Question about Toshiba 50H72 50" Rear Projection Television

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On cold start,picture flashes double exposure

When the set is tuned on cold,picture flashes kind of like a double exposure for about 10 minutes then its fine untill turned off ,then repeates when turned on again,could this be a bad crt lamp.

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Re: on cold start,picture flashes double exposure

I put it in the shop and had it fixed,replaced 11 caps in the hyperboard.50 bucks in parts,250 in new now

Posted on Jan 14, 2008

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Re: on cold start,picture flashes double exposure

CRT's ok.......Convergence issue....replace STK IC's
Part # STK392-110 upgrade to STK394-160E # CZ 01341.......T.

Posted on Dec 14, 2007

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I have the Nokia Lumia 521, and it works fine, except a couple weeks ago it doubled all of my pictures and if I delete one of the doubles both will disappear. Now whenever I take a screenshot it doubles it...

Two suggestions:
1. Do a hard reset.
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TV picture goes out after 10 minutes of viewing with popping sound

It can be a couple things. Something bad on the power board. Or the vertical output circuit. How long ago did you purchase the television. Your best course of action is to have it serviced.
If you need any information or other assistance let me know.

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Zenith z56dc1d dlp tv picture works for about 1 minute then starts shaking and tv shuts off

You may want to get it in a rather warm room and or remove rear cover and use a hairdryer to warm everything up inside the Cabinet--with rear cover off look to see if the fans are dirty etc and if they all come on, if a DLP especially look at the lamp itself and the fan that cools it.

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Picture looks concave ,mostly yellow,and double vision on words

Remove unshielded speakers or other metallic objects near the TV. It can cause picture distortion.
  1. Tune the TV to channel or cable program.
  2. Run the TV for at least 30 minutes.
  3. Press FLASH FOCUS on the front panel of the TV.
  4. A cross pattern appears and FLASH FOCUS begins to
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You cannot perform any other functions until FLASH FOCUS has
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Oct 30, 2009 | Sony KP-57HW40 57" Rear Projection...

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My sony KP51WS510 Too blue or red, double exposure

This type of fault is harder to locate since the I cannot see the picture my self.
It could be a convergence problem or G2 problem. Either way U should take to a service center.
I don't think this is just a do it ur self kind of fault
Sorry. I can't be of any more help

Nov 15, 2008 | Sony KP-51WS510 51" Rear Projection...

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Picture/sound goes out after 10 minutes of TV use

Rear projection hdtv, most likely damaged tubes. Don't repair this by your self get a tv repair man to do it before you injure your self.

Jun 24, 2008 | Pioneer SD-582HD5 58" Rear Projection...

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Dual Picture

Your covergence power supply needs new ICs. Let me know the chassis number off the rear of your set and I will post the correct IC that you need along with a link where you can get a replacement with free installation instructions and free tech support

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Picture on my TV starts to flash after a few minutes of use

This problem is common in Samsung projection TVs. The DMD board is going bad.

Mar 21, 2008 | Samsung HL-R6167W 61" HDTV

1 Answer


This may not be the problem, but the following service bulletin may be of interest:

Last Update: 1/25/2006
Document Reference/Event ID: E30094243
Subject: Picture might have a slight Greenish tint.

Under certain conditions (especially cold/ first power ON), white areas of the picture may take on a slightly greenish tint after power on until internal temperature stabilization is achieved. Typically, this disappears after approximately 10 minutes operating time, however, in certain cases (i.e. colder conditions) the set will continue to fine tune the picture longer that 10 minutes. This is in order to create optimum picture performance under nominal viewing conditions.

This is not a defect but a characteristic of the LCD panels. Be assured that the time it takes to disappear will neither lengthen nor reduce over time.

If the condition improves but reduction in effect is desired, there are customer adjustments that can minimize this condition. Please demonstrate these adjustments with the customer, to determine if these settings are acceptable. (User adjustments are supplied in Solution A)

In cases where no Uniformity improvement is achieved (after 30 minutes power on time) proceed to Solution B; Optical block

Please be aware that all Optical Blocks exhibit warm-up behavior.
Replacing an Optical Block will not eliminate or significantly reduce the time below 10 minutes.


Internal temperature stabilization needed.

Solution A)

You may reduce this effect by changing some user settings as follows:

(1) Change the Color Temperature setting to Cool - (refer to page 81-82 of the instruction manual). If further reduction is desired proceed to step 2.

(2) Slightly Reduce the Green bias (only available in PRO Picture mode under Advanced video settings), then select white balance Adjustment - (refer to page 81 of the instruction manual). Example:
a. Menu, Video, Picture Mode, Pro Mode
b. Menu, Video, Advance Video, White Balance, G-Bias (Reduce several steps)

Solution B)

Replace Optical block after gaining approval from Sony Tech. line.

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