Question about Sony KP-53HS30 53" Rear Projection HDTV-Ready Television

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Won't power up

I have a problem with my tv, when you hit the power button it just clicks,and won't turn on, I sent in the main boards and had them rebuilt, and it still does the same thing the standby light flashes 6 times, any help at all would be greatly appreciated!!!

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Re: won't power up

Well this sounds like your power supply check fuses and horizontal transistor check to see if all connections are good get back to me

Posted on Nov 02, 2007

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I was watching tv and i heard a loud click then the screen turned black. the button in the front to turn on the tv kept blinking. I tried to turn it back on and it seemed as if it would then another click...


The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board.

I do not think it needs replacement, rather some defective capacitors are causing this issue.
Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like ""(look for electrolytic capacitors).
After replacing these capacitor(capacitors) most likely the normal operation will be restored.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Good luck.

Mar 18, 2011 | JVC HD-61FH97 61" Television

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I have a 1992 hitachi rear projection model #46ux12bc and the TV clicks when i hit the power button but it won`t turn on.I checked the power supply and cord.

Replace both of your STK ICs STK392-110s use 120s or 150s
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Can't turn on

When you turn the MAIN off you are killing all power to the set---Some advice---If you Google the model number of this set with the word problem after it you should find what I have seen a lot in these sets: they develop bad solder connections on the power supply printed circuit board---usually the board is about 18 inches tall and 12 inches wide--A number of sites online offer to have you ship them the board and they will resolder it for you.
I have repaired about 12 of these with this problem in the last 2 years---The board has to be removed(there are quite a few plugs that need to be labeled and removed and lots of screws that secure the board in place.)

Maybe not a job for a do it yourself person but the soldering (if it is your problem) will take about 45 minutes(including removal and installing board back).

Like most modern sets this set uses lead free solder and it is soldered(the boards) in a wave or one step process---over time from heat and expansion some connections may crack or even break loose----I would look at the POWER SUPPLY board(follow the power cord as it goes right to it)

If you have any questions or need help please contact me here.

I do this here for free so if this information has helped you take a minute and give me a vote here.


Sep 06, 2009 | Pioneer SD-533HD5 53" Rear Projection HDTV

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Polaroid tlx-3210b tv will not turn on the red light comes on and the blue light comes on when you hit the power button but still no picture or sound have to unplug tv to turn off blue light. contacted...

Symptom shows that Mani Board is bad in your TLX-03210B Polaroid TV and need to be replaced. I do not see problem of capacitors in power supply board. Problem seems in system control section of TV that is located on main board.
Click Shop Jimmy as it is best source to obtain boards of LCD TVs.
Please call Shop Jimmy for main board availability as currently its out of stock.

Hit "add a comment" button for further query / info.

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1 Answer

Does not power on

ok on pioneer most of the time it is because of bad connections all over the main power supply board solder these and see what happens like i said most of the times it starts with bad connections.

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