Question about Toshiba 50HX70 50" Rear Projection Television

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Have sound and no picture

I bought 50" Toshiba projection TV 4 years ago. The TV has problem "having sound but no picture" for 4 times. In the past, the issue is fixed by replacing a Fuse and the transistor D2553. Recently the TV had the problem again, I replaced the Fuse and D2553, but TV still no picture. What I need do after replace the D2553? How to fix it?

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  • Anonymous Nov 11, 2007

    the pitcher kept getting smaller and lower on the screen till it disaperd down the bottem of the screen

  • Anonymous Sep 30, 2008

    Have a Toshiba colour TV 22" which has no sound and no picture.

    You can hear the audio background noise in the speakers.

    There is no voltage on the heaters of the picture tube.

    I think the set was dropped.

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Not picture , not sound

Posted on Apr 05, 2009

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You've got a bad solder conetion,or broken foil line,s on the pcb (printed circuit board).Narrow it down by pressing in different places,or use plastic or rubber tip.If not,then you got a shorted load on this fuse and diode.do you have a schematic,whats at the end's of this circuit.D represents a not a transistor.

Posted on Jan 30, 2007

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Why is this being discussed at all under a SONY projection TV topic?

Posted on Nov 12, 2006

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Question#1: Need model # and board location #(eg. F302, Q501). D2553 sounds like a HV switching transistor (2SD2553) or Horizontal Output. If it's gone 4 times, there's something causing it. Most likely is bad connection, but without all the information, that's a wild stab. Question#2: Sounds like bad solder connection. Check bottom side of board for cracks on soldered connections. Start checking large devices (transformers, HV Switching Transistors) and devices mounted on heatsinks first. Remove all old solder and clean w/ alcohol before resoldering. Will require patience and soldering skills!!

Posted on Oct 23, 2006

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I suggest calling a new service center to repair this. Just because the transistor repaired this the first few times, does not necessarily mean that is the problem this time. It is also possible the technician used a cheap knock off part for this transistor. Tell the new service center you want them to use original parts.

Posted on Oct 08, 2006

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HI I HAVE THE SOUND BUT NO PICTURE BAT WHEN I BEND THE POWER BOARD OR PLAY WITH IT LEFT OR RIGHT THSN I GET THE PICTURE

Posted on Oct 06, 2006

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Posted on Jan 02, 2017

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