Question about Proscan Televison & Video

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I replaced the power supply unit on my 50" ProScan flat screen and now it wont even turn on just a clicking sound when you hit the power button.

My tv made loud pop and smelled like it was burning and I lost the picture. After speaking with Proscan they said it was the Power Supply unit. Bought new and installed and now it will not turn on and just makes a faint clicking noise.

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  • Proscan Master
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The replacement power supply could have been installed incorrectly or may have been defective as received.

Posted on Nov 20, 2014

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Posted on Jan 02, 2017

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SOURCE: Pioneer PDP 5030 power supply problem

Ok here's how I manage solve the problem... Having the back removed opens the contacts on the interlock switch so I guess if it powers up in this state it senses the high voltages are exposed and for safety shuts down... After this the unit will not power up and the power led flashes red continuously as described before…
After some thought it occurred to me that there may not be a problem at all, just be a simple reset function for this condition… I managed to find an easy solution to this… Just call up the hidden engineer’s service menu – On 3rd generation Pioneer Plasmas it’s as follows > Power down the screen > Hold down the “Input” and “Vol +” buttons on the front > Power the screen up and the Service menu comes up on the screen > You don't need to change anything just simply power off and from then the screen should operate as normal…It did for me so I’m well happy now!!
I hope this information will help someone else one day – Good Luck!!…Rob UK…

Posted on Jan 04, 2008

  • 62 Answers

SOURCE: power supply

Call 800-726-4405 - But the part may not be available - request an exchange through the manufacturer. By law the manufacturer must provide parts for 5 years.

Posted on Mar 29, 2008

  • 83 Answers

SOURCE: Power supply unit, TV cuts off after 20 seconds

i would recommend ebay, they usually have lots of parts for lcd tvs

Posted on Jan 25, 2009

  • 1 Answer

SOURCE: Tv makes clicking noise but won't turn on

Definitely a power supply problem.I had the same problem and changed the power supply, and TV works normally. Depending where you buy the unit, it shouls cost around $150/--, and it is very easy to replace.

Posted on May 06, 2009

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50 in proscan led tv powers on then has black screen but can see screen work with flashlight


Your backlighting is no longer working.
With a LED TV it's an array of LED's that light it, in an LCD TV it's fluorescent bulbs that do the backlighting.
There's a chance it's the power supply board that's bad, unfortunately, it could also be the backlighting itself.
You'll need an expert to look at it to make that determination.
If you don't know Electronics, don't open it up yourself! There are hazardous voltages even in flat screen TVs. The hazardous voltages are there even when the unit is unplugged!

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Good day!!!!


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..
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1 Answer

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Hi
You have to start checkin from its main ON/OFF switch itself. If the switch have any contact contact trouble, the set will not turn On, even though you hear the click sound from the switch. If switch is Ok, then you have to come to the power supply regulator board. It can be easly recogonized the powe supply regulator boad. The main supply line will go straight to it. There will be more that 5 or mor secondary voltages from it, according to Tv model. These secondary wupplies will energzed only after the power supply switching circuit work properly.
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1 Answer

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