Question about Protron PLTV-26 26 in. HD-Ready LCD Television

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Power supply need new power supply. damaged from the storm we had.

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Your luck seems to be holding - bad. I checked and found the Protron name belong(s) or (ed) to Spectroniq and neither of the two websites are up anymore.
Also, I could probably make a zapped supply work again but you do not know what might have been damaged downstream from it and that is a good possibility; the damage may be much deeper than it appears since many of the integrated circuits used in modern equipment don't tolerate hundred (or thousand) volt spikes and without a working supply, there is little chance of diagnosing it unless a service department has a few lab-type power supplies and can simulate the failed original supply.
If you do find anyone who has stock on assemblies for this TV, you may find more than one part number on the board. If it is a number that seems to be under clear lacquer, it is likely only the bare board number. If it seems to be stamped on or has a label with a number on it, this is going to be the whole part number for the 'stuffed' board. 
I can't help you with this one but I would suggest, especially if you live in a lightning-prone area to consider installing a 'whole house' surge protector. They do cost a couple of hundred US dollars plus installation charges, but the established companies even include an insurance policy that covers $10,000-25,000 in damages. If you own your home, it's your decision and I cannot imagine any landlord would object to having you install one at your own expense.  

Posted on Sep 28, 2008

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When you get the TV fixed/replaced, buy some surge protectors or a UPS (uninteruptable power supply) to protect the rest of your gear.

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Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
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Check the fuses on the power supply board first. They usually blow when you get a power surge. You may be able to replace them and get the TV running for a few dollars. If the fuses are good then the power supply board will be the issue. The main board should not be damaged because the surge has to go through the power supply board first.

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More than likely your power supply board is damaged. The scary thing about TV's that get damaged as a result of T-storms is that multiple boards can get damaged. I would suggest taking it to get it diagnosed properly instead of the 'guessing game". That game could cost you more in the long run.

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hi usually the cause of won't power on problem due to the storm is the current fluctuation which the tendency is power supply failure. now since totally dead set what you need is to open the tv unit then look for the power supply where the power cord is connected. check obvious defective component part like blown fuse and burnt part like resistor and capacitor. just replaced with the same value and ratings to avoid damage from others component.if their is no problem with the power supply the output voltages are good the main board get damaged. good luck thanks for consulting the fixya.

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1 Answer

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The tv power supply board it is dead,u said had an electrical storm in ur area before this problems happen.Yes.Than the tv have a power surge by of the electrical storm already,the storm had a charge sent of an electrical magnatic statics to ur tv and now kills all those sensitive ICS on ur tv power suppply board already.The tv power supply board already dead that the board where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish power supply board for the replacement.

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1 Answer

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1 Answer

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Hello,

The reason your television is not powering on is simply because the storm has damaged a component in the unit of the television. The most likely component that might have been damaged is one or more of the components on the power panel.

The solution is for you to disassemble the television and assess the power supply board, you will find the bad capacitors, then replace them and the television will be in good condition once again. But be sure to have checked the main power socket to know if it is not damaged yet before proceeding with the capacitor replacement.

hope this helped.

Elect_Comp

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If the HDMI cable was the only connection, then the high voltage pulse would have had to go through one or more of the video wires in the cable, through the video board, and back out the HDMI cable shielding. What troubles me is you should see the unit come up to standby and refuse to power on. That suggests there was something else connected besides the HDMI cable or the base made a decent ground. At least the panel is worth $150 or so (it is highly unlikely it was damaged).

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