Question about Philips 51PW9303 51" Rear Projection HDTV-Ready Television

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Flyback transformer bad

Wanting to know how to replace the flyback transformer safely. Can't seem to get it out. How can I remove it and can I do it by myself. Tv has been off for 3 days so shouldn't have any current. don't want to have to higher repair man.

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Re: flyback transformer bad

Still Caps can hold charge for longer than that. Do you know for sure this is the problem. If not then, you maybe shooting yourself in the foot sort of speak. You would need a desoldering tool, iron or gun. Have you check the cost, because most flyback for projection cost maybe over 100. So it maybe easier and safer to call PTS 18008447871 and give them the tv model and what the problem is.

Posted on Sep 14, 2007

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Have a Hitachi 53sdx89BA Rear Projection TV. Turn on TV and red power light illuminates. No picture, but have sound. Check PC board in back and red led is flashing and green leds are lit. It was working...

Discharged Flyback Transformer. Removed main pc board from bottom of TV and flipped over, no apparent damaged components or blown board traces were found. Noticed a lot of flux in various areas on the board that seemed unusual (maybe TV was worked on before as I bought a showroom demo at Circuit City). Used a plastic screwdriver to remove all flux between connections on ICs, Transformers, Flyback Transformer, and various other components. Cleaned all debris, dust and crud accumulation (TV is over 10 years old and there was alot around the Flyback Transformer) from both sides of board using a lightweight paint brush.
Used a magnifying glass to check all solder joints for possible cold solders and found none. Did the same for Power Supply Board. Checked various ICs and Power Transistors for opens or shorts (in machine) and they seemed fine. Reinstalled boards, said a few Hail Mary's and fired it up.

The protector Led no longer flashed under power and lo and behold I got picture and sound!

I cleaned the lens on the projectors (again 10 years of dust accumulation) did a magic focus adjustment and it works fine!

After reading other fixes, I fully expected it to die after 10 minutes so I left it on all day and against all odds it still works.

What was the fix......Dirt buildup on and around Flyback and other components,,,,,,Flux conducting electricity between contacts on Flyback and other components.....or oxidation on connectors between Power Supply and Main Board.....I don't know.... all I know is that for the moment I saved around $ 300 - 400 in repair bills by doing it myself.

Feb 01, 2010 | Hitachi 53SDX89B 53" Rear Projection...

1 Answer

RCA D52W15 No Longer Powers On

The flyback transformer and cold solders (especially in the flyback area) are the main source of problems with this chassis. As you pointed out the power supply caps should also be checked. I would start by visually checking for bad solders, for this it's best to remove the board from the plastic housing so you have no obstical in your view.

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RCA 52in. Projection TV D52W19B does anyone

Hello butmommy03,

This is the procedure but first I must warn you. You are dealing with one of the most dangerous parts of a TV The High Voltage anode or the CRT and the flyback transformer. That being said this is what you have to do:

1) unplug the TV from the wall or power strip.

2) take the back of the TV, and find the High voltage trippler and using a screwdriver grounded by a clip-lead to the grounding strip touch it to the exposed metal of the input to the High Voltage trippler.

3) using a soldering iron de-solder and remove the wire from the HV trippler.

4) Once this is done, angle the chassis to expose the bottom of the Deflection board, if this is no possible you will have to remove the deflection board to get a look at the bottom, once this is done and you can view the bottom of the board using a soldering iron and a de-soldering pump you can remove the solder from around the pins of the flyback transformer about 10 pins in all. Then remove the screws that hold the flyback in place. this is the procedure you requested,

However again I must ask you not to do this yourself and to get a qualified TV technician to troubleshoot this TV for you.

Thank you,


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1 Answer

Flyback transformer and horizontal output transistor change out

There is a little loose sleeve at the transformer. It can be pulled out, but it is best to squeeze the sides through hole on each side of the terminal to remove the sleeve. The wire just comes out with a small pull afetr the sleeve is removed. Good luck.

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I am replacing the flyback transformer

You should post here pictures of old transformer and point out what wire you want to remove, then I can give you an idea what to do as flyback transformer is not in front of me.

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1 Answer

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Its either the flyback or a regulator. But i would need the model number of your set in order to know for sure. Please reply to this same post with your model number.

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yes its dangerous because of its high voltage, but you can remove it yourself, just unplugged the power cord, then get a screw driver insert it to the high caps connected in the flyback its color red push the pin inside and pull it off be sure not to touch the metal part of your screw driver, then thats the time to unsolder it...

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RCA D52W19 Flyback Transformer Replacment guide

The picture tube can hold a charge.with a jumper connect one end to the ground wire around the picture tub. attach the other end to a screw driver and push it under the red cap on the picture tub. that will discharge it.. Remove the transformer from the board by disordering all connections. Insert the new fly and solder. from the old transformer follow the two leads on the side to the screen board at the picture tube. one at a time connect the new transformer leads to the socket and board. part number for the FBT 259296 $50.39 from www.the parts store

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remove solder from all pins and squeeze clips to remove...

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Chassis removal

all the projection tv are made with removal chassis in mind becouse thats the only parts you carry to the shop remove the upper ruber tap and gentely but firme pull the carefull tvs have verry dangerous sites, specialy in that area..good luck

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