Question about Hitachi 53FDX20B 53" Rear Projection Television

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Hitachi 53FDX20B Projection TV:Picture and sound were working and then it shut down. Powered on and off, everything reset and worked for about 20-30mins and then it happened again. Length of time between resets has shortened to about 1-2 mins. When the screen shuts down the front power light stays on. Removed back of TV, when the problem occurrs there are 4 green LED's and 1 Red that remain lit even though the screen and sound don't work. Can see 3 fuses which appear to be okay. Don't see or hear a fan. TV has 3 color tubes. Any ideas would be helpful

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  • mh5117 Jan 13, 2009

    Where is it and how do I check it? Have service manual.

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Check the transformer...it carries power to everything

Posted on Jan 13, 2009

  • Ronnie Houston Jan 13, 2009

    its at the back of the tv and looks like a coil.it is copper wrapped and has 2 wires that run to it . you need a tester to test it

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Hitachi 53fdx20b Projection Television Had a convergence problem and replaced both ICs. Resistors checked. Turned TV on and worked but still had convegence problem but not as bad. Waited 30 minutes...


If you bought the parts from sites such as www.TvRepairKits.com go back and ask for there help. It can be many things from bad soldering to blown resistors.

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If you have OSD (on screen display) but no video or sound, you may have a problem with your video input switching or video processor. Either way this could require tracing the signal with an oscilloscope and could get expensive.

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It powers up but no picture? In my experience with Hitachi TV's this has been an issue with the convergence IC's failing. You will need to have a technician replace those if needed.

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1 Answer

TV PIcture and Sound Shut Down


it would appear its shutting down in a protect mode
its possible its a convergence circuit problem or something on the deflection bd
but it most likley will require some assistance from a tech that is used to working on this type of set
if you noticed when it does come on that the colors are all off line then suspect convergence circuit trouble the the green leds tell you what source is still alive there is a chart in the cabinet that will correspond with each source voltage that can lead you to tracking it down if you know what to look for and have the tools to do so

Jan 16, 2009 | Hitachi 53FDX20B 53" Rear Projection...

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Hitachi > 53FDX20B blurry picture

I would start 1st by checking all resistors ie.
RK43 2.2 ohm - 2W
RK47 1.5 ohm - 2W
RK51 2.2 ohm - 2W
RK55 1.5 ohm - 2W
RK59 2.2 ohm - 2W
RK63 1.5 ohm - 2W
If I were you I would also replace the convergence chips. From the above thread it's clear that they are of different quality so they may last different lengths of time (B&D is a good place to buy good quality ones).
I found a free pdf service manual for 53FDX20B on a Polish web site: http://instrukcje.elektroda.net/main1750.html
other models try here: http://www.webtronix.ca/hitachi/index.htm
http://www.asm-service-manual.com/List/Hitachi%20List%20ASM.htm
Download pictures from my repair (Password: delirious).
http://www.uploading.com/files/HGGLJLXC/Delirious.zip.html

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I suggest you try hooking up a dvd or video player. If you get picture then it is just in the settings.

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Reset tv to factory settings refer to your owners manual. If still no picture attach a DVD or video player and test. If still no pic refer to tech.

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If you lost the picture and even the menu does not show up on screen, then I will bet that your high voltage has shut down or the computer has stopped the picture because it has detected a fault in the vertical circuit. In either case this is something that cannot be reset with the buttons or remote and should be handled by a qualified tech.

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