefully this post helps you! If does, please mark it "accept as solution"

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This sounds like a main power board issue. After you unplug it, it will work? Are you planning on trying to service it or having it serviced?
Thanks,
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Call 877-332-7867 and allow the customer service representative to create a case file for you. Next ask to be walked through an INIT/factory reset. You will need two people unless your tv is plugged into a surge protector that can be switched on and off with your foot because the first step will be to unplug the television or switch off the surge protector it is connected to. The next step is to hold down two of the buttons on the panel while plugging the unit back in/switching tbe surge protector back on with your foot.

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I had the same problem with a old Sony TV.

To find out if the problem is temporary
  1. Turn off the television.

IMPORTANT: For a projection television that uses an internal lamp, wait 5 minutes after turning off the television to allow the lamp to cool before continuing with the following steps.

2. Unplug the television power cord from the electrical outlet.

3. Let the television remain without power for 60 seconds.

4. Plug the power cord back into the electrical outlet.



NOTE: If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.

5. Turn on the television.

If the light is still flashing the tv has stop working and you will need to buy a new one.






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TV turns on for 2 seconds then shuts off. Sleep/timer blinks. Won't go back on unless unplugged and plugged back in

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1 Answer

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I suggest you unplug the set for about 15 minutes and then plug it in and try again. Sounds like you may have had a power surge/bump in the middle of the night. Althoguh you are using a surge protector, doesn'r mean the devise hooked to it can't lock up during a power surge.( Surge Protectors are an insurance policy only, not a garrentee ). If unplugging the set and waiting doesn't fix it, it will need to have the power supply section of the board repaired. Good Luck
Ed
NC Electronic
Mills, Wyoming

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Sounds like you need a new power supply board

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The STANDBY light is flashing on the television and there is no picture or sound. Solution
sp.gif sp.gif The STANDBY light will flash if an issue is detected within the television. This can sometimes be resolved by simply following the steps below to reset the television.
  1. Turn off the television. IMPORTANT: For a projection television that uses an internal lamp, wait 5 minutes after turning off the television to allow the lamp to cool before continuing with the following steps.
  2. Unplug the television power cord from the electrical outlet.
  3. Let the television remain without power for 60 seconds.
  4. Plug the power cord back into the electrical outlet. NOTE: If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.
  5. Turn on the television.
If the issue is still unresolved after following all of the troubleshooting steps, service may be required. Please note the number of times the STANDBY light flashes and relay that information to the service center.

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It sounds like your focus/screen block, the flyback transformer, or maybe a CRT anode lead is leaking high voltage. This could be a serious problem, or could be a simple one. You should not attempt this repair unless you know all of the high voltage safety issues involved with this TV set. Good Luck

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