Question about Hitachi 55FX48B 55" Rear Projection Television

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Will not power on......what could be the problem on the board?...i am good at soldering things...will replace if I new what to replace

Won't power on ......electrical strorm the other day

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Re: Will not power on......what could be the problem on...

If have already unplugged and waited for atleast 15min. and still no success. Then only if you are Electronicly inclined. Check to see if you get dead completely or you get an indicator light momentarly. Which these are two different symptoms. first dead no indicator. check R931,E994,Q777. Then if indicator light comes on and goes off, check E994 which is fuse opening, C707-1000pf 2kv cap, also check D915, I601, IK04, and 05

Posted on Aug 16, 2007

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My 73'' mitsubishi model #wd-73738. Is flickering.

That's a clear indication that you have a bad power supply in your TV.
If you know how to DiY...I suggest you open your TV. Locate the power supply section, it is where the end of the power plug is connected. Replace all blown or bulge or leaked capacitors with same value. That will fix your TV problem.
The hardest part is to disassembling your TV cover, cause you will need to pry off the snap in lock at the edge of your TV.

Power supply board should look like this. Examine the capacitors in the board

After replacing blown should work again.

Things you will need.
1. A plastic flat end screw or any object with flat fry off the cover
2. Soldering iron.
3. Soldering lead
4. Soldering pump.
5. Flat and Philip Screw
6. Replacement capacitors (of same value with the blown one) that you can buy to any electronics store.

Or try replace light engine..if the above solution won't work..

Feb 23, 2012 | Mitsubishi Projection Televisions

1 Answer

My pioneer pro-151 fd do not power on

known problems with this brand is: multiple solder joints failures, plus near empty electrolytic capacitors. Those, usually won't "bloat", compare to modern panel TVs. Instead, you may see a little grease puddle under capacitor, which is escaped electrolyte. Or, nothing! First move is to re-solder ALL the power PCB connections, then put board back, connect all the plugs and wires. Try. It might work in many cases. If not, better to call for in-home repair! If it takes more, than just a soldering, that's a pro job.
Good luck,

Jan 18, 2012 | Pioneer Projection Televisions

1 Answer

I have a mitsubish tv model #52525 the time light is blinking and the tv won't come on


Your power supply board is dead, do you know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like, to buy a whole refurbish power supply board for the replacement.

I hope this will help to solve the problem.....

Jul 07, 2011 | Projection Televisions

1 Answer

The red light keeps blinking and tv won't turn the fan won't come on either


power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like, to buy a whole refurbish power supply board for the replacement.

I hope this will help out in solving the problem....

Jun 19, 2011 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Was told power unit had to be replaced how much will that cost?

If you are handy with a soldering iron you can do the repair yourself. 90% of power problems stem from cracked solder joints on power board & convergence board. All you need to do is heat up the existing solder and add a little fresh solder to the joint. I had a power problem on my Toshiba 50". Service guy told me a new board would be $165 + $150 for labor. I wasn't paying that so before trashing it I grabbed my soldering iron and resoldered every joint on the power board and convergence board. Bingo! No more power problem and it only cost me $25 in supplies.

Oct 07, 2010 | Toshiba 61HX70 61" Rear Projection...

1 Answer

WS-55411 What seven capacitors need replacing? 2-3 code Problem

U check the power supply board,check all cap,and replaced it?Ur tv make buzzing noise when u turn on power?Ur flyback is dead.

Mar 17, 2010 | Mitsubishi WS-55411 55" Rear Projection...

1 Answer

Turns off and on when wants too

You should always include the model number of devices causing you trouble since it may then be seen by techs who have experience with a specific series problem.
If both audio and video fail together, the main power supply is probably at fault.
Unplug the set from AC for a least a couple of hours to ensure no dangerous voltages are still present. Remove the lower panel from the set and look for a separate board that is related to the incoming AC line. The power supply board will have larger components on it such as blocks that are transformers and chokes as well as larger cylindrical parts mounted at 90 degrees to the board. These will be capacitors.
Because of the intermittent nature of the failure, it may be caused by a failed solder joint on the board. Remove the board and inspect the side with circuit traces on it and possibly using a magnifier, look at the solder joints where the leads from parts are soldered in place.
If you find any signs of heating (discolored epoxy) or joints that appear crystallized or leads separated from the solder pads of the traces, you may have found the problem.
Use only a soldering iron intended for electronic use and resin core solder to repair it and don't spend too much time in one place or the trace can be damaged. I also advise using either a solder vacuum tool or solder 'wick' to remove damaged or dull--appearing solder replacing it with fresh solder.
If that doesn't cure the problem, there is a chance that a semiconductor component is internally defective and if a replacement board is still available it might be better to swap out the power supply board.
If the manufacturer can no longer supply a new board, you may be able to find one at the link below-
Jimmy's Parts

Mar 11, 2010 | RCA Projection Televisions

1 Answer

61uwx10ba. no power to any boards but power supply.

have you reched around the new soldering area carefully, check for solder spills or drops in the printed circuit, also another thing to look for is some of those replacement stk do not hold their weight, you might want to take them out and try the old ones to see if you recover tv power.

Jan 15, 2010 | Hitachi 61UWX10B 61" Rear Projection...

2 Answers

Please help

the chances are you may have what is called a bad hypermodule. it is a signal board that controls signal processing. does the picture apear"wavy" then clears up. The way to repair this is to repair this board is to replace 11 microcaps. NOT EASY technicians have truble with this repair... twezzers and manifying glasses. ideally the best thing to do is to replace this board... but they are very rare and difficult to find. so if you can find a good tech that can solder microcaps or if you can find the board those will be the options

Aug 01, 2008 | Toshiba 57H82 57" Rear Projection...

3 Answers

Sony KP-51Ws520

9 blinks means, "Zero Crossing Detector" and the probable cause locations listed are "D6166 or D6114 is open (G board)". I had the exact same problem so I just ordered a new G board and swapped it with the old one and now everything works fine! You could order a new one at this site: The Sony board number is A1054157A. Replacing the G board is rather simple; all you got to do is pull out the back cover of the TV and the G board is the first board on your very left. After that unplug the four connectors and replace it with the new one. Here is a picture of the G board inside your TV: Hope this helped!

Apr 24, 2008 | Sony KP-51WS520 51" Rear Projection...

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