Question about Pioneer SD-533HD5 53" Rear Projection HDTV

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3 amp fuse blows every time

The three amp fuse on the main power board blows everytime I plug in the tv. any ideas?

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First if you have a can of air or air compressor blow out back if using an air compressor dont blow directly on stuff up close and dont let to much air out at once then if you have another 3 amp try it if not around the prongs wrap aluminum foil around them to were they all connectput it back in then it should work

Posted on Feb 06, 2008

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I have a projectionTV Sony mod. KP48V75. During a storm the safety power fuse blew. It was 125V 6.5A. I replaced it with 125V 6A and so far everytime I plug the TV on it blows the fuse. I have been through...


Most likely the storm did damage to the power supply board (the G board in a Sony) which is part number A-1316-388-A for your TV. However the board is no longer available..It most likely has a bad regulator and possibly rectifiers on that board that are shorted. Complete board replacement would be the best solution.

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The power safety fuse was blown. I replaced it but everytime I plug the TV, it blows the fuse. It is a Sony projection HDTV


When fuse blows again and again that means power supply is bad and needs to be replaced.
Let me know exact model of your Sony TV to provide you power supply board part number info.


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WD-62525 dead after power outage...no lights no blinking, nothing. I got the power chassis out and checked the incoming power and is reading 120V. The fuse immediately after is intact. I Checked cont on...


Alot of times on these Mitsubishi tv, there are about 4 boards that have cappacitors that blow. If your lucky, it may just be the capacitors on the power board.

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I have a wd 62725 we had a power failure last night and now i have no lamps no fans nothing tv is dead i have reset several times tv was pluged into a surge protector and all of the other items are still...


Yes, apparently fuse is blow off. You need to take off back cover of TV and follow AC cord to reach on power supply board.
Get service manual from Manual Zone for small fee, if you need detailed technical info and schematics of TV.

Apr 15, 2009 | Mitsubishi WD-52525 52" Rear Projection...

3 Answers

Toshiba 57H81 Flashing Red Power Light, Blown Fused F850+F852


Solved by resoldering some solder joints!!!!!!!
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Toshiba Model 57H81 Rear Projection TV - Purchased 11-09-2001

Problem: Toshiba 57H81 Flashing Red Power Light, No Picture/Sound, Blown Fuses F850 + F852

Symptoms January, 2009:

  • Upon turning on set I got flashing red power light and nothing else.
  • Removing plug for one minute and plugging in results in:
    • Audible click, steady red power light for 2 seconds then slow flashing red light
    • Pushing power button results in steady red for about 2 seconds then slow flashing red light, no other set activity
  • Removing power cord for several hours and plugging back in made no change
    • Audible click, steady red for about 2 seconds then slow flashing red light
  • Possible related note: Over past several months occasionally the entire screen would flicker momentarily and at other times be problem free for weeks.
  • Fuses F850 and F852 found blown

Repairs Made:
  • PD0074 DEF/CON Power Board
    • There are two main power supply capacitors in this set. They are C-809 and C-810. One their negative lead on the printed circuit board re-soldered leads and nearby contacts. I’m told that because the factory left out a printed circuit board eyelet, the connection will come loose over time. When I called Toshiba customer service they said there was a known solder joint problem causing blinking red light.
    • Replaced blown fuses F850 and F852.
      • I actually installed a fuse panel on the inside of the cabinet and routed the fuse connections here instead of ordering the special fuses and replacing them on the circuit board.
      • Had to use a 5 Amp SLO-BLOW for F850. Fast blow does not survive power up. Get the red blinking light.
      • Used a fast blow 2 Amp for F852.
  • PD0073 SIGNAL Board
    • Re-soldered Q751 + Q752 STK392-110 Convergence Amps
    • Re-soldered adjacent pads that looks suspicious

Total Cost to Repair about $10
  • Twelve hours of my time over three days to research issue, disassemble set, make repairs, add fuse panel.
  • Already owned Service Manual and Circuit diagrams from a different 2004 repair.
  • Less than ten dollars at Radio Shack for fuses and fuse panel. Already had wires, etc.
  • Some solder. Already owned de-soldering tools, etc.
  • Visited both local authorized Toshiba factory service repair facilities. One said repair would have to include replacing Q751 + Q752 STK392-110 Convergence Amps with ST392-180, and realigning set for a total of $500+ and it would be more if they had to order a power board. NO THANK YOU! Other shop said $65 for site visit and $30 to make an estimate that could be applied to repair.

Jan 04, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

My sd-533hd5 keeps blowing the 5 amp 125v fuses


Yes! it sounds like a power supply problem! or the flyback in the main board needs replaced ( part is in the $70.00 range

Dec 12, 2008 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

NO POWER


if there is no indication of flashing or green light when you plug and try to turn it in this indicates no power to processor. the main fuse is more than likely blown. now this fuse is on a small board that is in front of the green board. just follow the plug in... NOW this board that the fuse is on is known as mains input board. WARNING THIS BOARD CAN AND DOES GENERATE 340 VOLTS DC. AND THIS VOLTAGE CAN BE THERE AFTER U UNPLUG IT. i repair alot of these and parts on this board short causeing fuse to blow. problems can range from plug up to standby my recomendation is if you put qa 6.2 amp fuse in and it blows again ...seek a technician

Sep 30, 2008 | RCA HD61W66 61" Projection HDTV

1 Answer

It blowing main fuse


that set will need some trouble shooting you have a short in the power supply. Could be alot of different things.

Apr 05, 2008 | RCA D52W19 52" Rear Projection Television

1 Answer

Pioneer Pro-118 won't turn on


Take off back cover. The problem power board is to the right of the board where the power plug feeds into the TV. There is a large white fuse right bend the power plug. With a meter it read ok; about 8 inches deeper into the TV on that board was the resister next to two fuses. My 4 amp 125 volt fuse did not read on my meter. After replacing, it worked fine. Check all three fuses while you're in there.

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