Question about Hitachi 53UDX10B 53" Rear Projection Television

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No power up

Only the red led on the center board is coming on and you can hear a click when you hit the power button on the front, led on the front will not come on. Fuses are ok.

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Re: No power up

We had same problem. Hold the power button on the remote in for about 10 - 15 seconds. It fixed ours.

Posted on Nov 07, 2007

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Re: No power up

C702 102k 2KV shorted, E994 2 amp fuse open. Replace w/102k 3KV Sony #1-161-754-00. Replace fuse w/AZ00104M or common 2 amp pico fuse. NOTE: bad cap may be covered with "glue".

Posted on Oct 03, 2007

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SOURCE: no power up, 53udx10b. rear projection

You could replace C603 first and if this doe not do it then S901 maybe bad.

Posted on Sep 24, 2007

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TV won't turn on, red light flashes on TV and hear a clicking sound in back of unit is it worth fixing?

Yes,the LED power lite on the front panel stable?Yes,mean the DM power supply board is good.LED power like blinking,mean the DM power supply board is dead.DM power supply is good,still making that clicking sound,when turn on.Mean ur Blast board is dead,that the board that help to light up the projection lamp.

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not a solution but i have a 50gx30b doing something similar, no picture no sound, 3 green leds are lit up on the main board and then one red led lit up also on main board, front panel red led stays on for about 30 -50 seconds and then it all shuts off, I then have to unplug and replug to get the same results.

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My hitachi 57f500a picture went out and sound. When you power up you can hear the clicks and the red light in front comes on solid. Out of the five leds on the power board four of them are on when...

There should be a solder in pico fuse(yellow) close to that LED labled E...something. It is most likely open. If so, check to see if there is a blue high voltage capacitor(2kv) in front of the H.output transistor. If yes, replace them both...if no try just replacing the pico fuse.

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1 Answer

No picture or sound

Remove the rear panel. With the TV on you should see a red LED near the center of the PCB. There should also be 5 green leds, 3 to the left a 2 behind. If there is no red leds, check the fuses. If there are no green leds or maybe 1 or 2, disconect PSD5. It's a connector on the left side of the power board that connects to the audio board. It's the 3rd on fro the back. It's labled. With that disconected, turn on the set and look for the green leds. If all 5 light, the power supply is OK and you have a problem beyond that. If they don't all light you have a bad power supply.

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D52W19 No pix, sound good - now green light blinks, no come on

First of all you need to find out which CRT leaked and replace it before any other repairs are done. The clear liquid is conductive and has done damage to the CRT board or boards.

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No video, no audio, red light on in front of TV

Excellent visual acuity technique!! I try to teach that procedure.

IC F6629B is probably shorted and at least one other part will

be open, possibly a zener diode,a fuse,a resistor or combo.

The service diagram would help.Be sure to use OEM first quality

parts.Let me know if you need more help.

Sep 25, 2007 | Hitachi 61SDX01B 61" Rear Projection...

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No power up, 53udx10b. rear projection

You could replace C603 first and if this doe not do it then S901 maybe bad.

Sep 24, 2007 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Power Problem

Most often this problem is caused by convergence ic's. STK392-110. Sometimes cause is vert. i.c. Also, many times it is from bad solder connections on circuit board. In any case, short of unplugging unit to reset, there's not much you can do without help from repairman.By(1)removing rear cover,(2) unscrewing 2 screws holding chassis in and(3) undo all clips and wire ties holding wiring in place. Small board on (R) side is conv. Slide entire chassis towards you. Remove 3 screws from small conv. board.Remove and mark 5 plugs and 4 black jumper plugs to free board. Look at bottom of board for rings around solder joints at pins of main amps.(STK392-110). Resolder or replace amps and reinstall board. Reconnect 4 jumpers and 5 plugs in same order. Power up unit and hit magic focus. This is most common repair.

Mar 06, 2007 | Hitachi FDX Series 43FDX10B 43" Rear...

1 Answer

TV won't come on!

Most likely, this is a problem with the convergence board. The convergence amps (STK392-040 x 2)are internally shorted. These can be replaced or the whole convergence board can be replaced. It's cheaper to replace the amps, but more convienent to replace the board (especially for the less electronically inclined!! :) Also, this could be from a leaking CRT. In CRT projection televisions, the red, green, and blue tube are filled with coolent (glycol). These 42" models are very bad about the tubes leaking (Akai and Samsung models)and are infamous for destroying the CRT driver board connected to the bottom of each tube. When this happens, the protection circuit kicks in and will not let the television start up. *PLEASE, FOR YOUR OWN SAKE, DO NOT FOLLOW THESE NEXT STEPS IF YOU HAVE NO UNDERSTANDING OF ELECTRONIC EQUIPMENT!!!! There are four screws and three snap clips that hold the bottom on. UNPLUG THE TELEVISION, remove the screws and pull bottom outward to remove. The bottoms of the three tubes should be visible. DON'T TOUCH THEM!! Now look under each tube. If one is leaking, there will be a wet spot (or sometimes a puddle!) underneath the tube. This will have to be serviced by a TV tech. Hope this helps...

Jan 26, 2007 | Akai PT4799HD Rear Projection Television

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