Question about Toshiba 3387DB TV

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Toshiba 3387DB Television

Horizontal Hum bars drifting vertically through the picture. Worse on the UHF input much less apparent on the SCART input

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It is due to 60Hz HUM IN POWER SUPPLY. please check for input supply. also check for mains filter capacitor in tv. also check for one diode open in rectifier ckt.

Posted on Oct 06, 2007

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My toshiba 42h83 tv has sound but no picture


of course check different inputs etc to make sure something did not get disconnected.

This rear projection set uses 3 picture tubes and the set will protect them if there is a problem in the vertical or horizontal sweep circuits that might burn the screens or the damage the tubes.

No simple answer as a lot of different parts are possible for this problem.

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1 Answer

I have a Toshiba 3387DB TV and am trying to connect it to my laptop. Tried to use DVI (out of laptop) to RGB phonos cable. Then through a scart adapter into the Scart 1 socket at back of TV. Manual says...


You need to convert the component sync signals into a composite sync compatible with SCART. The red, green and blue signals can be connected through as-is.

Mar 21, 2011 | Toshiba 3387DB TV

1 Answer

What cable do I need to set up the HD and where do I plug it in? All the ones I lookes at have a rectangular end and I don't see one on the like that on the TV. I am using the 2 scart sockets for cable...


Any of these will work.

ANTENNA IN: UHF/VHF 75 ohm Din type (If in HD Broadcast)
EXT 1: SCART (AV Input/Output, RGB Input, TV Output)
EXT 2: SCART (AV Input/Output, Y/C Input, AV Link)
EXT 3: S-VIDEO (Y/C Input), RCA pin (AV Input)
EXT 4: RCA pin (Vomponant Input)
PC INPUT: D-sub 15 pin (ANALOG RGB), 3.5mm Javk (Audio Input)

Service Manual can be found here: http://www.givemefile.net/smanuals/lcd_tvs/sharp/file/45437.html

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1 Answer

Distored picture


Well, if your horizontal is off frequency and you have diagonal lines then there's no need to look at the Horiz Output Transistor or the Vertical section. You will have to use your scope to check the oscillator freq. and go from there.

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2 Answers

Screen shows several horizontal and vertical lines.


this can be in your video cable or LCD Connector issue. but most problem is in the flex cable of LCD. some other cases cannot be fix and replace new LCD Screen.

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1 Answer

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Does it look like a 3D image?
Would you be able to post a picture of the TV with the mention lines?

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Video input


Needs Hyper board repair = replace bad caps
PCB not available to buy outright........................T.

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1 Answer

Picture on 42HDX82 vertically stretchs after about 10 mins


Sounds like a bad cap, spray some freeze around till you can duplicate the problem.

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1 Answer

Horrizontal fluttering when warmed up.


1. HORIZONTAL PULLING AND TEARING, MAY ALSO HAVE VERTICAL ROLLING OR VERTICAL BLANKING BAR LOCKING IN THE MIDDLE OF THE PICTURE. CHECK C2C52 10 UFD @ 50 V OFF THE BASE OF Q2C51 ON THE SIGNAL PCB. 2. CHECK C2P05 100 UFD 16 V OFF PIN 3 OF IC2P01 (9-VOLT REGULATOR) ON THE SIGNAL PCB

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